La 反应反式-[Ir (PPh 3 ) 2 (CO) Cl] avec les 硅烷功能化 PPh 2 CH 2 CH 2 SiR 1 R 2 H donne des 组成 d'additions d'Ir (III)。A l'un d'eux on attribue la结构:[外消旋-羰基氯氢(二苯基膦)-2乙基)二甲基甲硅烷基](PPh 3 )Ir]
La 反应反式-[Ir (PPh 3 ) 2 (CO) Cl] avec les 硅烷功能化 PPh 2 CH 2 CH 2 SiR 1 R 2 H donne des 组成 d'additions d'Ir (III)。A l'un d'eux on attribue la结构:[外消旋-羰基氯氢(二苯基膦)-2乙基)二甲基甲硅烷基](PPh 3 )Ir]
Intramolecular rearrangement behaviour of a dihydridoiridium (<scp>III</scp>)complex for med by regiospecific ‘chelate-assisted’ hydrosilylation
作者:Mary J. Auburn、Stephen R. Stobart
DOI:10.1039/c39840000281
日期:——
Addition of PPh2CH2CH2SiMe22H to [IrH(CO)](PPh3)3}is regiospecific as evidenced by formation of a cis adduct [I[graphic omitted]Me2)(CO)(PPh3)(H)(2H)]in which 2H nuclei are initially restricted to a single co-ordination position; subsequent rearrangement whereby 2H becomes equally distributed among the two hydridic sites is intramolecular with ΔG‡298= 19.3 ± 3.2kcal mol–1(1kcal = 4.184kJ).