fragments. In the presence of BF4- as external anion, fluoride abstraction competes with carbonylation to yield the neutral fluorophosphide hydrides [Mo2Cp2(mu-H)(mu-PFR)(CO)4]. Similar results were obtained in the protonation reactions of the hydride compounds having a Ph substituent on phosphorus. In that case, using HCl as protonation reagent gave the chloro-complex [Mo2ClCp2(mu-PHPh)(CO)4] in good
具有庞大取代基的新
氢化物配合物[Mo2Cp2(mu-H)(mu-PHR)(CO)4](R = 2,4,6-C(6)H2tBu3 = Mes *,R = 2,4,6-通过向三键结合的[Mo2Cp2(CO)4]中添加Li [PHR]并进一步质子化生成的阴离子
磷化物络合物[Mo2Cp2(mu-PHR)(CO)4]-,可以高收率制备C6H2Me3 = Mes)- 。用[H(OEt2)2] [B 3,5-
C6H3(
CF3)2} 4]或
HBF4使Mes *化合物质子化。OEt2得到阳离子次膦化合物[Mo2Cp2(mu-H)(mu-PMes) *)(CO)4] +的高收率。相反,在
磷上具有Mes或Cy取代基的类似
氢化物的质子化反应会生成相应的不饱和四羰基[Mo2Cp2(mu-PHR)(CO)4] +,该四羰基在室温下不稳定,并显示出顺式几何形状。后者的分解得到电子精确的五羰基化合物[Mo2Cp2(mu-PHR)(mu-CO)(CO)4]