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  are formed in the crystal packing through O—H⋯Cl hydrogen bonds.
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 ▶).