Synthesis and EXAFS investigation of azomethynic copper metallochelates with an N,N,O ligand environment

摘要

Neutral copper complexes of different composition (CuL_2~1 and CuL~2OAc) and structure were obtained by coupling the 1-phenyl(isopropyl)-3-methyl-4-(N-substituted)aldimino-5-oxy(thio,seleno)pyrazoles(HL~1),and 2-hydroxy9tosylamino)-N-(8-quinolyl)benzaldimine (HL~2) with copper(II) acetate. According to x-ray structural data, the CuL_2~1 complexes possessthe pseudotetrahedral structure, and the CuL~2OAc complexes, the square-pyramidal one. the complexes were studied by EXAFS spectroscopy.EXAFS spectral data on the nearest ligand environment show a good correlation with the X-ray structural results.