Issue 14, 2012
From the journal:

CrystEngComm

Co(ii)/Ni(ii) coordination polymers incorporated with a bent connector: crystal structures and magnetic properties†

Fu-Ping Huang,ab   Hai-Ye Li,a   Qing Yu,a   He-Dong Bian,*a   Jin-Lei Tian,b   Shi-Ping Yan,*b   Dai-Zheng Liaob  and  Peng Chengb  

* Corresponding authors

a Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Department Chemistry and Chemical Engineering, Guangxi Normal University), Ministry of Education of China, Guilin, P. R. China
E-mail: gxnuchem312@yahoo.com.cn

b Department of Chemistry, Nankai University, Tianjin, P. R. China
E-mail: yansp@nankai.edu.cn

Abstract

The hydrothermal reactions of a bent ligand, 1H-3,5-bis(4-pyridyl)-1,2,4-triazole (bpt), with Co/Ni(II) ions as well as a series of polycarboxylate co-ligands yielded five new coordination polymers, namely, {[Co2(fum)2(bpt)2(H2O)]·3H2O}n (1), {[Co(mal)(bpt)0.5(H2O)]·1.5H2O}n (2), {[Co2(bptc)(bpt)2(EtOH)(H2O)2]·2H2O}n (3), [Ni2(btc)(bpt)2(H2O)2]·6H2O (4), [Ni2(Hbidc)2(bpt)2]·7H2O (5) (here, H2fum = fumaric acid, H2mal = malonic acid, H4bptc = 3,3′,4,4′-benzophenone-tetracarboxylate acid, H4btc = 1,2,4,5-benzenetetracarboxylate acid, H3bidc = 1H-benzimidazole-5,6-dicarboxylic acid). These complexes exhibit different architectures and magnetic behaviors: 1 has a 3D (3,5)-connected (42·6)(42·65·83) topology, showing field-induced spin-flop transition; 2 and 3 both have a (3,4)-connected topology, exhibiting normal antiferromagnetism, with a 3D (63)(63·83) symbol for 2and a 2D (62·8)2(64·82) symbol for 3, respectively. In 4 and 5, the topological analysis results reveal that 4 can be simplified to a 3D 4-connected NbO net, while 5 is a 3D trinodal (3,4,6)-connected (63)(65·8)(612·8·102) net. Both 4 and 5 exhibit spin-canted antiferromagnetism.

Graphical abstract: Co(ii)/Ni(ii) coordination polymers incorporated with a bent connector: crystal structures and magnetic properties

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Article information

DOI
https://doi.org/10.1039/C2CE25586C
Article type
Paper
Submitted
23 Dec 2011
Accepted
17 Apr 2012
First published
19 Apr 2012

CrystEngComm, 2012,14, 4756-4766

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Co(II)/Ni(II) coordination polymers incorporated with a bent connector: crystal structures and magnetic properties

F. Huang, H. Li, Q. Yu, H. Bian, J. Tian, S. Yan, D. Liao and P. Cheng, CrystEngComm, 2012, 14, 4756 DOI: 10.1039/C2CE25586C

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