Please use this identifier to cite or link to this item: https://doi.org/10.1021/om049911y
Title: Crystallographic characterization of a palladium(II) metallamacrocycle supported by an amino-functionalized ferrocene and its use as an efficient Suzuki-coupling catalyst
Authors: Weng, Z. 
Teo, S.
Koh, L.L. 
Hor, T.S.A. 
Issue Date: 19-Jul-2004
Source: Weng, Z., Teo, S., Koh, L.L., Hor, T.S.A. (2004-07-19). Crystallographic characterization of a palladium(II) metallamacrocycle supported by an amino-functionalized ferrocene and its use as an efficient Suzuki-coupling catalyst. Organometallics 23 (15) : 3603-3609. ScholarBank@NUS Repository. https://doi.org/10.1021/om049911y
Abstract: Complexation of the bidentate ferrocenylamine [η-C 5H 4(CH 2)2N(CH 3)2]2Fe (1) with PdCl 2--(MeCN) 2 in MeOH at room temperature gives air-stable Pd 2Cl 4{Fe[η-C 5H 4(CH 2)2N(CH 3)2]}2 (2; yield 71%) of limited solubility in common organic solvents. X-ray single-crystal diffraction analyses showed that 2 has self-assembled into a metallamacrocyclic structure comprising two trans palladium(II) atoms intercalated with two eclipsed bis[(2-(dimethylamino)ethyl)- cyclopentadienyl]ferrocene groups, thus forming a {Pd 2Fe 2} heterometallic molecular "rectangle". Chloride abstraction with NH 4PF 6 leads to decomplexation, giving {[η-C 5H 4- (CH 2)2N(CH 3)2H] 2Fe}{PF 6}2 (3), which is the protonated form of 1. Complex 2 effectively catalyzes Suzuki cross-coupling reactions of aryl bromides with aryl boronic acids in MeOH at room temperature and 60°C, giving generally high yields even under low catalytic loads. The reaction conditions are reported together with comparison with other common catalysts.
Source Title: Organometallics
URI: http://scholarbank.nus.edu.sg/handle/10635/93504
ISSN: 02767333
DOI: 10.1021/om049911y
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