New ion-pair nickel(III) complexes containing [Ni('S2')2] ('S2'2- = 1,2-benzenedithiolate) fragments: Synthesis, crystal structure and properties

Jing Li Xie, Xiao Ming Ren, Cheng He, You Song, Chun Yin Duan, Song Gao, Qing Jin Meng

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Two new ion-pair complexes [1-(4′-fluorobenzyl)pyridinium][Ni(bdt)2] (1) and [1-(4′-bromobenzyl)pyridinium][Ni(bdt)2] (2), in which bdt2- = 1,2-benzenedithiolate ('S2'2-), have been prepared and characterized. X-ray structural analyses showed that 1 and 2 are isostructural, and the anions are centrosymmetric. The 2 non-equiv. anions form different uniform-spaced stacking pattern in 1 and 2. The magnetic measurements of 1 and 2 indicate ferromagnetic behavior in the antiferromagnetic exchange system, which may arise from spin canting. Cyclovoltammetry revealed two quasi-reversible one-electron steps for 1 and 2, which are attributed to Ni(IV/III) and Ni(III/II) redox couples.

Original languageEnglish
Pages (from-to)299-305
Number of pages7
JournalPolyhedron
Volume22
Issue number2
DOIs
StatePublished - 15 Jan 2003
Externally publishedYes

Keywords

  • Crystal structures
  • Magnetism
  • Ni(III) thiolate complexes
  • Spin canting

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