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The Real Structure of Pd(OAc)2 in Various Solvents†
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-09-24 , DOI: 10.1002/cjoc.202000483
Dongchao Zhang 1 , Dali Yang 1 , Shengchun Wang 1 , Li Zeng 1 , Jie Xin 1 , Heng Zhang 1 , Aiwen Lei 1, 2
Affiliation  

Pd(OAc)2 is an extensively utilized palladium source in the palladium initiated transformations either directly or as a catalyst precursor. However, the comprehension of the real structure of Pd(OAc)2 in solution is still vague. In this work, the structure of palladium acetate in solution was studied in detail by using X‐ray absorption fine structure (XAFS) spectroscopy. The results demonstrate that monomer is the main form for Pd(OAc)2 in the solution of 1,4‐dioxane, N,N‐dimethylacetamide (DMA), N,N‐dimethylformamide (DMF), 1,2‐dimethoxyethane (DME), MeCN and dimethyl sulfoxide (DMSO). In addition, Pd(II) could be reduced to Pd(0) in ethanol solution. The structural information in this research will benefit the understanding of the mechanism of Pd(OAc)2 involved organic reactions.image

中文翻译:

各种溶剂中Pd(OAc)2的真实结构†

Pd(OAc)2是直接或作为催化剂前体在钯引发的转化中广泛使用的钯源。但是,对溶液中Pd(OAc)2的真实结构的理解仍然很模糊。在这项工作中,使用X射线吸收精细结构(XAFS)光谱详细研究了溶液中乙酸钯的结构。结果表明,单体是1,4-二恶烷,NN-二甲基乙酰胺(DMA),NN溶液中Pd(OAc)2的主要形式。-二甲基甲酰胺(DMF),1,2-二甲氧基乙烷(DME),MeCN和二甲基亚砜(DMSO)。此外,在乙醇溶液中,Pd(II)可以还原为Pd(0)。在这项研究中的结构信息将有助于理解Pd(OAc)2参与有机反应的机理。图片
更新日期:2020-09-24
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