Effect of the Carboxylate Shift on the Reactivity of Zinc Complexes in the Gas Phase

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• 作者：Lucie Ducha虂č ; kova虂 ; Detlef Schro虉der ; Jana Roithova虂
• 刊名：Inorganic Chemistry
• 出版年：2011
• 出版时间：April 4, 2011
• 年：2011
• 卷：50
• 期：7
• 页码：3153-3158
• 全文大小：884K
• 年卷期：v.50,no.7(April 4, 2011)
• ISSN：1520-510X

文摘

The effect of different modes of the carboxylato ligands on the reactivity of gaseous zinc鈭抋cetate complexes is reported. Using infrared multiphoton dissociation spectroscopy, it is demonstrated that the coordination of acetate in [(Imi)_nZn(CH₃COO)]⁺ complexes (Imi = imidazole, n = 1鈭?) changes from bi- to monodentate upon coordination of the third imidazole ligand. This so-called carboxylate shift substantially influences the reactivity of the zinc鈭抋cetate complexes in comparison to complexes with monodentate counterions. The differences in reactivities are demonstrated on the ligand exchange reactions of [L_nZnX]⁺ (n = 2 or 3,; L = imidazole or pyridine; X = OH, Cl, CH₃COO, and CH₃CONHO).