CN110698683A - One-dimensional dysprosium polymer and preparation method thereof - Google Patents
One-dimensional dysprosium polymer and preparation method thereof Download PDFInfo
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- 229910052692 Dysprosium Inorganic materials 0.000 title claims abstract description 26
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229920000642 polymer Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000013078 crystal Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- WJJMNDUMQPNECX-UHFFFAOYSA-N dipicolinic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=N1 WJJMNDUMQPNECX-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- LSPHULWDVZXLIL-UHFFFAOYSA-N Camphoric acid Natural products CC1(C)C(C(O)=O)CCC1(C)C(O)=O LSPHULWDVZXLIL-UHFFFAOYSA-N 0.000 claims abstract description 12
- DCKWZDOAGNMKMX-UHFFFAOYSA-N dysprosium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Dy+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O DCKWZDOAGNMKMX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010439 graphite Substances 0.000 claims abstract description 12
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- LSPHULWDVZXLIL-QUBYGPBYSA-N camphoric acid Chemical compound CC1(C)[C@H](C(O)=O)CC[C@]1(C)C(O)=O LSPHULWDVZXLIL-QUBYGPBYSA-N 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 8
- 239000000706 filtrate Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- 239000000376 reactant Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- YDSWCNNOKPMOTP-UHFFFAOYSA-N mellitic acid Chemical compound OC(=O)C1=C(C(O)=O)C(C(O)=O)=C(C(O)=O)C(C(O)=O)=C1C(O)=O YDSWCNNOKPMOTP-UHFFFAOYSA-N 0.000 description 18
- 239000003446 ligand Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 2
- 229910052768 actinide Inorganic materials 0.000 description 2
- 150000001255 actinides Chemical class 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000004696 coordination complex Chemical class 0.000 description 2
- 238000002447 crystallographic data Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 150000000914 Dysprosium Chemical class 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- SJDPSXSELBBRFW-UHFFFAOYSA-K O.O.O.O.O.O.Cl(=O)(=O)(=O)[O-].[Dy+3].Cl(=O)(=O)(=O)[O-].Cl(=O)(=O)(=O)[O-] Chemical compound O.O.O.O.O.O.Cl(=O)(=O)(=O)[O-].[Dy+3].Cl(=O)(=O)(=O)[O-].Cl(=O)(=O)(=O)[O-] SJDPSXSELBBRFW-UHFFFAOYSA-K 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- SIYZPSYZNCQFDV-UHFFFAOYSA-K dysprosium(3+);triacetate;tetrahydrate Chemical compound O.O.O.O.[Dy+3].CC([O-])=O.CC([O-])=O.CC([O-])=O SIYZPSYZNCQFDV-UHFFFAOYSA-K 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002714 mellitic acid derivatives Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- HFEOHRWLEGXZHW-UHFFFAOYSA-K trichlorodysprosium;hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Dy+3] HFEOHRWLEGXZHW-UHFFFAOYSA-K 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/008—Supramolecular polymers
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Abstract
The invention discloses a one-dimensional dysprosium polymer and a preparation method thereof. The molecular formula of the one-dimensional dysprosium polymer is as follows: [ C ]6H10O11Dy·2(H2O)]nN is an integer and n is not less than 1; the dysprosium polymer belongs to a monoclinic system, P21A/n space group. The preparation method of the dysprosium polymer comprises the following steps: dissolving dysprosium nitrate hexahydrate, camphoric acid or pyridine-2, 6-dicarboxylic acid in water, placing the obtained mixed solution in an open container, inserting an anode and a cathode, electrifying and electrolyzing, filtering the obtained material after electrolysis, collecting filtrate, reacting under heating or non-heating conditions, standing the reactant, separating out crystals, and collecting the crystals to obtain the compound; wherein, the anode and the cathode both adopt graphite electrodes. The preparation method of the invention has the advantages of simplicity, easy control, safety, mild reaction conditions, low cost and good repeatability.
Description
Technical Field
The invention relates to a one-dimensional dysprosium polymer and a preparation method thereof, belonging to the technical field of materials.
Background
Mellitic acid (also known as 1,2,3,4,5, 6-mellitic acid or mellitic acid) contains abundant carboxyl functional groups, has strong coordination capacity, can be used as a ligand of a metal complex, particularly an actinide complex of the metal complex, and has good fluorescence performance. However, mellitic acid salt in nature is usually present in the beeswax, and is a rare and precious organic mineral, which is very expensive, and the price is 300-And g, resulting in greater limitations in the use of the carboxylic acid ligand. In the prior art, graphite oxide and fuming nitric acid are also used for carrying out a co-thermal reaction to generate mellitic acid, but the product obtained by the method has a lot of impurities and is difficult to purify, and NO is generated2And the like, are easy to explode and pollute the air.
The prior actinide complex using mellitic acid as ligand is usually prepared by directly reacting mellitic acid with corresponding metal salt to generate a target compound, but the method has the defects of high cost, difficult purification and the like caused by obtaining mellitic acid, and has the defects of low reaction condition because the temperature is usually above 120 ℃ during direct reaction. At present, no relevant report that mellitic acid obtained by electrolyzing camphoric acid or pyridine-2, 6-dicarboxylic acid by using a graphite electrode reacts with metal salt under mild conditions to obtain a dysprosium mellitic acid complex is found.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a one-dimensional dysprosium polymer with a novel structure and a preparation method thereof.
The molecular formula of the one-dimensional dysprosium polymer is as follows: [ C ]6H10O11Dy·2(H2O)]nN is an integer and n is not less than 1; the one-dimensional dysprosium polymer belongs to a monoclinic system, P21The/n space group, the unit cell parameters are:
α＝90.00°,β＝100.397(2)°,γ＝90.00°。
the repeating unit of the one-dimensional dysprosium polymer is a mononuclear dysprosium complex with the molecular formula of C6H14DyO13Molecular weight is 456.67, and the ligand is 1,2,3,4,5, 6-mellitic acid.
The invention also provides a preparation method of the one-dimensional dysprosium polymer, which comprises the following steps: dissolving dysprosium nitrate hexahydrate, camphoric acid or pyridine-2, 6-dicarboxylic acid in water, placing the obtained mixed solution in an open container, inserting an anode and a cathode, electrifying and electrolyzing, filtering the obtained material after electrolysis, collecting filtrate, reacting under heating or non-heating conditions, standing the reactant, separating out crystals, and collecting the crystals to obtain the compound; wherein, the anode and the cathode both adopt graphite electrodes.
In the preparation method, the molar ratio of the dysprosium nitrate hexahydrate to the camphoric acid or the pyridine-2, 6-dicarboxylic acid is a stoichiometric ratio, specifically 2: 1. in actual practice, dysprosium nitrate hexahydrate may be in relative excess.
In the above preparation method, the amount of water is preferably such that most of the camphoric acid is dissolved but slightly precipitated. Specifically, the amount of water used for the whole raw materials participating in the reaction is usually 15 to 20mL based on 0.5mmol of camphoric acid or pyridine-2, 6-dicarboxylic acid. In the specific dissolving step, dysprosium nitrate hexahydrate and camphorate or pyridine-2, 6-dicarboxylic acid are mixed and then dissolved in distilled water, or the dysprosium nitrate hexahydrate can be added after the camphorate or the pyridine-2, 6-dicarboxylic acid is dissolved in water and stirred for a plurality of minutes.
In the preparation method, the graphite electrode is a commercial electrode, and further processing is not needed before use. The power supply for electrolysis is a direct current power supply, and is usually between 5 and 20V. The period of the electrolysis is preferably at least 5 hours or more, and it is preferable to stop the electrolysis when there is a substance falling off from the graphite electrode as the anode during the electrolysis, and the period of time required for this is generally 18 to 24 hours.
In the above production method, the time required for obtaining the target product when the reaction is carried out without heating is longer than that under heating, and it usually takes 7 to 15 days. When the reaction is carried out under heating conditions, it is preferable to control the reaction at a temperature of 80 ℃ or less, preferably 50 to 65 ℃, and the time of the reaction under the preferable conditions is usually controlled to 18 to 24 hours.
Compared with the prior art, the one-dimensional dysprosium polymer with a novel structure is obtained in a mild environment (the reaction temperature is less than or equal to 80 ℃) by taking the cheap camphoric acid or the pyridine-2, 6-dicarboxylic acid as the raw material, and compared with the prior method of directly taking the mellitic acid as the ligand and synthesizing the dysprosium complex at the temperature of more than 120 ℃, the preparation method is simple, easy to control, safe, mild in reaction condition, low in cost and good in repeatability.
Drawings
FIG. 1 shows [ C ] obtained in example 1 of the present invention6H10O11Dy·2(H2O)]nThe metal coordination environment diagram of (1);
FIG. 2 shows [ C ] obtained in example 1 of the present invention6H10O11Dy·2(H2O)]nThe ligand coordination environment diagram of (1);
FIG. 3 shows [ C ] obtained in example 1 of the present invention6H10O11Dy·2(H2O)]nA one-dimensional structure diagram.
Detailed Description
The present invention will be better understood from the following detailed description of specific examples, which should not be construed as limiting the scope of the present invention.
Example 1
Mixing 100mg (0.5mmol) camphoric acid and 457mg (1mmol) Dy (NO)3)3·6H2Adding O into a 50mL beaker, adding 20mL of distilled water, stirring at normal temperature for 10min, stopping stirring, inserting two graphite electrodes (one is used as an anode and the other is used as a cathode), electrifying for 24h under 12V direct current voltage (at the moment, the graphite electrode as the anode is observed to have substance falling off), stopping electrifying, filtering out impurities such as graphite slag and the like, collecting filtrate, filling into a 20mL sample bottle, covering the sample bottle with a cover, putting the sample bottle into a 60 ℃ oven for reaction for 24h, taking out, standing and cooling, separating out colorless transparent strip crystals at the bottom of the sample bottle, collecting the crystals, and drying. The yield was 8.9% (based on dysprosium nitrate hexahydrate). Elemental analysis (%) (C)6H14DyO13) The experimental values are C, 15.61, H, 3.10; theoretical values of C,15.78, H, 3.09.
Selecting the crystals with proper size obtained in the embodiment, placing the crystals on a Supernova single crystal diffractometer of Agilent company, and carrying out monochromatization by using graphite
And (4) performing single crystal test by using rays. Under the condition of 295K, the method comprises
The diffraction points are collected in a scanning mode within the range of more than or equal to 2.9 degrees and less than or equal to 25.0 degrees. The initial crystal structures of the products obtained in the embodiment are solved by adopting a SHELXS-97 and Olex-2 direct method, the geometric hydrogenation is carried out, and the non-hydrogen atom coordinates and the anisotropic thermal parameters are refined by adopting a SHELXL-97 full matrix least square method. The obtained crystallographic data are shown in the following table 1, partial bond length and bond angle data are shown in the following table 2, and the one-dimensional polymerization diagram of the obtained colorless strip crystal is shown in fig. 3, wherein fig. 1 is a metal coordination environment diagram of the obtained colorless strip crystal, and fig. 2 is a ligand coordination environment diagram of the obtained colorless strip crystal. Therefore, it was confirmed that the crystal obtained in this example was a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]nThe repeating unit of the polymer is a mononuclear dysprosium complex with a molecular formula of C6H14DyO13Molecular weight is 456.67, and the ligand is 1,2,3,4,5, 6-mellitic acid.
Table 1: [ C ]6H10O11Dy·2(H2O)]nCrystallographic data of
Table 2: [ C ]6H10O11Dy·2(H2O)]nPartial bond length of
Key angle (degree) table
Comparative example 1
Example 1 was repeated except that water was changed to a single solvent such as methanol, acetonitrile, dichloromethane, chloroform, DMF or DMSO, or water and the above single solvent were changed in a ratio of 1: 1, and the volume ratio of the mixed solvent to the mixed solvent. As a result, no crystalline or other shaped (e.g., powdery) product is formed.
Comparative example 2
Example 1 was repeated except that dysprosium acetate tetrahydrate, dysprosium perchlorate hexahydrate or dysprosium chloride hexahydrate was used in place of dysprosium nitrate hexahydrate, and an acetic acid molecule (or CH) was desired3COO-) Perchlorate (or ClO)4 -) Or Cl-The ions can replace water molecules participating in coordination, or a complex with a new structure is obtained through bridging of acetate or perchlorate, but no crystal is obtained, which indicates that the thermodynamic conditions for forming dysprosium polymer and crystallizing cannot be achieved by using other dysprosium salts.
Example 2
Example 1 was repeated except that pyridine-2, 6-dicarboxylic acid was used instead of camphoric acid.
As a result, colorless transparent crystals in the form of stripes were obtained. The yield was 8.3% (based on dysprosium nitrate hexahydrate).
The product obtained in the example is analyzed by single crystal diffraction, and the obtained colorless transparent strip crystal is determined to be a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]n。
Example 3
Example 1 was repeated except that the collected filtrate was reacted at room temperature for 7 days.
As a result, colorless transparent crystals in the form of stripes were obtained. The yield was 7.2% (based on dysprosium nitrate hexahydrate).
The product obtained in the example is analyzed by single crystal diffraction, and the obtained colorless transparent strip crystal is determined to be a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]n。
Example 4
Example 1 was repeated, except that the reaction temperature was changed to 50 ℃.
As a result, colorless transparent crystals in the form of stripes were obtained. The yield was 6.6% (based on dysprosium nitrate hexahydrate).
The product obtained in the example is analyzed by single crystal diffraction, and the obtained colorless transparent strip crystal is determined to be a one-dimensional dysprosium polymer [ C ]6H10O11Dy·2(H2O)]n。
Claims (6)
1. A one-dimensional dysprosium polymer characterized by:
the molecular formula of the one-dimensional dysprosium polymer is as follows: [ C ]6H10O11Dy·2(H2O)]nN is an integer and n is not less than 1;
the one-dimensional dysprosium polymer belongs to a monoclinic system, P21The/n space group, the unit cell parameters are:
α＝90.00°,β＝100.397(2)°,γ＝90.00°。
2. the method for preparing a one-dimensional dysprosium polymer according to claim 1, characterized in that: dissolving dysprosium nitrate hexahydrate, camphoric acid or pyridine-2, 6-dicarboxylic acid in water, placing the obtained mixed solution in an open container, inserting an anode and a cathode, electrifying and electrolyzing, filtering the obtained material after electrolysis, collecting filtrate, reacting under heating or non-heating conditions, standing the reactant, separating out crystals, and collecting the crystals to obtain the compound; wherein, the anode and the cathode both adopt graphite electrodes.
3. The method of claim 2, wherein: when the reaction is carried out under heating condition, the reaction temperature is less than or equal to 80 ℃.
4. The production method according to claim 3, characterized in that: the reaction is carried out at 50-65 ℃.
5. The production method according to any one of claims 2 to 4, characterized in that: the time of electrifying and electrolyzing is more than or equal to 5 hours.
6. The production method according to any one of claims 2 to 4, characterized in that: during the electrolysis by energization, the energization is stopped when the graphite electrode as the anode is stripped of the substance.
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