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Issue 11, 2007
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Preparation and characterization of two chiral Au(CN)2-based coordination polymers containing (1R,2R)-N,N′-dimethylcyclohexanediamine

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Abstract

Two chiral heterometallic coordination polymers have been prepared using enantiopure 1R,2R-(N,N′)-bismethylcyclohexanediamine (Me2cydm) as an ancillary ligand along with copper(II) cations and KAu(CN)2. The resultant polymers, Cu(Me2cydm)[Au(CN)2]2 (1) and Cu(Me2cydm)Au(CN)2(ClO4) (2), crystallize in the chiral space groups P21 and C2221, respectively. Polymer 1 consists of 1D zig-zag chains of copper atoms bridged by [Au(CN)2] groups with pendant [Au(CN)2] units holding the 1D chains through Au–Au interactions of 3.2799(13) Å, generating an overall 2D array. Polymer 2 has both [Au(CN)2] and ClO4 anions bridging Cu(II) centres in a 2D (4,4) corrugated net motif. Both polymers exhibit weak antiferromagnetic interactions down to 1.8 K with no ordering behaviour. Despite the weak forces holding the 2D sheets in place, the polymers did not exhibit any porosity or vapochromic behaviour, indicating that the structural networks are surprisingly rigid.

Graphical abstract: Preparation and characterization of two chiral Au(CN)2-based coordination polymers containing (1R,2R)-N,N′-dimethylcyclohexanediamine

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Publication details

The article was received on 23 Jul 2007, accepted on 01 Aug 2007 and first published on 23 Aug 2007


Article type: Paper
DOI: 10.1039/B711275K
Citation: CrystEngComm, 2007,9, 1078-1083
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    Preparation and characterization of two chiral Au(CN)2-based coordination polymers containing (1R,2R)-N,N′-dimethylcyclohexanediamine

    A. R. Geisheimer, M. J. Katz, R. J. Batchelor and D. B. Leznoff, CrystEngComm, 2007, 9, 1078
    DOI: 10.1039/B711275K

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