Abstract
The mono- and binuclear complexes Ni(Salen) (I) and Ni2(Salen)2 (II) (H2Salen = N,N′-bis(salicylidene)ethane-1,2-diamine), have been synthesized and structurally characterized by single-crystal X-ray diffraction studies. The X-ray structural analyses show that the metal center of complex I is mononuclear and tetracoordinate with a distorted tetrahedron, whereas the metal-centered complex II is binuclear and pentacoordinate with rectangular pyramid geometries, respectively. The electrochemical studies evidenced for the mononuclear Ni(II) complex shows one quasireversible reduction potential at −0.80 V (E pc ) and the binuclear Ni(II) complex shows a reduction potential at −0.90 V (E pc ) in the cathodic region.
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