Structural Features of Monomeric Octahedral Monooxo d2-Rhenium(V) Complexes [ReO(Ln)2(Lmono)] with Oxygen Atoms of Bidentate Chelate O, N Ligands (Ln): 2. Complexes with Six-Membered Chelate Rings ReNC3O

Abstract

The structural features of 24 mononuclear octahedral monooxo d²-Re(V) complexes with single charged oxygen atoms of bidentate chelate (O, N) ligands (Lⁿ) of the general formula [ReO(Lⁿ)₂(L_mono)] (where L_mono is a monodentate ligand) containing six-membered chelate rings ReNC₃O are discussed. The O(Lⁿ) atoms, with three exception, are in the trans positions to the O(oxo) ligands. In the two complexes, the oxygen atoms of the acido-ligand OMe⁻ occupy the trans positions to the oxo ligands, and in the third, it is occupied by the O atom of the neutral H₂O ligand. In the case of complexes [ReO(Lⁿ)₂(L_mono)] with five-membered chelate cycles ReNC₂O, the structures of three complexes with L_mono ligands in the trans positions to oxo ligands are also known: one with L_mono = Cl⁻ and two with L_mono = OMe⁻.