Substituent effects in single helix-double helix interconversions in copper(I) complexesDrew, M.G.B., Chowdhury, S. and Datta, D. (2004) Substituent effects in single helix-double helix interconversions in copper(I) complexes. Indian Journal of Chemistry Section A, 43 (1). pp. 51-55. ISSN 0376-4710 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. Official URL: http://www.niscair.res.in/ Abstract/SummaryThe copper(I) complex of L, the 1:2 condensate of benzil dihydrazone and 2-formylpyridine, exists as single, helical [CuL](+) and double helical [Cu2L2](2+) in dichloromethane solution but crystallizes only as the double helicate [Cu2L2](ClO4)(2). In contrast, earlier [New J Chem, 27 (2003) 193] it has been found that with L', the 1:2 condensate of benzil dihydrazone and 2-acetylpyridine, only the single helical monomeric species [CuL'](+) is isolable as solid. This contrasting behaviour of the copper(I) complexes of L and L' are scrutinised here by density functional calculations.
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