Formation of anionic carbonylrhodium complexes from Wilkinson's complex under conditions of hydroformylation of formaldehyde
作者:N. N. Ezhova、G. A. Korneeva、V. I. Kurkin、M. P. Filatova、E. V. Slivinsky
DOI:10.1007/bf00696912
日期:1995.5
2;y=1, 0) and [Rh(CO)4]−, which are the centers of formaldehyde hydroformylation, are produced in noticeable quantities when 100 % DMAA is used as a solvent. Separate steps of the formation of anionic complexes from RhCl(PPh3)3 have been identified. Under the conditions of hydroformylation of formaldehyde, CH2O participates in the formation of the anionic complexes, along with DMAA.
摘要 由 Wilkinson 配合物 RhCl(PPh3)3 形成的羰基铑配合物的组成和转化动力学,溶解在均三甲苯-N,N-二甲基乙酰胺 (DMAA) 混合物中,其中 DMAA 浓度从 0 到 100 %,在合成气 $$p_\textCO + H}}_\text2}} } $$ = 6 MPa,T=373 K) 通过红外光谱进行原位研究。阴离子配合物 [Rh(CO)2(PPh3)x(DMAA)y]− (x=1, 2;y=1, 0) 和 [Rh(CO)4]−,它们是甲醛加氢甲酰化的中心, 当使用 100% DMAA 作为溶剂时,会大量生产。已经确定了从 RhCl(PPh3)3 形成阴离子复合物的单独步骤。在甲醛的加氢甲酰化条件下,CH2O 与 DMAA 一起参与阴离子配合物的形成。