Research Article: Bis(2-amino-5-methyl-1,3,4-thia­diazole-κN3)dichloridocobalt(II)

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Ye Song, Yu-Fei Ji, Min-Yan Kang, Zhi-Liang Liu.


In the monomeric title complex, [CoCl2(C3H5N3S)2], the CoII atom is tetra­coordinated by two chloride anions and two N atoms from two monodentate 2-amino-5-methyl-1,3,4-thia­diazole ligands, giving a slightly distorted tetra­hedral stereochemistry [bond angle range about Co = 105.16 (12)–112.50 (10)°]. In the complex, the dihedral angle between the 1,3,4-thia­diazole planes in the two ligands is 72.8 (1)°. There are two intra­molecular N—H⋯Cl inter­actions in the complex unit, while in the crystal, inter­molecular N—H⋯N and N—H⋯Cl hydrogen bonds link these units into a two-dimensional layered structure parallel to (011).

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For potential applications of complexes containing 2,5-disubstituted 1,3,4-thia­diazo­les, see: Katritzky et al. (2010 ▶); Seed et al. (2007 ▶). For the preparation of the 2-amino-5-methyl-1,3,4-thia­diazole ligand, see: Chubb & Nissenbaum (1959 ▶). For complexes with this ligand, see: Lynch & Ewington (2001 ▶); Neverov et al. (1986 ▶); Antolini et al. (1988 ▶).