Abstract
In the title complex, [CoIIICl(C2H8N2)2(C2H3N3)]Cl2, the CoIIIion has a distorted octahedral environment. It is surrounded by four N atoms in the equatorial plane, with another N atom and a Cl atom occupying the axial positions. Both five-membered Co—N—C—C—N rings adopt a twist conformation. The Co—N bond lengths range from 1.941 (2) to 1.954 (1) Å, while the Co—Cl bond length is 2.257 (1) Å. In the crystal, molecules are linked by N—H...N, N—H...Cl and C—H...Cl hydrogen bonds. Dimers are formed by N—H...Cl hydrogen-bonding interactions between amine H-atom donors and chloride ions resulting in anR42(8) ring motif. These dimers are further connected in a head-to-tail fashionviaN—H...Cl and C—H...Cl hydrogen bonds. All the interactions together combine to link the molecules into a three-dimensional framework.
Highlights
In the title complex, [CoIIICl(C2H8N2)2(C2H3N3)]Cl2, the CoIII ion has a distorted octahedral environment
Molecules are linked by N— HÁ Á ÁN, N—HÁ Á ÁCl and C—HÁ Á ÁCl hydrogen bonds
These dimers are further connected in a head-to-tail fashion via N—HÁ Á ÁCl and C—HÁ Á ÁCl hydrogen bonds
Summary
Appropriate tailoring of the coordination environment and specific incorporation of ligands around transition metal ions are of key importance in the modification of the properties of metal complexes with respect to spectroscopic, redox activity in interfacial electron-transfer reactions, catalytic and photocatalytic properties (Xu et al, 2008; Anbalagan, 2011). As a result of the excellent coordination ability of nitrogen-containing ligands, research on transition metal complexes involving ligands that coordinate through an N atom, such as simple amines (Mitzi, 1996; Deeth et al, 1984), cyanides (Wu et al, 2003; Shores et al, 2002), or N-heterocyclic rings (Hagrman et al, 1999; Willett et al, 2001), has always been an active area in coordination chemistry.
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