摘要
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 ℃ 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 complex 1 was a symmetric dimer, and the center metal y^3＋ was six-coordinated by one nitrogen atom from the amide group, two bridging oxygen atoms from the O（CH2）3CH3 groups, and one cyclopentadienyl ring in η^5-fashion to adopt a distorted tetrahedron geometry. The formation of complex 1 was postulated to be a result fxom C O bond cleavage reaction of THF.
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 ℃ 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 complex 1 was a symmetric dimer, and the center metal y^3＋ was six-coordinated by one nitrogen atom from the amide group, two bridging oxygen atoms from the O（CH2）3CH3 groups, and one cyclopentadienyl ring in η^5-fashion to adopt a distorted tetrahedron geometry. The formation of complex 1 was postulated to be a result fxom C O bond cleavage reaction of THF.
基金
Project supported by Zhejiang Provincial Natural Science Foundation (Y4090617)
Science and Technology Department of Zhejiang Province (2010R10020)
Key Laboratory of Organic Synthesis of Jiangsu Province (KJS0907)
State Key Laboratory of Rare Earth Resource Utilization (RERU2011020)
