Naphthylazoimidazole and mercury(II) complexes. Single crystal X-ray structure of 1-ethyl-2-(naphthyl-α-azo)imidazolium hexaflurophosphate
摘要:
1-Alkyl-2-(naphthyl-(alpha/beta)-azo)imidazole [alpha-NaiR (2)/beta-NaiR (3); R =Me (a), Et (b), CH2Ph (c)] are N,N'-bidentate chelating ligands. The structure of 1-ethyl-2-(naphthyl-alpha-azo)imidazolium hexaflurophosphate has been confirmed by single crystal X-ray structure study and shows supramolecular geometry through non-covalent interactions (C-(HF)-F-..., C-H(...)pi, pi(...)pi TC). Mercury(II) complexes of the formula Hg(NaiR)Cl-2 (4/5) have been synthesised and characterised by spectral (IR, UV-Vis and H-1 and C-13 NMR) studies. alpha-NaiR has been used to synthesise organomercury derivatives, Hg(alpha-NaiR-H)Cl (6) and the site of mercuration has been supported by charge density calculation using a semi-empirical PM3 technique. (C) 2003 Elsevier Science Ltd. All rights reserved.