A new convenient preparation of monocyclooctatetraenyl-lanthanide complexes from metallic lanthanides and oxidants
作者:Kazushi Mashima、Yuushou Nakayama、Akira Nakamura、Nobuko Kanehisa、Yasushi Kai、Hidemasa Takaya
DOI:10.1016/0022-328x(94)80108-8
日期:1994.6
Treatment of lanthanide metals with cyclooctatetraene in the presence of an equimolar amount of iodine afforded cyclooctatetraenyl-iodolanthanide(III) complexes, LnI(η8-cot)(thf)n. (cot = cyclooctatetraenyl; 1a: Ln La, n = 3; 1b: Ln Ce, n = 3; 1c: Ln Pr, n = 3; 1d: Ln Nd, n = 2; 1e: Ln Sm, n = 1), in modest yields. Bromo and chloro-bridged dinuclear complexes of samarium, [Sm(μ-X)(cot)(thf)]2
与环辛四烯镧系金属的治疗中得到碘环辛四烯-iodolanthanide(III)配合物的等摩尔量的存在,LNI(η 8 -cot)(THF)ñ。(cot =环辛酸酯基; 1a:LnLa,n = 3; 1b:LnCe,n = 3; 1c:LnPr,n = 3; 1d:LnNd,n = 2; 1e:LnSm ,n = 1),以适中的收益率计算。S的溴和氯桥联双核络合物[Sm(μ-X)(cot)(thf)] 2(2:XBr; 3:X XCl),也分别由sa金属与环辛酸酯在1,2-二溴乙烷或Ph 3 PCl 2存在下反应制得。金属钐与环辛四烯和二芳基二硫化物或二苯基二硒化物的THF溶液,得到钐的环辛四烯-硫醇或-selenolate复合物(III),[SM(μ-EAR)(η反应8 -cot)(THF)Ñ ] 2(图4a:EArSPh,n = 2; 4b:SC 6 H 2 Me 3 -2