2-bis(diphenylphosphino)ethane) (85%). Treatment of complexes 2a,2b with 1.1 equiv of potassium fluoride in a 50/50 CH3OH/THF mixture at 20 °C afforded the terminal butadiyne complex (η5-C5R5)Fe(CO)2(C⋮CC⋮CH) (R = Ph, 3a; R = Me, 3b), isolated in 85 and 95% yields respectively. Complex 3c was obtained by reaction of 2c with 0.2 equiv of Bun4NF in THF (95%). The mononuclear complexes 2a−c and 3a−c were characterized by
络合物的Fe(η 5 -C 5 - [R 5)(CO)2(C⋮CC⋮CSiMe 3)(R = PH,图2a ; R = Me中,图2b)从(η的反应获得5 -C 5博士5)的Fe(CO)2 Br(上1A)或(CP *)的Fe(CO)2 I(*的CP =η 5 -C 5我5,图1b)与我3的SiC⋮CC⋮CLI(1.05当量)的THF在-80°C(70-75%)下。的丁二络合物(η 5 -C 5我5)的Fe(
DPPE)(C⋮CC⋮CSiMe 3在
DPPE(1,2-双(
二苯基膦基)
乙烷)(85%)存在下,将2b在
甲苯/
乙腈混合物(95/5 v / v)中进行光解,制得(2c)。复合物的治疗图2a,2b中,在50/50的CH 1.1当量的
氟化
钾3 OH / THF混合物在20℃下,得到终端
丁二炔复合物(η 5 -C 5 - [R 5)的Fe(CO)2(C⋮CC = CH)(R = Ph,3a; R