Tetrahedral nickel nitrosyl complexes with tripodal [N-3] and [Se-3] donor ancillary ligands: structural and computational evidence that a linear nitrosyl is a trivalent ligand

摘要

Linear nickel nitrosyl compounds supported by tridentate nitrogen and selenium ligands, namely the tris(3,5-dimethylpyrazolyl)hydroborato and tris(2-seleno-1-mesitylimidazolyl)hydroborato complexes, [Tp(Me2)]NiNO and [Tse(Mes)]NiNO, have been synthesized and structurally characterized by X-ray diffraction. Computational studies demonstrate that the linear nitrosyl ligand behaves as a trivalent (X) over bar3 ligand such that the Ni-N interaction has multiple bond character.