Syntheses and structures of bowl-shaped triarylphosphines and their palladium(II) complexes
作者:Yoshiko Ohzu、Kei Goto、Hiroyuki Sato、Takayuki Kawashima
DOI:10.1016/j.jorganchem.2005.06.025
日期:2005.9
m-terphenyl units. Its cone angle was estimated to be as large as 174°. In the crystal structure of TRIP, the depth of the cavity and cone angle increased to 3.3 Å and 206°, respectively, because of the different arrangement of the m-terphenyl units. In contrast with TRMP, which can form the mononuclear complex, PdCl2(TRMP)2 (6), in the reaction with PdCl2, treatment of TRIP (1 or 3 eq.) with PdCl2 produced
新型碗形三芳基膦,三(2,2“,6,6”-四烷基[1,1':3',1“-三联苯基] -5'-基)膦(TRMP:烷基=甲基; TRIP:烷基) =异丙基),分别用对应的锂化制备米三联苯溴化物,接着用反应的PCl 3。X射线晶体分析揭示,TRMP的磷中心被嵌入在由三个径向延伸的形成16的直径和2.1埃深度的浅碗形腔米三联苯单元。它的锥角估计为174°。在TRIP的晶体结构中,由于m的排列不同,腔的深度和锥角分别增加到3.3Å和206°。-三苯基单元。与TRMP,能够形成单核配合物,的PdCl对比2(TRMP)2(6),在与的PdCl反应2,治疗TRIP(1个或3当量)与的PdCl 2制备的三核钯(II),氯化配合物[(PdCl 2)3(TRIP)2 ](8)作为单一产品。X射线晶体学确定了8的结构,其中PdCl 2的三聚体被两个TRIP配体终止。根据TRMP和TRIP的腔形差异,解释了不同类型的PdCl