Synthesis, characterization and structures of copper(II) and cobalt(II) complexes involving N3S-coordinated tetradentate ligand and azide/ thiocyanate/ nitrite ion

Mononuclear copper(II) complexes [Cu(bdmpe)X]Y, cobalt(II) complex [Co(bdmpe)(NCS)2] and binuclear cobalt(II) complexes [Co(bpmpe)(N3)]2Y2, where X = NCS− or NO2, Y = PF6− or ClO4− have been synthesized with N3S-coordinating ligand N,N-bis((3,5-dimethyl-1H-pyrazol-1-yl)methyl)-2-(phenylthio)ethan-1-amine(bdmpe) and co-ligands NCS−/NO2−/N3− and characterized. Single crystal X-ray data confirmed that the copper(II) complexes [Cu(bdmpe)X]ClO4 [X = NCS, NO2] are five coordinated with distorted square pyramidal geometry, complex [Co(bdmpe)(NCS)2] is five coordinated with distorted trigonal bipyramidal geometry and binuclear cobalt(II) complex [Co(bpmpe)(N3)]2(ClO4)2 has distorted octahedral geometry where the two cobalt center is bridged by two azide ions with end-on coordination mode.255