Synthesis, crystal structure and valence tautomerism of a 4,4′-bipyridine-bridged one-dimensional chiral cobalt complex

Wei Qin Cheng, Guo Ling Li, Ran Zhang, Zhong Hai Ni, Wen Feng Wang, Osamu Sato

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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).

Original languageEnglish
Pages (from-to)68-72
Number of pages5
JournalJournal of Molecular Structure
Volume1087
DOIs
Publication statusPublished - May 5 2015

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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