Two different coordination modes of the Schiff base derived from ortho-vanillin and 2-(2-aminomethyl)pyridine in a mononuclear uranyl complex

邻香兰素与2-(2-氨基甲基)吡啶合成的席夫碱在单核铀酰配合物中的两种不同配位模式

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作者:Sokratis T Tsantis, Zoi G Lada, Demetrios I Tzimopoulos, Vlasoula Bekiari, Vassilis Psycharis, Catherine P Raptopoulou, Spyros P Perlepes

Abstract

This work describes the reaction of the potentially tetradentate Schiff-base ligand N-(2-pyridylmethy)-3-methoxysalicylaldimine (HL) with UO2(O2CMe)2·2H2O and UO2(NO3)2· 6H2O in MeOH in the absence or presence of an external base, respectively. The product from these reactions is the mononuclear complex [UO2(L)2] (1). Its structure has been determined by single-crystal, X-ray crystallography. The anionic ligand adopts two different coordination modes (1.1011, 1.1010; Harris notation) in the complex. The new compound was fully characterized by solid-state (IR, Raman and Photoluminescence spectroscopies) and solution (UV-Vis and 1H NMR spectra, conductivity measurements) techniques.

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