Synthesis and crystal structure of [Y(C_5Me_4SiMe_3){μ-O(CH_2)_3CH_3}{N(SiHMe_2)_2}]_2

• 作 者: 罗云杰 冯晓莹
• 机 构: Organometallic Chemistry Laboratory,Ningbo Institute of Technology,Zhejiang University,Department of
• 出 处: Journal of Rare Earths
• 发表日期: 2011年01期
• 关键词: amide symmetric coordinated adopt distorted bridging yttrium toluene molar hexan

A dimeric yttrium complex [Y(C5Me4SiMe3){μ-O(CH2)3CH3}{N(SiHMe2)2}]2 (1) was isolated as one of the byproducts from the reaction of Y{N(SiHMe2)3}3(THF)2 with C5Me4HSiMe3 in 1:1.1 molar ratio in toluene at 100 C for 2 d.Complex 1 was characterized by elemental analysis,NMR spectroscopy,FT-IR spectroscopy,and X-ray single crystal structure analysis.X-ray diffractions revealed that com-plex 1 was a symmetric dimer,and the center metal Y3+ was six-coordinated by one nitrogen atom from the amide group,two bridging oxy-gen atoms from the O(CH2)3CH3 groups,and one cyclopentadienyl ring in 5-fashion to adopt a distorted tetrahedron geometry.The forma-tion of complex 1 was postulated to be a result from C-O bond cleavage reaction of THF.

A dimeric yttrium complex [Y (C5Me4SiMe3) {μ-O (CH2) 3CH3} {N (SiHMe2) 2} was isolated as one of the byproducts from the reaction of Y {N (SiHMe2) 3} 3 (THF) 2 with C5Me4HSiMe3 in 1: 1.1 molar ratio in toluene at 100 C for 2 d. Complex 1 was characterized by elemental analysis, NMR spectroscopy, FT-IR spectroscopy, and X-ray single crystal structure analysis. X- ray diffractions revealed that com-plex 1 was a symmetric dimer, and the center metal Y3 + was six-coordinated by one nitrogen atom from the amide group, two bridging oxy-gen atoms from the O (CH2) 3CH3 groups, and one cyclopentadienyl ring in 5 -fashion to adopt a distorted tetrahedron geometry. The forma-tion of complex 1 was postulated to be a result from CO bond cleavage reaction of THF.