CN113956297B - Co (III) -Co (II) binuclear cobalt single-molecule magnet and preparation method and application thereof - Google Patents
Co (III) -Co (II) binuclear cobalt single-molecule magnet and preparation method and application thereof Download PDFInfo
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- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 26
- 239000010941 cobalt Substances 0.000 title claims abstract description 26
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 230000005291 magnetic effect Effects 0.000 claims abstract description 33
- 229960000549 4-dimethylaminophenol Drugs 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 15
- 239000000696 magnetic material Substances 0.000 claims abstract description 10
- -1 (5-methylpyrazole-3-formyl) -1, 3-propanediamine Chemical compound 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 39
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 24
- 150000002500 ions Chemical class 0.000 claims description 13
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 10
- XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 claims description 10
- 101100006982 Mus musculus Ppcdc gene Proteins 0.000 claims description 8
- 239000003446 ligand Substances 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- ZBYYWKJVSFHYJL-UHFFFAOYSA-L cobalt(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Co+2].CC([O-])=O.CC([O-])=O ZBYYWKJVSFHYJL-UHFFFAOYSA-L 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 8
- 230000005415 magnetization Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005292 diamagnetic effect Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- GPAAEXYTRXIWHR-UHFFFAOYSA-N (1-methylpiperidin-1-ium-1-yl)methanesulfonate Chemical compound [O-]S(=O)(=O)C[N+]1(C)CCCCC1 GPAAEXYTRXIWHR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000238366 Cephalopoda Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000004700 cobalt complex Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005564 crystal structure determination Methods 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
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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
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/06—Cobalt compounds
- C07F15/065—Cobalt compounds without a metal-carbon linkage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/42—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of organic or organo-metallic materials, e.g. graphene
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The invention discloses a Co (III) -Co (II) binuclear cobalt single-molecule magnet, a preparation method and application thereof, wherein the chemical formula of the single-molecule magnet is [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]Wherein H is 4 L is N, N' -bis (5-methylpyrazole-3-formyl) -1, 3-propanediamine, and the structure is as follows:DMAP is 4-dimethylaminopyridine, and has the structure:compared with the prior art, the invention has the following advantages: (1) The Co (III) -Co (II) binuclear cobalt single-molecule magnet can show typical slow relaxation behavior under the condition that an external magnetic field is 0.1T, has the characteristic of single-molecule magnet, and can be used as a molecular-based magnetic material in novel high-density information storage equipment (such as optical discs, hard magnetic discs and the like); (2) The method has the advantages of safe and simple process, high controllability and good reproducibility.
Description
Technical Field
The invention belongs to the technical field of magnetic materials, and relates to a single-molecule magnet material, in particular to a Co (III) -Co (II) binuclear cobalt single-molecule magnet, and a preparation method and application thereof.
Background
The magnetic materials are widely used, and the application market thereof exceeds that of semiconductor materials. Among them, information storage is one of the largest fields of application of magnetic materials. With the development of information technology, there is a demand for an exponentially increasing number of integrated electronic devices and a continuous decrease in device size. The continuous development of integration and miniaturization is limited by the processing technology and the cost, which causes the difficulty of the modern electronic device integration technology. Therefore, the development of molecular-based magnetic materials has become a focus of attention of scientists. Single-molecule magnet (SMM) is an important field of molecular-based magnetic material research, with great application potential in high-density information storage, quantum computers and molecular spinning.
First example transition metal single ion magnet K [ (tpa) was reported by Long et al in 2010 Mes )Fe II ]Single ion magnets based on 3d transition metals have attracted attention from researchers and have been rapidly developed. Currently, single ion magnets based on magnetic centers such as Mn (III), fe (I/II/III), co (II), ni (I), cr (II), and Re (IV) have been reported. Since Co (III) is an diamagnetic ion, co (III) -Co (II) binuclear cobalt single-molecule magnets are also referred to as single-ion magnets, although Co (II) binuclear cobalt single-molecule magnets have two metal ions, but only one magnetic ion Co (II). In the transition metal single ion magnet, the four-coordinated tetrahedral configuration complex has higher stability, and can form a weak ligand field to mix a ground state and an excited state, so that spin-orbit coupling is generated, and the molecule has better single molecule magnet property. In the Co (III) -Co (II) binuclear cobalt single-molecule magnet, the molecules with coordination configuration of the magnetic ion Co (II) are not reported yet.
Disclosure of Invention
The technical problems to be solved are as follows: in order to overcome the defects of the prior art, the invention provides a binuclear cobalt single-molecule magnet with a tetrahedron coordination configuration of magnetic ion Co (II), and a preparation method and application thereof.
The technical scheme is as follows: co (III) -Co (II) binuclear cobalt single-molecule magnet with chemical formula of [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]Wherein H is 4 L is N, N' -bis (5-methylpyrazole-3-formyl) -1, 3-propanediamine, and the structure is as follows:
DMAP is 4-dimethylaminopyridine, and has the structure:
preferably, the chemical structural formula of the single-molecule magnet is:
preferably, the structural unit of the single-molecule magnet is: the crystal belongs to triclinic system, P-1 space group, and unit cell parameter is α＝71.337(12)°，β＝86.676(12)°，γ＝71.710(13)°。
Preferably, the magnetic ion Co (II) coordinates with two nitrogen atoms provided by a ligand L, one nitrogen atom provided by a DMAP and one oxygen atom provided by acetate, forming a four-coordinated tetrahedral structure; the diamagnetic ion Co (III) coordinates to four nitrogen atoms provided by one ligand L and two nitrogen atoms provided by two DMAPs, forming a hexacoordinated octahedral structure.
Preferably, the single-molecule magnet is a purple bulk crystal, and exhibits a typical slow magnetic relaxation process under the action of an externally applied magnetic field.
The preparation method of the Co (III) -Co (II) binuclear cobalt single-molecule magnet comprises the following steps: dissolving 3-methylpyrazole-5-ethyl formate in 1, 3-propylene diamine, heating and refluxing for 14H at 120 ℃ to obtain white solid, washing with methanol and diethyl ether for three times in sequence, and vacuum drying to obtain H 4 L is; cobalt acetate tetrahydrate CoAc 2 ·4H 2 O, 4-dimethylaminopyridine DMAP and H 4 Dissolving L in methanol solution, refluxing at 70deg.C for 2 hr, cooling, and slowly adding diethyl etherAnd (5) performing two-phase diffusion to obtain the nano-composite material.
Preferably, the molar ratio of the 3-methylpyrazole-5-ethyl formate to the 1, 3-propylene diamine is 2:1, coAc 2 ·4H 2 O and DMAP and H 4 The molar ratio of L is 2:3-4:1-1.5.
Preferably, every 1mmol of CoAc 2 ·4H 2 O corresponds to 10-15 mL of methanol, and the consumption of diethyl ether is 2-4 times of that of the methanol.
Preferably, the two-phase diffusion time is 2 to 5 days.
The application of any one of the Co (III) -Co (II) binuclear cobalt single-molecule magnets in preparing molecular-based magnetic materials.
The beneficial effects are that: (1) The Co (III) -Co (II) binuclear cobalt single-molecule magnet can show typical slow relaxation behavior under the condition that an external magnetic field is 0.1T, has the characteristic of single-molecule magnet, and can be used as a molecular-based magnetic material in novel high-density information storage equipment (such as optical discs, hard magnetic discs and the like); (2) The method has the advantages of safe and simple process, high controllability and good reproducibility.
Drawings
FIG. 1 shows a binuclear cobalt single-molecule magnet [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]A crystal structure diagram of (2);
FIG. 2 shows a binuclear cobalt single-molecule magnet [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]A direct current magnetic susceptibility test chart of (2);
FIG. 3 shows a binuclear cobalt single-molecule magnet [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]A field dependent magnetization graph of (2);
FIG. 4 shows a binuclear cobalt single-molecule magnet [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]An imaginary ac susceptibility graph of (a);
FIG. 5 shows a binuclear cobalt single-molecule magnet [ Co ] III Co II (L)(DMAP) 3 (CH 3 COO)]Cole-Cole plot of (c).
Detailed Description
The following examples further illustrate the invention but are not to be construed as limiting the invention. Modifications and substitutions to the method, steps or conditions of the invention without departing from the spirit and nature of the invention are intended to be within the scope of the invention. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.
N, N' -bis (5-methylpyrazole-3-formyl) -1, 3-propanediamine (H) as referred to in the examples below 4 L) is prepared by the following method: under anhydrous and anaerobic conditions, 3-methylpyrazole-5-ethyl formate (13 mmol) is dissolved in 1, 3-propylene diamine (6.5 mmol) to be a brown solution immediately, the solution is heated and refluxed for 14h at 120 ℃ to generate white solid, and the white solid is washed three times by methanol and diethyl ether in sequence and dried in vacuum to obtain the product.
Example 1
N, N' -bis (5-methylpyrazole-3-formyl) -1, 3-propanediamine (0.5 mmol) and 4-dimethylaminopyridine (4 mmol) were dissolved in 5mL of methanol solution and added to 5mL of the solution containing CoAc 2 ·4H 2 O (1 mmol) was immediately changed from pink to purple in a pink methanol solution, the mixture was refluxed at 70℃for 2 hours, cooled, and then 20mL of diethyl ether was slowly dropped to form two-phase layers, and after 3 days, purple crystals were precipitated. The yield was about 62%.
Example 2
N, N' -bis (5-methylpyrazole-3-formyl) -1, 3-propanediamine (0.7 mmol) and 4-dimethylaminopyridine (4.3 mmol) were dissolved in 8mL of methanol and added to 5mL of the solution containing CoAc 2 ·4H 2 O (1 mmol) is immediately changed from pink to purple in a pink methanol solution, the mixed solution is refluxed for 2h at 70 ℃, after cooling, 30mL of diethyl ether is slowly dripped into the mixed solution to form two-phase layers, and purple crystals are precipitated after standing for 4 days. The yield was about 65%.
The characterization of the cobalt-based single ion magnet prepared in this example is as follows:
(1) Crystal structure determination
Selecting single crystal with proper size under microscope, and using graphite monochromized molybdenum target Mo K alpha on Bruker SMART Apex II CCD single crystal instrument at room temperatureAnd testing the structure. Data were collected and unit cells were determined using the APEXII program. The structural data were normalized and absorption corrected using SAINT and sadbs procedures. The structure was resolved using the SHELXTL-2016 procedure. All non-hydrogen atom coordinates are obtained by a difference Fourier synthesis method, the atomic coordinates and the anisotropic temperature factor are corrected by using a full matrix least square method, and all hydrogen atoms are hydrogenated by theory. The structure is shown in FIG. 1, the crystallographic data are shown in Table 1, and the coordination bond lengths are shown in Table 2.
Table 1 Crystal data of the complexes
Table 2 coordination bond Length data for the complexes
The block diagram of fig. 1 shows that: co (II) coordinates to two nitrogen atoms provided by a ligand L, one nitrogen atom of a DMAP and one oxygen atom of acetate, forming a four-coordinated tetrahedral structure; co (III) coordinates to four nitrogen atoms provided by one ligand L and two nitrogen atoms of two DMAP, forming a hexacoordinated octahedral structure.
(2) Characterization of magnetic properties:
the magnetic measurement adopts a superconducting quantum interferometer Quantum Design MPMS SQUID VSM magnetic measurement system. The test temperature of the DC magnetic susceptibility is 2.0-300K, and the magnetic field is 0.1T. The magnetization test temperatures are 2K,3K,4K and 5K, and the magnetic field is 0 to 7T. The frequency range of the imaginary part alternating current magnetic susceptibility and the real part alternating current magnetic susceptibility is 1-999 Hz, the temperature range is 2.0-4.6K, and the externally applied direct current magnetic field is 0.1T.
As shown in FIG. 2, when the temperature is 300K, the DC magnetic susceptibility is [ ]χ) multiplied by temperature (T) is 2.12cm 3 mol -1 K, much greater than the theoretical value of 1.875cm for Co (II) with s=3/2 spins only (g=2) 3 mol -1 K. Thus, the complex not only has a spin magnetic moment, but also has a significant orbital contribution. The product remains substantially unchanged in the range 300-50K, whereas when the temperature is below 50K, the value starts to drop sharply, due to the presence of important magnetic anisotropy in the system. The magnetization curve (fig. 3) shows that when the magnetic field reaches 7T, the magnetization of the complex is not saturated, and the complex has strong magnetic anisotropy. Under the condition that the external direct current field is 0.1T, the imaginary part alternating current magnetic susceptibility χ' of the complex presents obvious temperature dependence and frequency dependence phenomena (figure 4), and slow magnetic relaxation behavior is generated. The corresponding Cole-Cole curve shows a good semicircular distribution, indicating that the relaxation process is a single relaxation process (fig. 5).
In summary, the binuclear cobalt complex prepared by the invention can show typical slow relaxation behavior under the condition that an external magnetic field is 0.1T, has the characteristic of a single-molecule magnet, and can be used as a molecular-based magnetic material in novel high-density information storage equipment (such as optical discs, hard magnetic discs and the like).
Claims (7)
- Co (III) -Co (II) binuclear cobalt single-molecule magnet, characterized in that the single-molecule magnet has the chemical formula of [ Co III Co II (L)(DMAP) 3 (CH 3 COO)]Wherein H is 4 L is N, N' -bis (5-methylpyrazole-3-formyl) -1, 3-propanediamine, and the structure is as follows:DMAP is 4-dimethylaminopyridine, and has the structure:structural unit of the single-molecule magnetThe bits are: the crystal belongs to triclinic system, P-1 space group, and unit cell parameter is α＝71.337(12)°，β＝86.676(12)°，Y＝71.710(13)°；The magnetic ion Co (II) is coordinated with two nitrogen atoms provided by a ligand L, one nitrogen atom provided by a DMAP and one oxygen atom provided by acetate, so that a four-coordinated tetrahedral structure is formed; the antimagnetic ion Co (III) coordinates with four nitrogen atoms provided by one ligand L and two nitrogen atoms provided by two DMAP to form a hexacoordinated octahedral structure;the chemical structural formula of the single-molecule magnet is as follows:
- 2. the Co (III) -Co (II) binuclear cobalt single-molecule magnet according to claim 1, wherein the single-molecule magnet is a purple bulk crystal exhibiting a typical slow magnetic relaxation process under the action of an externally applied magnetic field.
- 3. A method for preparing a Co (III) -Co (II) binuclear cobalt single-molecule magnet according to claim 1 or 2, characterized in that the method comprises the steps of: dissolving 3-methylpyrazole-5-ethyl formate in 1, 3-propylene diamine, heating and refluxing for 14H at 120 ℃ to obtain white solid, washing with methanol and diethyl ether for three times in sequence, and vacuum drying to obtain H 4 L is; cobalt acetate tetrahydrate CoAc 2 ·4H 2 O, 4-dimethylaminopyridine DMAP and H 4 Dissolving L in methanol solution, heating and refluxing at 70deg.C for 2 hr, cooling, and slowly adding diethyl ether to diffuse two phases.
- 4. The method for preparing a Co (III) -Co (II) binuclear cobalt single-molecule magnet as defined in claim 3, wherein the molar ratio of 3-methylpyrazole-5-ethyl formate to 1, 3-propanediamine is 2:1, coAc 2 ·4H 2 O and DMAP and H 4 The molar ratio of L is 2:3-4:1-1.5.
- 5. The method for preparing Co (III) -Co (II) binuclear cobalt single-molecule magnet according to claim 3, wherein each 1mmol of CoAc 2 ·4H 2 O corresponds to 10-15 mL of methanol, and the consumption of diethyl ether is 2-4 times of that of the methanol.
- 6. The method for preparing a Co (III) -Co (II) binuclear cobalt single-molecule magnet according to claim 3, wherein the two-phase diffusion time is 2-5 days.
- 7. Use of a Co (III) -Co (II) binuclear cobalt single-molecule magnet according to claim 1 or 2 for the preparation of a molecular-based magnetic material.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010128191A1 (en) * | 2009-05-04 | 2010-11-11 | Instituto Mediterráneo Para El Avance De La Biotecnología Y La Investigación Sanitaria (Fundación Imabis) | Bivalent pyrazole derivatives as food intake inhibitors |
| CN106432363A (en) * | 2016-09-13 | 2017-02-22 | 天津师范大学 | Water-soluble trinuclear cobalt complex and preparation method thereof |
| CN108864211A (en) * | 2018-06-14 | 2018-11-23 | 杭州电子科技大学 | Ni-Ln isodigeranyl nuclear magnetism complex based on phthalocyanine and preparation method thereof |
| CN113105512A (en) * | 2021-04-15 | 2021-07-13 | 温州大学 | Novel cobalt (III) -sulfur cluster-based coordination polymer with monomolecular magnet property |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010128191A1 (en) * | 2009-05-04 | 2010-11-11 | Instituto Mediterráneo Para El Avance De La Biotecnología Y La Investigación Sanitaria (Fundación Imabis) | Bivalent pyrazole derivatives as food intake inhibitors |
| CN106432363A (en) * | 2016-09-13 | 2017-02-22 | 天津师范大学 | Water-soluble trinuclear cobalt complex and preparation method thereof |
| CN108864211A (en) * | 2018-06-14 | 2018-11-23 | 杭州电子科技大学 | Ni-Ln isodigeranyl nuclear magnetism complex based on phthalocyanine and preparation method thereof |
| CN113105512A (en) * | 2021-04-15 | 2021-07-13 | 温州大学 | Novel cobalt (III) -sulfur cluster-based coordination polymer with monomolecular magnet property |
Non-Patent Citations (1)
| Title |
|---|
| Timothy S. Billson等.《Inorganic Chemistry Communications》/A linear trinuclear mixed oxidation state cobalt(III/II/III) complex with pyrazolate bridging ligands.2000,第3卷(第12期),第718-720页. * |
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