Abstract
A new chain cobalt(II) complex, [Co(L)2]n (L = 5-methylsulfanyl-1,3,4-thiadiazole-2-thione), has been synthesized. Single crystal analysis shows that it crystallizes in tetragonal space group I-4. The asymmetric unit contains four independent Co(II) ions, and two independent L ligands. Two Co(II) metal center ions are four-coordinated via a ring N atom in tetrahedral CoN4 and the other two Co(II) ions are four-coordinated via the thione group in tetrahedral CoS4 coordination environment. Magnetic investigations show that the complex reveals strong antiferromagnetic coupling through NSN bridges between adjacent Co(II) ions and the complex also exhibits long-range magnetic ordering under low temperature. Furthermore, the isothermal field-dependent magnetization exhibits a small hysteresis loop at low temperature in this one dimensional complex.
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