Crystal structures of 3/4-pyridyl-based thiosemicarbazones and related Cu and Ni coordination compounds

In this investigation, the crystal structures of the thio-ligands 3-formylpyridine 4-phenylthiosemicarbazone (C13H12N4S, 1) and 4-benzoylpyridine 4-ethylthiosemicarbazone (C15H16N4S, 2), and of two new coordination compounds, chlorido(3-formylpyridine 4-phenylthiosemicarbazone- κ S)bis(triphenylphosphane- κ P)copper(I) acetonitrile monosolvate, [CuCl(C13H12N4S)(C18H15P)2] · CH3CN, 3, and bis(3-formylpyridine 4-ethylthiosemicarbazonato- κ 2N1,S)nickel(II), [Ni(C9H11N4S)2], 4, are reported. In complex 3, the thio-ligand coordinates in a neutral form to the Cu atom through its S-donor atom, and in complex 4, the anionic thio-ligand chelates to the Ni atom through N- and S-donor atoms. The geometry of complex 3 is distorted tetrahedral [bond angles 99.70   (5) – 123.23   (5) ° ], with the P — Cu — P bond angle being the largest, while that of complex 4 is square planar, with trans-S — Ni — S and N — Ni — N bond angles of 180 ° .

Source: Acta Crystallographica Section C - December 20, 2021 Category: Chemistry Authors: Lobana, T.S. Kaushal, M. Bhatia, R. Bala, R. Butcher, R.J. Jasinksi, J.P. Tags: coordination compound thiosemicarbazone copper nickel crystal structure research papers Source Type: research