Catalytic transesterification reactions of one-dimensional coordination polymers containing paddle-wheel-type units connected by various bridging ligands

Title
Catalytic transesterification reactions of one-dimensional coordination polymers containing paddle-wheel-type units connected by various bridging ligands
Authors
황인홍조영단김현김경범정광덕김철김영미김성진
Keywords
Transesterification; Coordination polymers; Cu(II) comoplexes; Catalyst; Coordination chemistry
Issue Date
2013-06
Publisher
Inorganica chimica acta
Citation
VOL 402, 39-45
Abstract
The paddle-wheel dinuclear unit consists of two CuII ions bridged by four benzoate ligands, and these paddle-wheel [Cu2(O2CPh)4] units are connected by various bridging ligands to form one-dimensional chained compounds formulated as [Cu2(O2CPh)4(μ-L)] (L = 2,4-bpe (1), 3,3’3′-dipicam (3), 2,5-Me2pyz (4), pyz (5), 4,4’4′-bpy (6), and 4-pds (7)). The compound 2, formulated as [[Cu2(O2CPh)4][Cu(O2CPh)2](μ-bpp)2], consists of alternating units of [Cu2(O2CPh)4] and [Cu(O2CPh)2] connected by via bpp. Compounds 1–5 and 7 efficiently catalyzed the transesterification of a variety of esters, while it has been reported that Cu-containing complexes or coordination polymers do not usually show catalytic activities for the transesterification reactions. Among these compounds, 2 was most effective. It has been proposed that in the transesterification reaction, a mononuclear type of Cu complex might be the major species of compound 2 in solution, while for all other compounds, a paddle-wheel unit might be the major reactive species.
URI
http://pubs.kist.re.kr/handle/201004/46486
ISSN
00201693
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KIST Publication > Article
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