SYNTHESIS AND CHARACTERIZATION OF ENYNYL, VINYL AND ACETYLIDE COMPLEXES OF OSMIUM(II)

被引：18
作者：
ALBERTIN, G
ANTONIUTTI, S
BORDIGNON, E
机构：
来源：
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1995年 / 05期
关键词：
D O I：
10.1039/dt9950000719
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Treatment of [OsH(2)L(4)] [L = P(OEt)(3) or PPh(OEt)(2)] first with CF(3)SO(3)Me and then with an excess of terminal alkynes RC-CM (R = Bu(t), Ph or p-MeC(6)H(4)) produced enynyl derivatives [Os{eta(3)-RC(3)C(H)R}L(4)](+) 1-3. Sequential reactions of [OsH(2)L(4)] with CF(3)SO(3)Me and activated alkynes R'O2CC=CH (R' = Me or Et) or MeO(2)CC=CCO(2)Me yielded alkenyl [Os{CH=C(H)CO(2)R')L(4)](+) 4,5 and [Os{C(CO(2)Me)=C(H)CO2- Me}L(4)](+) 6 cations, respectively. Spectroscopic data (IR, H-1, P-31, C-13 NMR) suggest, in the case of L = P(OEt)(3), the presence of two isomers for the alkenyls 4 and 5, with five- and four-membered, chelate rings of the vinyl ligand. Hydride-alkynyl [OsH(C=CPh)L(4)] complexes were also obtained by treating[OsH(2)L(4)] with CF(3)SO(3)Me followed by treatment with lithium phenylacetylide.
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页码：719 / 725
页数：7
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