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Polymers 2011, 3(3), 1029-1035; doi:10.3390/polym3031029

Observation of Long-Range Vicinal Effect in Chiral Cu(II)-Cr(VI) or Cu(II)-W(VI) Bimetallic Coordination Polymers

 and *
Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
* Author to whom correspondence should be addressed.
Received: 13 May 2011 / Revised: 17 June 2011 / Accepted: 28 June 2011 / Published: 29 June 2011
(This article belongs to the Special Issue Coordination Polymers)
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We have prepared some diastereomers of [CuL2][M2O7] (L is 1,2-diaminocyclohexane and its derivatives; M = Cr and W) bimetallic coordination polymers and confirmed their structural similarity and inner electronic states by means of XRD and XAS, respectively. For the first time, we have successfully observed distant vicinal effect of which the chiral source is only chiral organic ligands of [CuL2]2+ moieties (acting as ligand complex), while probe bands for solid state CD spectra are charge transfer (CT) bands of [M2O7]2− moieties (achiral complex) with the d0 electronic configuration. The new concept (interpretation) of this observation will be important for supramolecular chirality of coordination polymers built by ligand complexes.
Keywords: chirality; copper; CD; XRD; XAS chirality; copper; CD; XRD; XAS
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Hayashi, N.; Akitsu, T. Observation of Long-Range Vicinal Effect in Chiral Cu(II)-Cr(VI) or Cu(II)-W(VI) Bimetallic Coordination Polymers. Polymers 2011, 3, 1029-1035.

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