Three-dimensional 4f-5d coordination polymer and preparation method and application thereof

A coordination polymer, 4f-5d technology, applied in the fields of magnetism and organic chemistry of organic materials/organic magnetic materials, can solve the problems of lack of synthesis strategies and limited number of coordination polymers, and achieve good application prospects

Inactive Publication Date: 2010-09-29
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high coordination numbers of lanthanide metals and the lack of effective synthesis strategies for 4f-nd (n=3-5) systems, the development of octacyano-lanthanide bimetallic coordination polymer materials is limited. However, the number of such coordination polymers currently reported is very limited, only such as: Tanase, S.; Evangelisti, M.; de Jongh, L.J.; Smits, J.M.M.; de Gelder, R.Inorg.Chim.Acta. 2008, 361, 3548-3554; P.; Pelka, R.; K.; Supel, J.; Rams, M.; Tomala, K.; Sieklucka, B. Inorg. Chem. 2007, 46, 8924-8938. Prins, F.; , H.; Spek, A.L.; Tanase, S.Angew.Chem., Int.Ed.2007, 46, 6081-6084, etc.

Method used

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  • Three-dimensional 4f-5d coordination polymer and preparation method and application thereof
  • Three-dimensional 4f-5d coordination polymer and preparation method and application thereof
  • Three-dimensional 4f-5d coordination polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Preparation of a powder sample of the three-dimensional 4f-5d coordination polymer 1 of Ln=La:

[0023] La(NO 3 ) 3 ·6H 2 O(0.20mmol) and [HN(n-C 4 h 9 ) 3 ] 3 [W(CN) 8 ]·4H 2 O (0.20mmol) was mixed in acetonitrile (40mL) to obtain a two-dimensional layered coordination polymer La(H 2 O) 5 W(CN) 8 . La(H 2 O) 5 W(CN) 8 (0.20mmol) and the columnar ligand pyrazine (0.60mmol) were mixed in acetonitrile (55mL) to obtain a three-dimensional 4d-5f coordination polymer [La(H 2 O) 4 (pyrazine) 0.5 ]W(CN) 8 (1).

Embodiment 2

[0024] Example 2 Preparation of a powder sample of the three-dimensional 4f-5d coordination polymer 2 of Ln=Ce:

[0025] Ce(NO 3 ) 3 ·6H 2 O(0.20mmol) and [HN(n-C 4 h 9 ) 3 ] 3 [W(CN) 8 ]·4H 2 O (0.20mmol) was mixed in acetonitrile (40mL) to obtain a two-dimensional layered coordination polymer Ce(H 2 O) 5 W(CN) 8 . Ce(H 2 O) 5 W(CN) 8 (0.20mmol) and the columnar ligand pyrazine (0.60mmol) were mixed in acetonitrile (55mL) to obtain a three-dimensional 4d-5f coordination polymer [Ce(H 2 O) 4 (pyrazine) 0.5 ]W(CN) 8 (2).

Embodiment 3

[0026] Example 3 Preparation of powder sample of Ln=Pr three-dimensional 4f-5d coordination polymer 3:

[0027] Pr(NO 3 ) 3 ·6H 2 O(0.20mmol) and [HN(n-C 4 h 9 ) 3 ] 3 [W(CN) 8 ]·4H 2 O (0.20mmol) was mixed in acetonitrile (40mL) to obtain a two-dimensional layered coordination polymer Pr(H 2 O) 5 W(CN) 8 . Pr(H 2 O) 5 W(CN) 8 (0.20mmol) and the columnar ligand pyrazine (0.60mmol) were mixed in acetonitrile (55mL) to obtain a three-dimensional 4d-5f coordination polymer [Pr(H 2 O) 4 (pyrazine) 0.5 ]W(CN) 8 (3).

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Abstract

The invention relates to a three-dimensional 4f-5d coordination polymer and a preparation method and application thereof. The three-dimensional 4f-5d coordination polymer Ln(H2O)4(pyrazine)0.5W(CN)8 is prepared by using a mixing method which takes a neutral two-dimensional layered coordination polymer as a building block and taking pyrazine as a columnar ligand and puts the neutral two-dimensional layered coordination polymer and the pyrazine into acetonitrile, wherein Ln is any one of La, Ce, Pr, Nd, Sm, Eu, Gd and Tb. The coordination polymer has a ferromagnetic coupling mutual effect and has a significant application prospect in the field of magnetics.

Description

technical field [0001] The invention belongs to the technical field of synthesis of molecular-based magnetic materials, in particular to the synthesis and application of a coordination polymer material. Background technique [0002] Cyanometallic complexes are at the forefront of inorganic chemistry due to their novel topologies and interesting properties. In recent years, octacyanometallic salts with high coordination numbers [M(CN) 8 ] 3- (M=Mo, W) or [Nb(CN) 8 ] 4- began to attract widespread attention, such as P.; Korzeniak, T.; Podgajny, R.; Sieklucka, B. Coord. Chem. Rev. 2006, 250, 2234-2260. Paramagnetic [M(CN) 8 ] 3- (M=Mo, W) or [Nb(CN) 8 ] 4- Coordination polymers assembled with transition metals exhibit different dimensional structures and unique magnetic properties, such as high Curie temperature, light-induced magnetism, and single-molecule magnetism. In Kosaka, W.; Imoto, K.; Tsunobuchi, Y.; Ohkoshi, S. Inorg. Chem. 2009, 48, 4604-4606.; Zhao, H.H.;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00H01F1/42
Inventor 周虎袁爱华钱苏延宋友刁国旺
Owner JIANGSU UNIV OF SCI & TECH
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