کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1334466 1500258 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of Au(I) and Au(III) complexes containing N-heterocyclic ligands derived from amino acids
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis and characterization of Au(I) and Au(III) complexes containing N-heterocyclic ligands derived from amino acids
چکیده انگلیسی

A series of [Au(NHC)2] (1a–4a) complexes supported by NHC ligands derived from glycine, alanine, methionine and phenylalanine (1–4 respectively) were prepared via a direct transmetalation reaction of their respective silver complexes. The Au complexes were characterized by ESI-MS and NMR spectroscopy in solution. These compounds exhibit instability when the solvent is removed; they displayed a strong tendency to form colored solutions in the order 4a > 3a > 2a > 1a, which is associated with gold nanoparticles. 1a and 2a undergo oxidative addition of elemental bromine, yielding [Au(NHC)2Br2] (1b) for 1a and a mixture of [Au(NHC)2Br2] (2b) and [Au(NHC)Br3] (2c) for 2a. 2b and 2c were characterized by single crystal X-ray diffraction.

A family of water soluble gold(I) complexes with NHC carbene ligands derived from amino acids were prepared via the direct transmetalation reaction of the respective silver NHC complexes. The oxidative addition of Br2 to Au(I)-NHC complexes was studied and the crystal structure of [AuBr3(NHC)] compound derived from alanine is presented.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 81, 15 October 2014, Pages 564–571
نویسندگان
, , , , , , , ,