Derivatives of 1,10-dioxa-4,7-diaza-11-phosphacycloundecane are known to function as mono-P-donor crown ether ligands. When complexed to molybdenum or tungsten in the form of M(CO)5P derivatives they provide an additional incentive for nucleophilic attack (RLi reagents) at the C-atom of a coordinated CO via selective Li+ ion binding by the benzoylate/acylate product. The structure of one of these products
已知1,10-二氧杂-4,7-二氮杂-11-
磷酸环十一烷的衍
生物起单-P-供体
冠醚配体的作用。当以M(CO)5 P衍
生物的形式与
钼或
钨络合时,它们通过
苯甲酸酯/酰化产物的选择性Li +离子键合,为配位CO的C原子上的亲核攻击(RLi试剂)提供了额外的诱因。。这些产品中的一个所述的结构,CI - [ (OET)] - -
钼(CO)4(PhCO)→李+,已经通过X射线晶体学确定。