A synthetic strategy for switching the single ion anisotropy in tetrahedral Co(II) complexes

Shefali Vaidya, Apoorva Upadhyay, Saurabh Kumar Singh, Tulika Gupta, Subrata Tewary, Stuart K Langley, James Paul S Walsh, Keith Spencer Murray, Gopalan Rajaraman, Maheswaran Shanmugam

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Abstract

Four novel mononuclear tetrahedral cobalt(ii) complexes containing exocyclic mesoionic ligands of molecular formulae [CoII(L1)(X)2(MeCN)] X = Cl (1) or Br (2) and [CoII(L2)(X)2(MeCN)], X = Cl (3) or Br (4) have been reported. It is found that simple substitution of L1 (O donor in 1 and 2) by L2 (S donor in 3 and 4) results in switching of the single ion magnetic anisotropy parameter (D) from positive to negative, with a significant change in magnitude.
Original languageEnglish
Pages (from-to)3739 - 3742
Number of pages4
JournalChemical Communications
Volume51
Issue number18
DOIs
Publication statusPublished - 2015

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