Synthesis and Crystal Structure of [(ArO)_2Sm-(OPPh_3)(μ-OH)]_2(ArO = 2,6-~tBu-4-Me-C_6H_2O)  

作　　者：姚英明 张可达 喻龙宝 沈琪 雷玉叶 孙杰 

机构地区：[1]Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China [2]Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, Shanghai 200032, China

出　　处：《Chinese Journal of Structural Chemistry》2003年第2期143-146,共4页结构化学（英文）

基　　金：Financially supported by NNSFC (20072027); the Education Department of Jiangsu province and the Key Laboratory of Organic Synthesis of Jiangsu province

摘　　要：The title complex, [(ArO)2Sm(OPPh3)(m-OH)]2 (ArO = 2,6-tBu2-4-Me-C6H2O), was obtained by the hydrolysis reaction of divalent samarium aryloxide, Sm(ArO)2(THF)4, in the presence of triphenylphosphine oxide (OPPh3) in toluene. Crystal data: C96H124O8P2Sm2, Mr = 1768.77, monoclinic, space group P21/n, a = 15.276(6), b = 19.406(9), c = 19.320(7) ? b = 108.59(2), V = 5428(3) 3, Z = 2, Dc = 1.081 g/cm3, F(000) = 1836, T = 293 K, l(MoKa) = 0.71069 ?and m = 11.47 cm-1. The final R = 0.072 and wR = 0.092 for 2456 observed reflections with I ≥ 3s(I). The molecule has a dimeric structure with two centrosymmetric hydroxyl bridges. The samarium atom is coordinated by five oxygen atoms to form a distorted square-pyramid geometry with the average SmO(Ar) distance of 2.18 ?The title complex, [(ArO)2Sm(OPPh3)(m-OH)]2 (ArO = 2,6-tBu2-4-Me-C6H2O), was obtained by the hydrolysis reaction of divalent samarium aryloxide, Sm(ArO)2(THF)4, in the presence of triphenylphosphine oxide (OPPh3) in toluene. Crystal data: C96H124O8P2Sm2, Mr = 1768.77, monoclinic, space group P21/n, a = 15.276(6), b = 19.406(9), c = 19.320(7) ? b = 108.59(2), V = 5428(3) 3, Z = 2, Dc = 1.081 g/cm3, F(000) = 1836, T = 293 K, l(MoKa) = 0.71069 ?and m = 11.47 cm-1. The final R = 0.072 and wR = 0.092 for 2456 observed reflections with I ≥ 3s(I). The molecule has a dimeric structure with two centrosymmetric hydroxyl bridges. The samarium atom is coordinated by five oxygen atoms to form a distorted square-pyramid geometry with the average SmO(Ar) distance of 2.18 ?

关 键 词：LANTHANIDE SAMARIUM ARYLOXIDE crystal structure 

分 类 号：O614.337[理学—无机化学]