Synthesis, reactivity and X-ray crystal structure of tris(pentafluorophenyl)silanol (C6F5)3SiOH
作者:Tommaso Giovenzana、Elena Lucenti、Lucia Carlucci、Giuseppe D'Alfonso、Daniela Maggioni、Angelo Sironi、Elena Cariati
DOI:10.1016/j.ica.2021.120778
日期:2022.4
Tris(pentafluorophenyl)silanol (C6F5)3SiOH was prepared from the corresponding chlorosilane (C6F5)3SiCl by an unconventional controlled hydrolysis. The X-ray structure and the reactivity of the new silanol with various bases, with triflic acid and with some rhenium carbonyl complexes are reported. The Si-C6F5 bond is easily cleaved in the presence of even weak bases and this behaviour prevented the
三(五氟苯基)硅烷醇(C 6 F 5 ) 3 SiOH通过非常规受控水解由相应的氯硅烷(C 6 F 5 ) 3 SiCl制备。报道了新硅烷醇与各种碱、三氟甲磺酸和一些铼羰基配合物的 X 射线结构和反应性。即使存在弱碱,Si-C 6 F 5键也很容易断裂,这种行为阻止了 (C 6 F 5 ) 3 SiO -阴离子的分离和 [Re(CO) 5 COSiR 3的合成] 衍生物。特别地,当(C 6 F 5 ) 3 SiOH与丁基锂和Re(CO) 5 OSO 2 CF 3反应时,观察到[Re(CO) 5 C 6 F 5 ]的形成。