octahedral adducts was determined by i.r. and 1H nmr spectroscopy. The stereochemical course of the addition reactions appears to be dependent on the reaction medium and on the type of the carborane anionic ligands. Evidence suggesting that these oxidative-addition reactions proceed through solvent-containing intermediates when they are carried out in coordinating solvents is reported. The HX adducts of general
双原子分子XY(XY = HCl,HBr,HI,C
L2和Br2)与通式为反式[[Ir(σ-carb)(CO)
L2]的方形d8碳
硼烷-
铱(I)配合物的加成反应,其中L = PPh3,PMePh2和carb = -2-R-1,2-和-7-R-1,已经研究了固态和溶液中的7-B10C2H10(R = H,
CH3,
C6H5)各种溶剂。所获得的八面体加合物的立体
化学通过红外光谱和1H核磁共振光谱法测定。加成反应的立体
化学过程似乎取决于反应介质和碳
硼烷阴离子
配体的类型。有证据表明,当这些氧化加成反应在配位溶剂中进行时,这些氧化加成反应会通过含溶剂的中间体进行。通式[Ir(H)(X)(σ-carb)(CO)
L2]的HX加合物,(X = Cl,Br,I),还原消除碳
硼烷分子H-carb。还描述了控制这些消除反应的因素。