Crystal structures of fac-tricarbonylchlorido(6,6′-dihydroxy-2,2′-bipyridine)rhenium(I) tetrahydrofuran monosolvate and fac-bromidotricarbonyl(6,6′-dihydroxy-2,2′-bipyridine)manganese(I) tetrahydrofuran monosolvate

Abstract

The structures of two facially coordinated Group VII metal complexes, fac-[ReCl(C10H8N2O2)(CO)3]·C4H8O (I·THF) and fac-[MnBr(C10H8N2O2)(CO)3]·C4H8O (II·THF), are reported. In both complexes, the metal ion is coordinated by three carbonyl ligands, a halide ligand, and a 6,6′-dihydroxy-2,2′-bipyridine ligand in a distorted octahedral geometry. Both complexes co-crystallize with a non-coordinating tetrahydrofuran (THF) solvent molecule and exhibit intermolecular but not intramolecular hydrogen bonding. In both crystal structures, chains of complexes are formed due to intermolecular hydrogen bonding between a hydroxy group from the 6,6′-dihydroxy-2,2′-bipyridine ligand and the halide ligand from a neighboring complex. The THF molecule is hydrogen bonded to the remaining hydroxy group.

Keywords

• crystal structure
• 6,6′-dihydroxy-2,2′-bipyridine ligand
• rhenium complex
• manganese complex
• hydrogen bonding
• selective catalysts for CO2 reduction