作者:Simon J. Coles、Sarah J. Fieldhouse、Wim T. Klooster、Andrew W.G. Platt
DOI:10.1016/j.poly.2019.01.031
日期:2019.3
Abstract The reactions of ammonium cerium(IV) nitrate, (NH4)2Ce(NO3)6 (CAN) with trialkylphosphine oxides, R3PO (R= Et, iPropyl, nBu3, iBu3PO, tBu3PO, Cy3PO (Cy = cyclohexyl) and Oct3PO (Oct = n-octyl)) have been investigated by 31-P NMR spectroscopy in a variety of conditions. Reactions with acetone solutions of excess of CAN and R3PO and of solid CAN with chloroform solutions of R3PO and aqueous
摘要硝酸铈铈(IV),(NH4)2Ce(NO3)6(CAN)与三烷基氧化膦,R3PO(R = Et,iPropyl,nBu3,iBu3PO,tBu3PO,Cy3PO(Cy =环己基)和Oct3PO(Oct)的反应=正辛基))已经通过31-P NMR光谱在各种条件下进行了研究。与过量的CAN和R3PO的丙酮溶液以及固体CAN与R3PO的氯仿溶液反应以及CAN的水溶液与R3PO的氯仿溶液反应导致观察到Ce(NO3)4(R3PO)2。用R3PO进行的31-P NMR光谱和电导滴定CAN的丙酮溶液证实了最初的反应是Ce(NO3)4(R3PO)2的形成(R = Et,Bu,Cy,Oct),然后缓慢反应形成离子性[Ce(NO3)3(R3PO)3] [NO3]。在大多数情况下,不可能分离出纯铜化合物,但在某些情况下会提取出适合x射线分析的晶体。Ce(IV)配合物[Ce(NO3)4(Cy3PO)2]和[Ce(NO3)3(Et3PO)3]