The matrix-isolated molecular complexes CO/XF (X=Cl,Br,I) and the molecular structure of FC(O)Br
作者:Plácido Garcı́a、Helge Willner、Heinz Oberhammer、Joseph S. Francisco
DOI:10.1063/1.1814634
日期:2004.12.15
recombine to form CO/XF complexes. The formation of complexes are followed by the shift of the normal vibration modes with respect to CO and XF isolated in argon matrix. In the case of FC(O)Br, three isomers are identified, OC...BrF, OC...FBr, and CO...BrF, whereas for FC(O)Cl only one isomer is observed, OC...ClF. High level quantum chemical calculations are used to help the assignment of the different isomers
已经合成了FC(O)Br,并分析了其在气相中并在Ar基质中分离的IR光谱以及在-196℃下的固态拉曼光谱。已确定其分子结构并已测量了UV。FC(O)Br和FC(O)Cl已通过193 nm激光在17 K的氩气基质中进行了光解离。光解产生CO和XF,它们重新结合形成CO / XF络合物。配合物的形成之后,正常振动模式相对于氩气基质中分离出的CO和XF发生了变化。在FC(O)Br的情况下,鉴定出三种异构体,即OC ... BrF,OC ... FBr和CO ... BrF,而对于FC(O)Cl,仅观察到一种异构体,即OC.。 .ClF。高级量子化学计算可用于帮助分配不同的异构体。