Structural Features of Monomeric Octahedral Monooxo d²-Rhenium(V) Complexes [ReO(Ltetraⁿ)(Lmono)] with Tetradentate Chelate (2O, 2N) Ligands Containing Oxygen and Nitrogen Atoms (Review)

Abstract The structural features of twenty mononuclear octahedral monooxo d 2 -Re(V) complexes [ReO( $${\text{L}}_{{{\text{tetra}}}}^{n}$$ )(L mono )] with tetradentate-chelate (2O, 2N) ( $${\text{L}}_{{{\text{tetra}}}}^{n}$$ ) and monodentate (L mono ) ligands have been studied. The O( $${\text{L}}_{{{\text{tetra}}}}^{n}$$ ) atoms or monodentate ligands L mono (Н 2 О, ОR – , and Cl – ) are located in the trans positions to the multiply bound O(oxo) ligands. Geometric ( trans , cis ) isomerism in two triplets of complexes [ReO( $${\text{L}}_{{{\text{tetra}}}}^{n}$$ )(L mono )], where L mono = OR – or Cl – , have been considered.