Mono- and tris-phenoxo-tethered N-heterocyclic carbene yttrium complexes: Syntheses and molecular structures

被引：59
作者：
Wang, Zhi-Guo
Sun, Hong-Mei
Yao, Hai-Sheng
Shen, Qi [1 ]
Zhang, Yong
机构：
[1] Suzhou Univ, Coll Chem & Chem Engn, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200433, Peoples R China
来源：
ORGANOMETALLICS | 2006年 / 25卷 / 19期
关键词：
D O I：
10.1021/om060496e
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The reaction of LiY[(NPr2)-Pr-i](4) with H2LCl (L = O-4,6-di-Bu-t-C6H2-2-CH2-[C{N(CHCH)(NPr)-Pr-i}]) and BuLi in the molar ratio of 1:3:2 at -78 degrees C affords a yttrium complex supported by three anionic NHC ligands, L3Y (1). Reaction temperature has a great effect on the reaction outcome. The same reaction at room temperature yields a monoanionic NHC yttrium complex co-supported by a bridged bisphenoxo group, LY[(O-4,6-di-Bu-t-C6H2)(2)(CH2)][(i)PrIm](2)((i)PrIm = N-isopropylimidazole) (2) formed from the cleavage of NHC.
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页码：4436 / 4438
页数：3
相关论文
共 21 条
[1]   Anionic amido N-heterocyclic carbenes: Synthesis of covalently tethered lanthanide-carbene complexes [J].
Arnold, PL ;
Mungur, SA ;
Blake, AJ ;
Wilson, C .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (48) :5981-5984
[2]   Deprotonation of N-heterocyclic carbenes to afford heterobimetallic organolanthanide complexes [J].
Arnold, PL ;
Liddle, ST .
ORGANOMETALLICS, 2006, 25 (06) :1485-1491
[3]   Regioselective C-H activation of lanthanide-bound N-heterocyclic carbenes [J].
Arnold, PL ;
Liddle, ST .
CHEMICAL COMMUNICATIONS, 2005, (45) :5638-5640
[4]   Thermally stable potassium N-heterocyclic carbene complexes with alkoxide ligands, and a polymeric crystal structure with distorted, bridging carbenes [J].
Arnold, PL ;
Rodden, M ;
Wilson, C .
CHEMICAL COMMUNICATIONS, 2005, (13) :1743-1745
[5]   4-COORDINATE LANTHANIDE DI-ISOPROPYLAMIDES - [LI(THF)LN(N(I)PR2)(4)] (LN=LA, Y, YB) [J].
ASPINALL, HC ;
TILLOTSON, MR .
POLYHEDRON, 1994, 13 (23) :3229-3234
[6]   BIS(PENTAMETHYLCYCLOPENTADIENYL)TITANIUM(II) AND ITS COMPLEXES WITH MOLECULAR NITROGEN [J].
BERCAW, JE .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1974, 96 (16) :5087-5095
[7]   Stable carbenes [J].
Bourissou, D ;
Guerret, O ;
Gabbaï, FP ;
Bertrand, G .
CHEMICAL REVIEWS, 2000, 100 (01) :39-91
[8]   Unusual reactivity of a nickel N-heterocyclic carbene complex:: tert-butyl group cleavage and silicone grease activation [J].
Caddick, S ;
Cloke, FGN ;
Hitchcock, PB ;
Lewis, AKD .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (43) :5824-5827
[9]   Redox processes involving hydrocarbylmetal (N-heterocyclic carbene) complexes and associated imidazolium salts:: ramifications for catalysis [J].
Cavell, KJ ;
McGuinness, DS .
COORDINATION CHEMISTRY REVIEWS, 2004, 248 (7-8) :671-681
[10]  
DIPTI P, 2006, CHEM COMMUN, P1124
123