Picture map of Europe with pins indicating European capital cities

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.

Explore research outputs by the European Policies Research Centre...

Flexible ligands and structural diversity: Isomerism in Cd(NO3)(2) coordination polymers

Cordes, D.B. and Bailey, A.S. and Caradoc-Davies, P.L. and Gregory, D.H. and Hanton, L.R. and Lee, K. and Spicer, M.D. (2005) Flexible ligands and structural diversity: Isomerism in Cd(NO3)(2) coordination polymers. Inorganic Chemistry, 44 (7). pp. 2544-2552. ISSN 0020-1669

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

The ligands 1,4-bis(2-pyridylmethylsulfanylmethyl)benzene (L1) and 2,5-bis(2-pyridylmethylsulfanylmethyl)pyrazine (L2) were treated with Cd(NO3)(2)center dot 4H(2)O in metal-to-ligand ratios of 1:1 and 2:1, respectively; L2 was also treated with CdCl(2)center dot 2.5H(2)O in a 2:1 ratio. All products were found to be coordination polymers. The crystal structures of {[Cd(L1)(NO3)(2)]center dot CH2Cl2}(infinity) (1a), {[Cd(L1)(NO3)(2)]center dot 4/3CH(3)CN}(infinity) (1b), {[Cd-2(L2)(NO3)(4)]center dot 2CH(3)CN}(infinity) (2 center dot 2CH(3)CN), and {[Cd-2(L2)Cl-4]center dot 2CH(2)Cl(2)}(infinity) (3 center dot 2CH(2)Cl(2)) were determined. Compounds la and 1b were found to be conformational supramolecular isomers. The structure of 1b displayed topological isomerism with two isomeric polymer chains, 1b(1) and 1b(2), in the one crystal forming a single supramolecular array. The structure of 2 center dot 2CH(3)CN showed Cd2(L2) units linked together by nitrates bridging between the Cd(II) centers in a mode previously not seen in Cd(II) compounds. The overall structure of 3 center dot 2CH(2)Cl(2) was found to be similar to that of 2-2CH(3)CN despite the presence of different anions and solvent molecules. Powder X-ray diffraction was used to investigate the nature of bulk preparations of compounds 1-3.