TY - JOUR
T1 - Synthesis, crystal structure and valence tautomerism of a 4,4′-bipyridine-bridged one-dimensional chiral cobalt complex
AU - Cheng, Wei Qin
AU - Li, Guo Ling
AU - Zhang, Ran
AU - Ni, Zhong Hai
AU - Wang, Wen Feng
AU - Sato, Osamu
N1 - Funding Information:
The authors are grateful for the research supports the Priority Academic Program Development of Jiangsu Higher Education Institutions and the Fundamental Research Funds for the Central Universities ( 2014ZDPY25 ).
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/5/5
Y1 - 2015/5/5
N2 - A linear-chain cobalt coordination polymer, [Co(2,3-LH2)2(4,4′-bipy)]·2H2O·4,4′-bipy]n (1) (2,3-LH2 = 2,3-tetrahydroxy-9,10-dimethyl-9,10-dihydro- 9,10-ethanoanthracene, 4,4′-bipy = 4,4′-bipyridine), has been synthesized and structurally characterized. Single-crystal X-ray analysis reveals that complex 1 is a chiral polymer assemblied from achiral components. The complex 1 crystallizes in the chiral space group P3221 and the central Co ion has a slightly distorted octahedral coordination environment. The temperature dependence of magnetic susceptibility indicates that the complex 1 undergoes valence tautomeric interconversion between low-spin ls-[CoIII(2,3-LH2Cat)(2,3-LH2SQ)] and high-spin hs-[CoII(2,3-LH2SQ)2] (2,3-LH2Cat = 2,3-LH2catecholate, 2,3-LH2SQ = 2,3-LH2semiquinone).
AB - A linear-chain cobalt coordination polymer, [Co(2,3-LH2)2(4,4′-bipy)]·2H2O·4,4′-bipy]n (1) (2,3-LH2 = 2,3-tetrahydroxy-9,10-dimethyl-9,10-dihydro- 9,10-ethanoanthracene, 4,4′-bipy = 4,4′-bipyridine), has been synthesized and structurally characterized. Single-crystal X-ray analysis reveals that complex 1 is a chiral polymer assemblied from achiral components. The complex 1 crystallizes in the chiral space group P3221 and the central Co ion has a slightly distorted octahedral coordination environment. The temperature dependence of magnetic susceptibility indicates that the complex 1 undergoes valence tautomeric interconversion between low-spin ls-[CoIII(2,3-LH2Cat)(2,3-LH2SQ)] and high-spin hs-[CoII(2,3-LH2SQ)2] (2,3-LH2Cat = 2,3-LH2catecholate, 2,3-LH2SQ = 2,3-LH2semiquinone).
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U2 - 10.1016/j.molstruc.2015.01.049
DO - 10.1016/j.molstruc.2015.01.049
M3 - Article
AN - SCOPUS:84923148010
SN - 0022-2860
VL - 1087
SP - 68
EP - 72
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
ER -