Yttrium Hydride Complex Bearing CpPN/Amidinate Heteroleptic Ligands: Synthesis, Structure, and Reactivity
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- 作者：Zhongbao Jian ; Noa K. Hangaly ; Weifeng Rong ; Zehuai Mou ; Dongtao Liu ; Shihui Li ; Alexander A. Trifonov ; J枚rg Sundermeyer ; Dongmei Cui
- 刊名：Organometallics
- 出版年：2012
- 出版时间：June 25, 2012
- 年：2012
- 卷：31
- 期：12
- 页码：4579-4587
- 全文大小：512K
- 年卷期：v.31,no.12(June 25, 2012)
- ISSN：1520-6041
文摘
The reaction of the yttrium dialkyls (C5H4鈥揚Ph2鈺怤鈥揅6H3iPr2)Y(CH2SiMe3)2(thf) (1) with an excess of N,N鈥?/i>-diisopropylcarbodiimide gave the yttrium monoalkyl complex (C5H4鈥揚Ph2鈺怤鈥揅6H3iPr2)Y(CH2SiMe3)[iPrN鈺怌(CH2SiMe3)鈥揘iPr] (2). 2 subsequently reacted with 1 equiv of PhSiH3 to generate the CpPN/amidinate heteroleptic yttrium hydride {(C5H4鈥揚Ph2鈺怤鈥揅6H3iPr2)Y[iPrN鈺怌(CH2SiMe3)鈥揘iPr](渭-H)}2 (3). Hydride 3 showed good reactivity toward various substrates containing unsaturated C鈥揅, C鈥揘, and N鈥揘 bonds, such as azobenzene, p-tolyacetylene, 1,4-bis(trimethylsilyl)-1,3-butanediyne, N,N鈥?/i>-diisopropylcarbodiimide, and 4-dimethylaminopyridine, affording the yttrium hydrazide complex 4 with a rare 畏2-Cp bonding mode, yttrium terminal alkynyl complex 5, yttrium 畏3-propargyl complex 6, yttrium amidinate complex 7, and yttrium 2-hydro-4-dimethylaminopyridyl product 8, respectively.