Transition metalcarbon bonds: LV. Cyclometallation and other reactions of PBut2Bui and PPh2Bui with platinum(II) and palladium(II) |
| |
Authors: | Andrew RH Bottomley Christopher Crocker Bernard L Shaw |
| |
Institution: | School of Chemistry, The University, Leeds LS2 9JT Great Britain |
| |
Abstract: | The new phosphine, PBut2Bui (L), was prepared from But2PCl and LiBui. PPh2Bui (L′) was prepared from Ph2PCl and LiBui. Treatment of PtCl2(NCBut)2] with L′ gives PtCl2L′2] which does not cyclometallate even on prolonged boiling in 2-methoxyethanol. In contrast, PtCl2(NCBut)2] reacts with PBut2Bui in boiling 2-methoxyethanol to give the cyclometallated complex 2)2] (II, X = Cl). The corresponding bromide, iodide and acetylacetonate were prepared. With PPh3 II (X = Cl) gives 2)(PPh3)] which with NaBH4 gives H2)(PPh3)]. Na2PdCl4 with L (2 mol equivalents) gave trans-PdCl2L2], which was converted into trans-Pd(NCS)2-L2] by metathesis with KSCN. Treatment of Na2PdCl4 with L (1 mol equivalent) gave Pd2Cl4L2], which on heating in 2-methoxyethanol gave 2)2], as a mixture of syn- and anti-isomers. The complexes trans-PdCl2-L′2] and Pd2Cl4L′2] were also prepared. 1H- and 31P NMR data are given. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|