Incorporation of phenyl-substituted pentadienyl ligands in (pentamethylcyclopentadienyl)ruthenium complexes †
作者:Vichien Kulsomphob、Gregory C. Turpin、Kin-Chung Lam、Chris Youngkin、Wimonrat Trakarnpruk、Pat Carroll、Arnold L. Rheingold、Richard D. Ernst
DOI:10.1039/b003001p
日期:——
The reactions of the [Ru(C5Me5)Cl]4 tetramer with 2,4-diphenylpenta-1,3-diene or 3-phenyl- or 1,5-diphenyl-substituted pentadienyl anions lead to the incorporation of the expected phenyl-substituted pentadienyl ligands into the respective symmetric Ru(C5Me5)(Pdl) products (Pdl = 2,4-Ph2C5H5; 3-PhC5H6; 1,5-Ph2C5H5). The reaction of the tetramer with a mixture of 2-methyl-4-phenylpenta(-1,3- or -2,4-)dienes led to the Pdl = 2-Me-4-PhC5H5 complex. In contrast, the reaction of the tetramer with 3-phenylpenta-1,3-diene led to simple incorporation of the η4-diene ligand. Structural confirmation of the formulations of the four η5-pentadienyl complexes has been achieved, allowing for a number of comparisons to be made regarding the structural effects of phenyl substitution on the (1,5), (2,4) and 3 positions of the open dienyl ligand.
Ru(C5Me5)Cl]4 四聚体与 2,4-二苯基戊-1,3-二烯或 3-苯基或 1,5-二苯基取代的戊二烯阴离子反应,导致预期的苯基取代的戊二烯配体加入到各自的对称 Ru(C5Me5)(Pdl) 产物中(Pdl = 2,4-Ph2C5H5;3-PhC5H6;1,5-Ph2C5H5)。四聚体与 2-甲基-4-苯基五(-1,3-或-2,4-)二烯混合物反应生成 Pdl = 2-Me-4-PhC5H5 复合物。相反,四聚体与 3-苯基戊-1,3-二烯反应时,只需简单地加入η4-二烯配体。对四种 η5-戊二烯配合物的配方进行了结构确认,从而可以对苯基取代对开放二烯配体的 (1,5)、(2,4) 和 3 个位置的结构影响进行比较。