Synthesis and crystal structure of [Y（C5Me4SiMe3）{μ-O（CH2）3CH3} {N（SiHMe2）2}}2

• Published in: Journal of rare earths 2011, Vol.29 (1), p.24-27
• Main Author: 罗云杰 冯晓莹
• Format: Article
• Language: English
• Subjects: CH2; X射线衍射; 四氢呋喃; 晶体结构; 核磁共振光谱; 氮原子; 钇配合物
• ISSN: 1002-0721; 2509-4963

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.