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Inorg Chem. 2016 May 16;55(10):4891-6. doi: 10.1021/acs.inorgchem.6b00416. Epub 2016 May 05.

Spin-Crossover Phenomenon in a Pentanuclear Iron(II) Cluster Helicate.

Inorganic chemistry

Zheng Yan, Wei Liu, Yuan-Yuan Peng, Yan-Cong Chen, Quan-Wen Li, Zhao-Ping Ni, Ming-Liang Tong

Affiliations

  1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P. R. China.
  2. College of Biological, Chemical Sciences and Engineering, Jiaxing University , Jiaxing, Zhejiang 314001, P. R. China.

PMID: 27149424 DOI: 10.1021/acs.inorgchem.6b00416

Abstract

The first spin-crossover cluster helicate [{Fe(II)(μ-bpt)3}2Fe(II)3(μ3-O)][Fe(II)2(μ-Cl)(μ-bpt)(NCS)4(H2O)]·2H2O·C2H5OH [Hbpt = 3,5-bis(pyridin-2-yl)-1,2,4-triazole] was reported, in which one spin-crossover unit and one low-spin triple-stranded [Fe(II)(bpt)3](-) unit wrapped a rare planar [Fe(II)3(μ3-O)](4+) core to form a bis(triple-helical) cation with trigonal-bipyramidal topology. The origin of different magnetic behaviors of two [Fe(II)(bpt)3](-) units could be ascribed to their different intermolecular interactions.

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