366007-10-5Relevant articles and documents
Synthesis, spectral and electrochemical studies of 2-(arylazo)heterocycle complexes of zinc(II). Single-crystal X-ray structure of [Zn(papm)Cl2·CH3OH] (papm = 2-(phenylazo)pyrimidine)
Nag, Jiban Kumar,Santra, Prasanta Kumar,Sinha, Chittaranjan,Liao, Fen-Ling,Lu, Tian-Huey
, p. 2253 - 2259 (2008/10/08)
2-(Arylazo)pyridines (aap) (R-C6H4-N=N-C5H4N, 1) and 2-(arylazo)pyrimidines (aapm) (R-C6H4-N=N-C4H3N2, 2); R = H (a), o-Me (b), m-Me (c), p-Me (d), p-Cl (e) are used to synthesise title compounds. The complexes are characterised by elemental analyses, IR, UV - Vis and 1H NMR spectral data. Single-crystal X-ray structure of dichloro-{2-(phenylazo)pyrimidine}-zinc(II) methanol suggests that the complex is a distorted trigonal bipyramidal symmetric around Zn(II), and Cl(1), Cl(2), N(4) (N (azo)) make the trigonal plane. Zn(II) moves downwards by 0.12 ? from the centre of gravity of the plane. Two axial positions are occupied by N(1) (N(pyrimidine)) and methanol-O. Molecular packing shows one-dimensional infinite chain via hydrogen bonding. The EHMO calculation has been carried out to explain the electronic behaviour of the complexes and the results are compared with that of copper(I) complex.