TY - JOUR
T1 - Synthesis, structures, and magnetic properties of four copper compounds with 2,2′-dinitrobiphenyl-4,4′-dicarboxylate
AU - Zhang, Jian Yong
AU - Li, Xiu Bing
AU - Wang, Kun
AU - Ma, Yu
AU - Cheng, Ai Ling
AU - Gao, En Qing
PY - 2012/9/18
Y1 - 2012/9/18
N2 - Four copper(ii) coordination polymers of 2,2′-dinitrobiphenyl-4,4′-dicarboxylic acid (H2dnbpdc), with or without 4,4′-bipyridyl (bipy) as co-ligand, were synthesized under hydrothermal conditions and characterized crystallographically and magnetically. They are formulated as [Cu2(dnbpdc)(OH)2]n (1), [Cu(Hdnbpdc)2(bipy)]n·2nH2O (2), [Cu2(dnbpdc)2(bipy)(H2O)2]n·2nH2O (3) and [Cu3(dnbpdc)2(bipy)(OH)2(H2O)]n·nH2O (4). Compound 1 exhibits a 2D coordination network, in which infinite [Cu(μ-OH)(μ-COO)]n chains are linked by the backbones of the dnbpdc2− ligands. Magnetic studies indicated antiferromagnetic coupling through the mixed hydroxo and carboxylate bridges between CuII ions. In 2, mononuclear CuII centers are linked by Hdnbpdc- and bipy ligands into 2D grid-like layers. Compound 3 also consists of 2D grid-like coordination layers, which however are based on aqua-bridged Cu2(μ-OH2)2 units. Magnetic studies showed that the magnetic coupling through the double aqua bridges is antiferromagnetic. Compound 4 exhibits a 3D framework in which [Cu(OH)(COO)]n chains are linked by bipy and dnbpdc2− ligands. The chain has a complicated bridging network involving μ3-OH, μ2-OH and μ-COO, and magnetic studies revealed overall antiferromagnetic interactions within the chain.
AB - Four copper(ii) coordination polymers of 2,2′-dinitrobiphenyl-4,4′-dicarboxylic acid (H2dnbpdc), with or without 4,4′-bipyridyl (bipy) as co-ligand, were synthesized under hydrothermal conditions and characterized crystallographically and magnetically. They are formulated as [Cu2(dnbpdc)(OH)2]n (1), [Cu(Hdnbpdc)2(bipy)]n·2nH2O (2), [Cu2(dnbpdc)2(bipy)(H2O)2]n·2nH2O (3) and [Cu3(dnbpdc)2(bipy)(OH)2(H2O)]n·nH2O (4). Compound 1 exhibits a 2D coordination network, in which infinite [Cu(μ-OH)(μ-COO)]n chains are linked by the backbones of the dnbpdc2− ligands. Magnetic studies indicated antiferromagnetic coupling through the mixed hydroxo and carboxylate bridges between CuII ions. In 2, mononuclear CuII centers are linked by Hdnbpdc- and bipy ligands into 2D grid-like layers. Compound 3 also consists of 2D grid-like coordination layers, which however are based on aqua-bridged Cu2(μ-OH2)2 units. Magnetic studies showed that the magnetic coupling through the double aqua bridges is antiferromagnetic. Compound 4 exhibits a 3D framework in which [Cu(OH)(COO)]n chains are linked by bipy and dnbpdc2− ligands. The chain has a complicated bridging network involving μ3-OH, μ2-OH and μ-COO, and magnetic studies revealed overall antiferromagnetic interactions within the chain.
UR - https://www.scopus.com/pages/publications/84870859580
U2 - 10.1039/c2dt31378b
DO - 10.1039/c2dt31378b
M3 - 文章
AN - SCOPUS:84870859580
SN - 1470-479X
VL - 41
SP - 12192
EP - 12199
JO - Journal of the Chemical Society. Dalton Transactions
JF - Journal of the Chemical Society. Dalton Transactions
IS - 39
ER -