Metselaar Gerald A, Schwartz Erik, de Gelder René, Feiters Martin C, Nikitenko Serge, Smolentsev Grigory, Yalovega Galina E, Soldatov Alexander V, Cornelissen Jeroen J L M, Rowan Alan E, Nolte Roeland J M
Institute for Molecules and Materials, University of Nijmegen, 1 Toernooiveld, 6525 ED Nijmegen, The Netherlands.
Chemphyschem. 2007 Aug 24;8(12):1850-6. doi: 10.1002/cphc.200700251.
The structure of the active complex in the Ni-catalyzed polymerization of isocyanides to give polyisocyanides is investigated. It is shown by X-ray absorption spectroscopy (XAS), including EXAFS (extended X-ray absorption fine structure) and XANES (X-ray absorption near edge structure), and single-crystal X-ray diffraction, to contain a carbene-like ligand. This is the first structural characterization of a crucial intermediate in the so-called merry-go-round mechanism for Ni-catalyzed isocyanide polymerization.
研究了镍催化异腈聚合生成聚异腈过程中活性配合物的结构。通过X射线吸收光谱（XAS，包括扩展X射线吸收精细结构（EXAFS）和X射线吸收近边结构（XANES））以及单晶X射线衍射表明，其含有类卡宾配体。这是镍催化异腈聚合所谓“旋转木马”机制中关键中间体的首次结构表征。
