The reaction of the anionic alkyl complexes of chromium and tungsten, NEt4+[(CO)5MCH(OMe)(p-C6H4R)}]–(M = Cr, R = OMe; M = W, R = OMe, Me, H) with HBF4·Et2O yields isolable, strongly electrophilic benzylidene(pentacarbonyl) complexes, (CO)5MCH(p-C6H4R); thermolysis of the tungsten compounds gives µ-benzylidenebis(pentacarbonyltungsten) complexes, [(CO)5W]2[µ-CH(p-C6H4R)].
铬和
钨的阴离子烷基络合物的反应NEt 4 + [(CO)5 M CH(OMe)(p -C 6 H 4 R)}] –(M = Cr,R = OMe; M = W ,R = OMe,Me,H),具有HBF 4 ·Et 2 O,产生可分离的,强亲电的亚苄基(五羰基)配合物,(CO)5 M CH(p -C 6 H 4 R);
钨化合物的热解得到μ-亚苄基双(
五羰基钨)络合物[(CO)5 W] 2 [μ-CH(p -C 6 H 4 R)]。