WO2012018086A1 - マグネシウムビス(ジアルキルアミド)化合物、及び当該マグネシウム化合物を用いるマグネシウム含有薄膜の製造方法 - Google Patents
マグネシウムビス(ジアルキルアミド)化合物、及び当該マグネシウム化合物を用いるマグネシウム含有薄膜の製造方法 Download PDFInfo
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- WO2012018086A1 WO2012018086A1 PCT/JP2011/067880 JP2011067880W WO2012018086A1 WO 2012018086 A1 WO2012018086 A1 WO 2012018086A1 JP 2011067880 W JP2011067880 W JP 2011067880W WO 2012018086 A1 WO2012018086 A1 WO 2012018086A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/65—Metal complexes of amines
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/02—Magnesium compounds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
Definitions
- the present invention relates to a novel magnesium bis (dialkylamide) compound and a method for producing a magnesium-containing thin film by a chemical vapor deposition method (hereinafter referred to as a CVD method) using the magnesium compound.
- magnesium compound for producing a magnesium-containing thin film various types of magnesium compounds such as alkyl magnesium, magnesium alkoxide, magnesium diketonate have been studied (for example, see Patent Documents 1 and 2). Among them, bis (cyclopentadienyl) magnesium and related compounds are mainly used.
- Patent Document 3 As raw materials for forming other metal-containing thin films such as titanium-containing thin films, zirconium-containing thin films, hafnium-containing thin films, and aluminum-containing thin films, compounds having a dialkylamide ligand have been proposed (Patent Document 3). reference).
- Magnesium bis (dialkylamide) compounds are also known, and are used, for example, as polymerization catalysts, raw materials for producing pharmaceuticals, agricultural chemicals, and the like (see, for example, Non-Patent Document 1 and Patent Document 4).
- magnesium compounds are not necessarily optimal in the production of magnesium-containing thin films, such as vapor pressure, thermal stability, and reactivity, and even the most adopted bis (cyclopentadienyl) magnesium contains magnesium. It was difficult to say that the magnesium compound was sufficient to produce a thin film. Therefore, a magnesium compound that satisfies all physical properties such as vapor pressure, thermal stability, and reactivity has been demanded.
- An object of the present invention is to provide an industrially suitable magnesium compound, more specifically, production of a magnesium-containing thin film by a CVD method, which can solve the above-mentioned problems and can produce a magnesium-containing thin film by a simple method.
- the present invention provides a magnesium compound suitable for the above.
- Another object of the present invention is to provide a method for producing a magnesium-containing thin film using the magnesium compound.
- the present invention relates to the following matters.
- R 1 represents an isopropyl group or a branched alkyl group having 4 to 6 carbon atoms
- R 2 represents a linear or branched alkyl group having 1 to 5 carbon atoms, provided that R 1 and R 2 are both isopropyl groups, R 1 and R 2 are both isobutyl groups, and R 1 is an isopropyl group and R 2 is a methyl group.
- R 3 and R 4 may be the same or different and each independently represents a linear or branched alkyl group having 1 to 10 carbon atoms.
- R 1 represents an isopropyl group or a branched alkyl group having 4 to 6 carbon atoms
- R 2 represents a linear or branched alkyl group having 1 to 5 carbon atoms, provided that R 1 and R 2 are both isopropyl groups, R 1 and R 2 are both isobutyl groups, and R 1 is an isopropyl group and R 2 is a methyl group.
- R 1 represents an isopropyl group or a branched alkyl group having 4 to 6 carbon atoms
- R 2 represents a linear or branched alkyl group having 1 to 5 carbon atoms, provided that R 1 and R 2 are both isopropyl groups, R 1 and R 2 are both isobutyl groups, and R 1 is an isopropyl group and R 2 is a methyl group.
- a novel magnesium bis (dialkylamide) compound particularly suitable for film formation by the CVD method.
- a magnesium compound Using the magnesium compound, a magnesium-containing thin film can be produced with good film forming characteristics by a CVD method.
- the magnesium bis (dialkylamide) compound of the present invention is represented by the general formula (1).
- R 1 represents an isopropyl group or a branched alkyl group having 4 to 6 carbon atoms such as t-butyl group, t-pentyl group or neopentyl group
- R 2 represents a methyl group
- R 1 and R 2 are both isopropyl groups
- R 1 and R 2 are both isobutyl groups
- R 1 is an isopropyl group and R 2 is a methyl group.
- Two R 1 may be different, two R 2 may be different, but the two R 1 are the same, since the two R 2 may be the same compound can be relatively easily synthesized, preferable.
- R 1 is a branched alkyl group having 4 to 5 carbon atoms
- R 2 is a linear or branched alkyl group having 1 to 5 carbon atoms.
- R 1 is particularly preferably a t-butyl group, a t-pentyl group, or a neopentyl group.
- R 2 is particularly preferably a methyl group, an ethyl group, an isopropyl group, a t-butyl group, a t-pentyl group, or a neopentyl group.
- R 1 is a t-butyl group, a t-pentyl group, more preferably a t-butyl group
- R 2 is a linear or branched alkyl group having 1 to 5 carbon atoms, more preferably a methyl group.
- Ethyl group isopropyl group, t-butyl group, t-pentyl group, and neopentyl group.
- magnesium bis (dialkylamide) compound of the present invention examples include compounds represented by the following formulas (6) to (20).
- the synthesis of the magnesium bis (dialkylamide) compound of the present invention can be carried out by the following method (A) or (B) (hereinafter also referred to as the reaction of the present invention).
- R 1 and R 2 are as defined above, and R 3 and R 4 represent a linear or branched alkyl group having 1 to 10 carbon atoms. R 3 and R 4 are the same. Or they may be different, and X represents a halogen atom.
- Method (A) is a method of synthesizing a magnesium bis (dialkylamide) compound by reacting a dialkylmagnesium compound with a dialkylamine.
- the dialkylmagnesium compound used in the reaction (A) of the present invention is represented by the general formula (2).
- R 3 and R 4 are methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, t-butyl group, n-pentyl group, t-pentyl group.
- R 3 and R 4 may be the same or different.
- dialkylmagnesium compound used in the reaction (A) of the present invention a commercially available product can be used, and it can be produced from metallic magnesium by a known method.
- di (n-butyl) magnesium or n-butylethylmagnesium is preferably used.
- the dialkylamine used in the reaction (A) of the present invention is represented by the general formula (3).
- R 1 and R 2 correspond to R 1 and R 2 in the formula (1), respectively, and have the same meanings as described above.
- the dialkylamine used in the reaction (A) of the present invention includes t-butylmethylamine, t-butylethylamine, t-butylisopropylamine, di-t-butylamine, t-butyl-t-pentylamine, di- -T-pentylamine and the like are preferable.
- the amount of the dialkylamine used is preferably 1.5 to 3.0 mol, more preferably 1.8 to 2.2 mol, per 1 mol of dialkylmagnesium.
- the reaction (A) of the present invention is preferably performed in an organic solvent.
- the organic solvent used is not particularly limited as long as it does not inhibit the reaction.
- ethers such as diethyl ether, tetrahydrofuran, dimethoxyethane, and dioxane
- aliphatics such as hexane, heptane, cyclohexane, methylcyclohexane, and ethylcyclohexane
- hydrocarbons include aromatic hydrocarbons such as toluene and xylene, and ethers, aliphatic hydrocarbons, and mixed solvents of ethers and aliphatic hydrocarbons are preferably used.
- the amount of the organic solvent used is preferably 1 to 100 g, more preferably 1 to 10 g, with respect to 1 g of dialkyl magnesium.
- the reaction (A) of the present invention is performed by, for example, a method of mixing a dialkylmagnesium compound, a dialkylamine and an organic solvent and reacting them with stirring.
- the reaction temperature at that time is preferably ⁇ 20 to 120 ° C., more preferably 0 to 100 ° C., and the reaction pressure is not particularly limited.
- Method (B) is a method of synthesizing a magnesium bis (dialkylamide) compound by reacting lithium dialkylamide synthesized from dialkylamine and alkyllithium with dihalogenomagnesium.
- the dialkylamine used in the reaction (B) of the present invention is represented by the general formula (3).
- R 1 and R 2 correspond to R 1 and R 2 in the formula (1), respectively, and have the same meanings as described above.
- the alkyl lithium used in the reaction (B) of the present invention is not particularly limited, and examples thereof include methyl lithium, ethyl lithium, n-butyl lithium, s-butyl lithium, t-butyl lithium, etc., preferably n- Butyl lithium is used.
- the amount of the alkyl lithium used is preferably 0.8 to 1.2 mol, more preferably 0.9 to 1.1 mol, per 1 mol of dialkylamine.
- lithium dialkylamide is synthesized from dialkylamine and alkyllithium, and this lithium dialkylamide is reacted with dihalogenomagnesium.
- the dihalogeno magnesium used in the reaction (B) of the present invention is represented by the general formula (5).
- X represents a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, preferably a chlorine atom.
- the amount of dihalogenomagnesium used is preferably 0.3 to 0.6 mol, more preferably 0.45 to 0.55 mol, per 1 mol of dialkylamine.
- the amount of lithium dialkylamide used is preferably 1.5 to 3.0 mol, more preferably 1.8 to 2.2 mol, per 1 mol of dihalogenomagnesium. .
- the reaction (B) of the present invention is preferably performed in an organic solvent.
- the organic solvent used is not particularly limited as long as it does not inhibit the reaction.
- ethers such as diethyl ether, tetrahydrofuran, dimethoxyethane, and dioxane
- aliphatics such as hexane, heptane, cyclohexane, methylcyclohexane, and ethylcyclohexane
- hydrocarbons include aromatic hydrocarbons such as toluene and xylene, and ethers, aliphatic hydrocarbons, and mixed solvents of ethers and aliphatic hydrocarbons are preferably used.
- the amount of the organic solvent used is preferably 1 to 100 g, more preferably 1 to 10 g, with respect to 1 g of dialkylamine.
- the amount of the organic solvent used in the reaction of lithium dialkylamide with dihalogenomagnesium is preferably 1 to 100 g, more preferably 1 to 10 g, relative to 1 g of dihalogenomagnesium. is there.
- a dialkylamine, an alkyllithium and an organic solvent are mixed and reacted with stirring to synthesize a lithium dialkylamide compound, and then a dihalogenomagnesium is added and further reacted with stirring. Or isolating the synthesized lithium dialkylamide, and then mixing the resulting lithium dialkylamide, dihalogenomagnesium and an organic solvent and reacting with stirring.
- the reaction temperature at that time is preferably ⁇ 20 to 100 ° C., more preferably 0 to 50 ° C., and the reaction pressure is not particularly limited.
- the lithium dialkylamide compound may be isolated once before the reaction with dihalogenomagnesium or may not be used, and the reaction solution may be used as it is, and the organic solvent may be changed, removed and / or added as appropriate. You may do it.
- the target magnesium bis (dialkylamide) compound is obtained by the reaction (A) or (B) of the present invention.
- the synthesized magnesium bis (dialkylamide) compound is isolated and purified by a known method such as extraction, filtration, concentration, distillation, sublimation, recrystallization, column chromatography, etc. after completion of the reaction.
- the magnesium bis (dialkylamide) compound which is the object of the present invention, and the dialkylmagnesium used in the production thereof are often unstable with respect to moisture and oxygen in the atmosphere. It is desirable to perform a reaction operation or a post-treatment of the reaction solution under gas conditions.
- a magnesium-containing thin film can be formed with good film forming characteristics, for example, by the CVD method.
- a method for vapor-depositing a magnesium-containing thin film on a film formation target it can be performed by a known CVD method or atomic layer deposition method (ALD method), for example, magnesium bis (dialkylamide) under normal pressure or reduced pressure.
- Compound vapor as an oxygen source eg, oxidizing gas such as oxygen or ozone; water; alcohols such as methanol, ethanol, n-propyl alcohol, isopropyl alcohol, n-butanol
- reducing gas eg, hydrogen gas or It is possible to use a method of depositing a magnesium-containing thin film by feeding onto a film-forming target heated together with ammonia gas or a mixed gas thereof. Note that these gases (including vaporized liquids) may be diluted with an inert gas or the like.
- a magnesium-containing thin film can be deposited by plasma CVD using the same raw material supply.
- magnesium bis (dialkylamide) compound for thin film formation.
- a method for vaporizing the magnesium bis (dialkylamide) compound used in the present invention for example, magnesium bis (dialkylamide) is used.
- (Amide) compound itself is not only filled into the vaporization chamber or transported and vaporized, but also magnesium bis (dialkylamide) compound in a suitable solvent (eg hexane, cyclohexane, methylcyclohexane, ethylcyclohexane, heptane, octane, etc.)
- a suitable solvent eg hexane, cyclohexane, methylcyclohexane, ethylcyclohexane, heptane, octane, etc.
- Aromatic hydrocarbons such as toluene, ethylbenzene, xylene, etc .
- ethers such as glyme, diglyme, triglyme, dioxane, tetrahydrofuran, etc.
- the deposition conditions are, for example, that the pressure in the reaction system is preferably 1 Pa to 200 kPa, more preferably 10 Pa to 110 kPa.
- the film object temperature is preferably 50 to 900 ° C., more preferably 100 to 600 ° C., and the temperature for vaporizing the magnesium bis (dialkylamide) compound is preferably 30 to 250 ° C., more preferably 60 to 200 ° C. .
- an oxygen source for example, oxidizing gas, water vapor or alcohol vapor, or a mixed gas thereof
- a reducing gas for example, hydrogen gas or ammonia gas, or these gases
- the content ratio of the mixed gas is preferably 3 to 99% by volume, more preferably 5 to 98% by volume.
- Example 1 (Method (A); synthesis of magnesium bis (t-butylmethylamide) (compound (6)))
- metal magnesium 5.5 g (0.23 mol)
- diethyl ether 20 ml
- diethyl ether 25 g (0.18 mol)
- bromobutane 25 g (0.18 mol)
- Magnesium bis (t-butylmethylamide) was a novel compound represented by the following physical property values.
- Example 2 (Method (A); synthesis of magnesium bis (t-butylethylamide) (compound (7))
- the reaction was conducted in the same manner as in Example 1 except that dialkylamine was changed to 11 g (0.11 mol) of t-butylethylamine in Example 1.
- 5.8 g of magnesium bis (t-butylethylamide) was obtained as a white solid (isolation yield: 52%).
- Magnesium bis (t-butylethylamide) was a novel compound represented by the following physical property values.
- Example 3 (Method (B); Synthesis of Magnesium Bis (t-butylisopropylamide) (Compound (8)))
- 1.8 g (16 mmol) of t-butylisopropylamine and 30 ml of heptane were added in an argon atmosphere.
- 10 ml (16 mmol) of a 1.6 mol / l n-butyllithium hexane solution was slowly dropped while maintaining the liquid temperature at around 25 ° C., and the mixture was reacted at 25 ° C. for 2 hours with stirring.
- the reaction solution was concentrated under reduced pressure to obtain 1.7 g of lithium-t-butylisopropylamide (isolation yield: 88%).
- Magnesium bis (t-butylisopropylamide) was a novel compound represented by the following physical property values.
- Example 4 Magnesium Bis (t-butyl-t-pentylamide) (Synthesis of Compound (10))
- a 100 ml flask equipped with a stirrer, a thermometer and a dropping funnel 1.1 g (8.0 mmol) of t-butyl-t-pentylamine and 15 ml of heptane were added to a 100 ml flask equipped with a stirrer, a thermometer and a dropping funnel, and the liquid temperature was 25 ° C.
- 5.0 ml (8.0 mmol) of a 1.6 mol / l n-butyllithium hexane solution was gently added dropwise and reacted at 25 ° C. for 2 hours with stirring.
- the reaction solution was concentrated under reduced pressure to obtain 1.1 g of lithium-t-butyl-t-pentylamide (isolated yield; 90%).
- Magnesium bis (t-butyl-t-pentylamide) was a novel compound represented by the following physical property values.
- Example 5 (Vapor deposition experiment; Production of magnesium-containing thin film) Using the magnesium bis (t-butylmethylamide) (compound (6)) obtained in Example 1, a vapor deposition experiment by the CVD method was performed to evaluate the film forming characteristics. The apparatus shown in FIG. 1 was used for the vapor deposition experiment. Deposition conditions and film characteristics were as follows.
- the apparatus shown in FIG. 1 has the following structure.
- the magnesium compound in the magnesium raw material container (vaporizer) 7 maintained at a constant temperature by the thermostat 8 is heated and vaporized, and leaves the raw material container 7 along with the helium gas introduced through the mass flow controller 4.
- the gas exiting the raw material container 7 is introduced into the reactor 9 together with the helium gas introduced through the mass flow controller 5.
- oxygen gas which is a reaction gas, is also introduced into the reactor 9 via the mass flow controller 6.
- the pressure in the reaction system is monitored by a pressure gauge 12 and controlled to a predetermined pressure by opening and closing a valve in front of the vacuum pump 14.
- the central part of the reactor 9 has a structure that can be heated by the heater 11.
- the magnesium compound introduced into the reactor 9 is set in the center of the reactor, and is oxidized and decomposed on the surface of the substrate 10 heated to a predetermined temperature by the heater 11 to form a magnesium-containing thin film on the substrate 10. Is done.
- the gas exiting the reactor 9 is exhausted to the atmosphere through the trap 13 and the vacuum pump 14.
- Comparative Example 1 (deposition experiment; production of magnesium-containing thin film) Using bis (cyclopentadienyl) magnesium, a vapor deposition experiment by a CVD method was performed in the same manner as in Example 5 to evaluate the film formation characteristics. Deposition conditions and film characteristics were as follows. In addition, various conditions were adjusted and the amount of raw material supply was equal to Example 5, and the vapor deposition experiment was conducted.
- magnesium bis (dialkylamide) compound of the present invention a high-quality magnesium-containing thin film (magnesium oxide film) free from impurities such as carbon atoms and nitrogen atoms can be produced. did.
- an industrially suitable and novel magnesium compound more specifically a magnesium compound suitable for producing a magnesium-containing thin film by a CVD method, which can produce a magnesium-containing thin film by a simple method. I can do it.
- a method for producing a magnesium-containing thin film on a film formation target using the magnesium compound by a CVD method can be provided.
- a magnesium bis (dialkylamide) compound is a useful compound as a raw material for producing a magnesium-containing thin film production material, a polymerization catalyst, pharmaceuticals, agricultural chemicals, and the like.
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Abstract
Description
で示されるマグネシウムビス(ジアルキルアミド)化合物。
で示されるジアルキルアミンとを反応させる工程を含むことを特徴とする、上記一般式(1)で示されるマグネシウムビス(ジアルキルアミド)化合物の製造方法。
で示されるジアルキルアミンと、アルキルリチウムとを反応させて、一般式(4)
方法(A)は、ジアルキルマグネシウム化合物とジアルキルアミンとを反応させて、マグネシウムビス(ジアルキルアミド)化合物を合成する方法である。
方法(B)は、ジアルキルアミンとアルキルリチウムとから合成したリチウムジアルキルアミドと、ジハロゲノマグネシウムとを反応させて、マグネシウムビス(ジアルキルアミド)化合物を合成する方法である。
攪拌装置、温度計及び滴下漏斗を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、金属マグネシウム5.5g(0.23mol)及びジエチルエーテル20mlを加えた後、ブロモブタン3.0g(21mmol)をゆるやかに滴下した。次いで、ジエチルエーテル180ml及びブロモブタン25g(0.18mol)をゆるやかに滴下し、攪拌しながら40℃で2時間反応させ、更にジオキサン55g(0.62mol)を加えて攪拌しながら40℃で2時間反応させた。反応終了後、アルゴン雰囲気にて反応液を濾過し、濾液を減圧下で濃縮した。濃縮物を加熱しながら真空乾燥させて、ジブチルマグネシウム22gを得た(単離収率;80%)。
融点;140~141℃。
実施例1において、ジアルキルアミンをt-ブチルエチルアミン11g(0.11mol)に変えたこと以外は、実施例1と同様に反応を行った。その結果、白色固体として、マグネシウムビス(t-ブチルエチルアミド)5.8gを得た(単離収率;52%)。
融点;75~78℃
攪拌装置、温度計及び滴下漏斗を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、t-ブチルイソプロピルアミン1.8g(16mmol)及びヘプタン30mlを加えた。次いで、液温を25℃付近に維持しながら1.6mol/lのn-ブチルリチウム・へキサン溶液10ml(16mmol)をゆるやかに滴下し、攪拌しながら25℃で2時間反応させた。反応終了後、反応液を減圧下にて濃縮し、リチウム-t-ブチルイソプロピルアミド1.7gを得た(単離収率;88%)。
攪拌装置、温度計及び滴下漏斗を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、t-ブチル-t-ペンチルアミン1.1g(8.0mmol)及びヘプタン15mlを加え、液温を25℃付近に維持しながら1.6mol/lのn-ブチルリチウム・へキサン溶液5.0ml(8.0mmol)をゆるやかに滴下し、攪拌しながら25℃で2時間反応させた。反応終了後、反応液を減圧下で濃縮して、リチウム-t-ブチル-t-ペンチルアミド1.1gを得た(単離収率;90%)。
融点;170℃以上
実施例1で得られたマグネシウムビス(t-ブチルメチルアミド)(化合物(6))を用いて、CVD法による蒸着実験を行い、成膜特性を評価した。蒸着実験には、図1に示す装置を使用した。蒸着条件及び膜特性は以下の通りであった。
マグネシウム原料;マグネシウムビス(t-ブチルメチルアミド)(化合物(6))
気化温度;100℃
Heキャリアー流量;100sccm
酸素流量;10sccm
基板材料;SiO2/Si
基板温度;300℃
反応系内圧力;1.33kPa
蒸着時間;30分
膜厚;50nm以上
XPS分析;マグネシウム酸化膜
炭素含有率;検出されず
窒素含有率;検出されず
ビス(シクロペンタジエニル)マグネシウムを用いて、実施例5と同様にCVD法による蒸着実験を行い、成膜特性を評価した。蒸着条件及び膜特性は以下の通りであった。なお、各種条件を調整して原料の供給量を実施例5と揃えて蒸着実験を行った。
マグネシウム原料;ビス(シクロペンタジエニル)マグネシウム
気化温度;30℃
Heキャリアー流量;10sccm
希釈He流量;90sccm
酸素流量;10sccm
基板材料;SiO2/Si
基板温度;300℃
反応系内圧力;10Torr(約1.33kPa)
蒸着時間;30分
膜厚;50nm以上
XPS分析;マグネシウム酸化膜
炭素含有率;30%(炭素原子換算)
窒素含有率;検出されず(そもそも原料に窒素原子が存在しない)
2.希釈ガス(He)
3.反応ガス(O2)
4.マスフローコントローラー
5.マスフローコントローラー
6.マスフローコントローラー
7.マグネシウム原料容器(気化器)
8.恒温槽
9.反応器
10.基板
11.反応器ヒーター
12.圧力計
13.トラップ
14.真空ポンプ
Claims (5)
- 一般式(2)
(式中、R3及びR4は、同一でも異なっていてもよく、それぞれ互いに独立に、炭素原子数1~10の直鎖状又は分岐状のアルキル基を示す。)
で示されるジアルキルマグネシウム化合物と、一般式(3)
(式中、R1はイソプロピル基、又は炭素原子数4~6の分岐状のアルキル基を示し、R2は炭素原子数1~5の直鎖状又は分岐状のアルキル基を示す。但し、R1及びR2が共にイソプロピル基の場合、R1及びR2が共にイソブチル基の場合、及び、R1がイソプロピル基でありR2がメチル基の場合を除く。)
で示されるジアルキルアミンとを反応させる工程を含むことを特徴とする、一般式(1)
(式中、R1及びR2は前記と同義である。)
で示される請求項1記載のマグネシウムビス(ジアルキルアミド)化合物の製造方法。 - 一般式(3)
(式中、R1はイソプロピル基、又は炭素原子数4~6の分岐状のアルキル基を示し、R2は炭素原子数1~5の直鎖状又は分岐状のアルキル基を示す。但し、R1及びR2が共にイソプロピル基の場合、R1及びR2が共にイソブチル基の場合、及び、R1がイソプロピル基でありR2がメチル基の場合を除く。)
で示されるジアルキルアミンと、アルキルリチウムとを反応させて、一般式(4)
(式中、R1及びR2は前記と同義である。)
で示されるリチウムジアルキルアミド化合物を合成する工程と、
前記一般式(4)で示されるリチウムジアルキルアミド化合物と、一般式(5)
(式中、Xはハロゲン原子を示す。)
で示されるジハロゲノマグネシウムとを反応させる工程を含むことを特徴とする、一般式(1)
(式中、R1及びR2は前記と同義である。)
で示される請求項1記載のマグネシウムビス(ジアルキルアミド)化合物の製造方法。 - 請求項1に記載のマグネシウムビス(ジアルキルアミド)化合物をマグネシウム供給源として用いた化学気相蒸着法によるマグネシウム含有薄膜の製造方法。
- 請求項1に記載のマグネシウムビス(ジアルキルアミド)化合物を含むマグネシウム含有薄膜形成用原料。
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| JP2012527770A JP5817727B2 (ja) | 2010-08-06 | 2011-08-04 | マグネシウムビス(ジアルキルアミド)化合物、及び当該マグネシウム化合物を用いるマグネシウム含有薄膜の製造方法 |
| KR1020137005201A KR20130136445A (ko) | 2010-08-06 | 2011-08-04 | 마그네슘비스(디알킬아미드) 화합물, 및 당해 마그네슘 화합물을 사용하는 마그네슘 함유 박막의 제조 방법 |
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| KR (1) | KR20130136445A (ja) |
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Citations (6)
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|---|---|---|---|---|
| JPS63238086A (ja) * | 1987-03-13 | 1988-10-04 | リチウム コーポレーション オブ アメリカ | エーテルを含まない有機金属アミド組成物 |
| US5892083A (en) * | 1997-12-01 | 1999-04-06 | Wayne State University | Organometallic source compounds for chemical vapor deposition |
| DE10061317C1 (de) * | 2000-12-08 | 2002-04-04 | Chemetall Gmbh | Verfahren zur Herstellung von Magnesium-bis[di(organo)amiden] und deren Verwendung |
| JP2005126334A (ja) * | 2003-10-21 | 2005-05-19 | Mitsubishi Materials Corp | 有機金属化合物及び該化合物を含む溶液原料並びに金属酸化膜薄膜 |
| WO2008039960A1 (en) * | 2006-09-28 | 2008-04-03 | Praxair Technology, Inc. | Heteroleptic organometallic compounds |
| JP2009536267A (ja) * | 2006-05-05 | 2009-10-08 | アプライド マテリアルズ インコーポレイテッド | 誘電膜の原子層堆積のための化学物質の光励起のための方法および装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4944894A (en) * | 1988-02-25 | 1990-07-31 | Lithium Corporatoin Of America | Ether free organometallic amide compositions |
| TW200941596A (en) * | 2008-03-19 | 2009-10-01 | Univ Nat Formosa | Method for manufacturing manganese-doped zinc-oxide (Mn-doped ZnO) thin film with adjustable energy gap using sol-gel process and spin coating method |
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2011
- 2011-08-04 JP JP2012527770A patent/JP5817727B2/ja not_active Expired - Fee Related
- 2011-08-04 WO PCT/JP2011/067880 patent/WO2012018086A1/ja not_active Ceased
- 2011-08-04 KR KR1020137005201A patent/KR20130136445A/ko not_active Withdrawn
- 2011-08-05 TW TW100128015A patent/TWI504605B/zh not_active IP Right Cessation
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| JPS63238086A (ja) * | 1987-03-13 | 1988-10-04 | リチウム コーポレーション オブ アメリカ | エーテルを含まない有機金属アミド組成物 |
| US5892083A (en) * | 1997-12-01 | 1999-04-06 | Wayne State University | Organometallic source compounds for chemical vapor deposition |
| DE10061317C1 (de) * | 2000-12-08 | 2002-04-04 | Chemetall Gmbh | Verfahren zur Herstellung von Magnesium-bis[di(organo)amiden] und deren Verwendung |
| JP2005126334A (ja) * | 2003-10-21 | 2005-05-19 | Mitsubishi Materials Corp | 有機金属化合物及び該化合物を含む溶液原料並びに金属酸化膜薄膜 |
| JP2009536267A (ja) * | 2006-05-05 | 2009-10-08 | アプライド マテリアルズ インコーポレイテッド | 誘電膜の原子層堆積のための化学物質の光励起のための方法および装置 |
| WO2008039960A1 (en) * | 2006-09-28 | 2008-04-03 | Praxair Technology, Inc. | Heteroleptic organometallic compounds |
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| C.J.ROHBOGNER ET AL., EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, no. 11, 2009, pages 1781 - 1795 * |
| E.C.ASHBY ET AL.: "Reactions of Magnesium Hydrides. 3.Stereoselective Reduction of Cyclic and Bicyclic Ketones by Dialkylaminomagnesium Hydrides", JOURNAL OF ORGANIC CHEMISTRY, vol. 43, no. 8, 1978, pages 1564 - 1566 * |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201223957A (en) | 2012-06-16 |
| TWI504605B (zh) | 2015-10-21 |
| JPWO2012018086A1 (ja) | 2013-10-03 |
| KR20130136445A (ko) | 2013-12-12 |
| JP5817727B2 (ja) | 2015-11-18 |
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