SYNTHESIS AND DECOMPOSITION OF NEUTRAL PALLADIUM(IV) COMPLEXES CONTAINING FAC-PDME2R GROUPS, INCLUDING REDUCTIVE ELIMINATION BY ETA-1-PROPENYLPALLADIUM(IV) COMPLEXES TO FORM ETA-3-PROPENYLPALLADIUM(II) SPECIES

被引:15
作者
BYERS, PK [1 ]
CANTY, AJ [1 ]
TRAILL, PR [1 ]
WATSON, AA [1 ]
机构
[1] UNIV TASMANIA,DEPT CHEM,HOBART,TAS 7001,AUSTRALIA
基金
澳大利亚研究理事会;
关键词
D O I
10.1016/0022-328X(90)85108-B
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Oxidative addition of ethyl iodide to PdMe2(2,2′-bipyridyl) in (CD3)2CO gives the unstable "PdIMe2Et(bpy)", which undergoes reductive elimination to form PdIR(bpy) (R = Me, Et), ethane, and propane. Ethene and palladium metal are also formed, and are attributed to decomposition of PdIEt(bpy) via β-elimination. Similar results are obtained with n-propyl iodide, although a palladium(IV) intermediate was not detected, but CH2CHCH2X (X = Br, I) and PhCHCHCH2Br give isolable complexes fac-PdXMe2(CH2CHCHR)(L2) (R = H, Ph; L2 = bpy, phen). The propenyl complexes decompose at ambient temperature to form ethane, a trace of PdXMe(L2), and mixtures of [Pd(η3-C3H5)(L2)]X and [Pd(η3-C3H5)(L2)]-[Pd (η3-C3H5)X2]; for fac-PdBrMe2(CH2CHCH2)(bpy) the major palladium(II) product is [Pd(η3-C3H5)(bpy)]Br. © 1990.
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页码:399 / 407
页数:9
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