Diverse magnetic and electrical properties of molecular solids containing the thiazyl radical BDTA

A thiazyl radical, 1,3,2-benzodithiazolyl is a useful building block for molecular conductors and magnets because it can operate as a counter cation, a donor or a ligand. We report semiconductive behaviour, ferromagnetic coupling, ideal 1D Heisenberg chain, charge-transfer phase transition and multi-conducting band system in the BDTA complexes of TCNQ, [M(mnt)2] (M = Co, Ni, Cu), and [Ni(dmit)2].