摘要:
摘要使干燥的N 2气流通过Mo(CO)3(PR 3)2 X 2(PR 3 = PEtPh 2,PMe 2 Ph或PEt 2 Ph时,X = Br; PR 3 = PMePh 2 ,在室温下在乙腈中为X = Cl,Br或I,或在沸腾的乙腈中为W(CO)3-(PR 3)2 X 2(PR 3 = PMePh 2或PMe 2 Ph,X = Br),黄色,以高收率形成单体7-配位二羰基M(CO)2(NCMe)(PR 3)2 X 2。腈配体易于从M(CO)2(NCMe)(PR 3)2 X 2取代(M = Mo,PR 3 = PEtPh 2或PEt 2 Ph,X = Br; PR 3 = PMePh 2,X = I ; M = W,PR 3 = PMePh 2,X = Br),使剧烈的N 2气流通过这些络合物的溶液溶解在氯化或酮酮溶剂中,产生新的,高度着色的6坐标d 4 M(CO) 2(PR 3)2 X