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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Helical twisting power and chirality indices

Kamberaj, H. and Osipov, M.A. and Low, R.J. and Neal, M.P. (2004) Helical twisting power and chirality indices. Molecular Physics, 102 (5). pp. 431-446. ISSN 0026-8976

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Abstract

We review the statistical theory of helical twisting power and propose an alternative derivation of the results obtained by Nordio and co-workers [1999, J. chem. Soc. Perkin Trans., 2, 411]. We examine chiral indices which include an interaction between the host and dopant, then compare these with chiral indices dependent only on the dopant structure. We discuss the need for the inclusion of the interaction between dopant and host in the description of chiral induction, and discuss alternative measures of chirality and their shortcomings. We show that both the previously suggested surface indices and the newly proposed one vanish for at least one class of non-trivial chiral structures. We compare the results obtained from these surface indices with a more general 3D chiral index and evaluate these indices for four helicene (M)-1-4 molecules.