N-heterocyclic pincer dicarbene complexes of iron(II): C-2 and C-5 metalated carbenes on the same metal center

被引:197
作者
Danopoulos, AA [1 ]
Tsoureas, N [1 ]
Wright, JA [1 ]
Light, ME [1 ]
机构
[1] Univ Southampton, Dept Chem, Southampton SO17 1BJ, Hants, England
关键词
D O I
10.1021/om0341911
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Six- and five-coordinate Fe(II) complexes with the pincer ligand 2,6-bis(imidazolylidene)pyridine (C-N-C), [(C-N-C) Fe(MeCN)(3)][BPh4](2) and [(C-N-C)FeBr2], respectively, were synthesized. Substitution of tmeda in [FeCl2(tmeda)](2) by C-N-C gave the six-coordinate {[Fe(C-N-C)(C-N-C*)][FeCl4]}, in which one of the pincer ligands is bound to the metal via the 2- and 5-imidazole carbons.
引用
收藏
页码:166 / 168
页数:3
相关论文
共 26 条
[11]   Synthesis and structural characterisation of stable pyridine- and phosphine-functionalised N-heterocyclic carbenes [J].
Danopoulos, AA ;
Winston, S ;
Gelbrich, T ;
Hursthouse, MB ;
Tooze, RP .
CHEMICAL COMMUNICATIONS, 2002, (05) :482-483
[12]   Homoleptic carbene complexes Part VIII.: Hexacarbene complexes [J].
Fränkel, R ;
Kernbach, U ;
Bakola-Christianopoulou, M ;
Plaia, U ;
Suter, M ;
Ponikwar, W ;
Nöth, H ;
Moinet, C ;
Fehlhammer, WP .
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2001, 617 (01) :530-545
[13]  
GOOTH G, 1962, J CHEM SOC, P2099
[14]   Bis-carbene complexes from oxidative addition of imidazolium C-H bonds to palladium(0) [J].
Gründemann, S ;
Albrecht, M ;
Kovacevic, A ;
Faller, JW ;
Crabtree, RH .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2002, (10) :2163-2167
[15]   Abnormal ligand binding and reversible ring hydrogenation in the reaction of imidazolium salts with IrH5(PPh3)2 [J].
Gründemann, S ;
Kovacevic, A ;
Albrecht, M ;
Faller, JW ;
Crabtree, RH .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (35) :10473-10481
[16]   Tridentate carbene CCC and CNC pincer palladium(II) complexes: Structure, fluxionality, and catalytic activity [J].
Grundemann, S ;
Albrecht, M ;
Loch, JA ;
Faller, JW ;
Crabtree, RH .
ORGANOMETALLICS, 2001, 20 (25) :5485-5488
[17]   A chelating triscarbene ligand and its hexacarbene iron complex [J].
Kernbach, U ;
Ramm, M ;
Luger, P ;
Fehlhammer, WP .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1996, 35 (03) :310-312
[18]   A novel route towards formylated 1,3-dithiole-2-thiones via an unprecedented allylic 1,4-diol rearrangement [J].
Khan, T ;
Skabara, PJ ;
Coles, SJ ;
Hursthouse, MB .
CHEMICAL COMMUNICATIONS, 2001, (04) :369-370
[19]   Counter-ion effects switch ligand binding from C-2 to C-5 in kinetic carbenes formed from an imidazolium salt and IrH5(PPh3)2 [J].
Kovacevic, A ;
Gründemann, S ;
Miecznikowski, JR ;
Clot, E ;
Eisenstein, O ;
Crabtree, RH .
CHEMICAL COMMUNICATIONS, 2002, (21) :2580-2581
[20]   Palladium complexes with tridentate pincer bis-carbene Ligands as efficient catalysts for C-C coupling [J].
Loch, JA ;
Albrecht, M ;
Peris, E ;
Mata, J ;
Faller, JW ;
Crabtree, RH .
ORGANOMETALLICS, 2002, 21 (04) :700-706