Research Article: Bis[μ-N-(2-oxidobenzyl­idene)pyridine-2-carbohydrazidato]bis­[chlorido(methanol-κO)erbium(III)]

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Hua Yang.


In the binuclear title complex, [Er2(C13H9N3O2)2Cl2(CH3OH)2], the entire mol­ecule is generated by the application of inversion symmetry. Each ErIII ion is seven-coordinated by two O atoms and one N atom from one N-(2-oxidobenzyl­idene)pyridine-2-carbohydrazidate (L2−) ligand, one O atom and one N atom from the symmetry-related L2− ligand, one O atom of a methanol mol­ecule and one chloride anion. The coordination geometry is based on a pseudo-penta­gonal bipyramid. Linear supra­molecular chains along [010] are formed in the crystal packing through O—H⋯Cl hydrogen bonds.

Partial Text

For complexes containing salicyl­aldehyde-2-pyridine­carboxyl-hydrazone and related ligands, see: Guo et al. (2011a ▶,b ▶); Bai et al. (2005 ▶, 2006 ▶); Wu et al. (2004 ▶); Milway et al. (2003 ▶). For the mechanism of the hydrolysis of salicyl­aldehyde thio­semicarbazone, see: Narang & Aggarwal (1974 ▶).