A dinuclear phosphite rhodium(I) complex obtained by syngas treatment of a Rh/hydroxy phosphonite olefin hydroformylation precatalyst
作者:Detlef Selent、Anke Spannenberg、Christoph Kubis、Armin Börner
DOI:10.1107/s2053229619002730
日期:2019.4.1
is acetyl acetate and 1,5‐COD is cycloocta‐1,5‐diene) at 80 °C and 20 bar of CO/H2. As a result, a nearly planar six‐membered ring structure consisting of two rhodium(I) cations and two bridging phosphorous acid diester anions was formed, namely bis[μ‐(4,8‐di‐tert‐butyl‐2,10‐dimethoxydibenzo[d,f][1,3,2]dioxaphosphepin‐6‐yl)oxy]‐1:2κ2P:O;1:2κ2O:P‐bis[6‐([1,1′‐biphenyl]‐2‐yloxy)‐4,8‐di‐tert‐butyl‐2,
发现在对铑烯烃加氢甲酰化催化剂进行的催化剂预制备程序中,羟基亚膦酸酯是不稳定的。当亚膦酸酯与[(acac)Rh(1,5-COD)](acac是醋酸乙酰基酯和1,5-COD是环辛基-1,5-二烯)在80°C和20 bar的CO / H 2。结果,形成了由两个铑(I)阳离子和两个桥连亚磷酸二酯阴离子组成的近似平面的六元环结构,即双[μ-(4,8-二叔丁基-2,10-二甲氧基二苯并[ d,˚F ] [1,3,2]二氧磷杂七-6-基)氧基] -1:2κ 2 P:ø ; 1:2κ 2 Ó:P-双[6-([[1,1'-联苯] -2-基氧基)-4,8-二叔丁基-2,10-二甲氧基二苯并[ d,f ] [1,3,2]二氧杂磷平- κ P ] carbonylrhodium(I)}甲苯四溶剂合物,铑[Rh 2(C 22 H ^ 28 ö 5 P)2(C 34 H ^ 37 ö 5 P)2(CO)2 ]·4C