Acta Crystallographica Section B

Structural Science

Volume 68, Part 6 (December 2012)


research papers



Acta Cryst. (2012). B68, 610-618    [ doi:10.1107/S0108768112043996 ]

Structures from MnX2 and proline: isomorphous racemic compounds and a series of chiral non-isomorphous chain polymers

K. Lamberts and U. Englert

Abstract: Reactions of manganese(II) chloride, bromide and iodide with proline as an enantiopure and racemic ligand result in six crystalline solids for which diffraction experiments have been performed at 100 K. For two of these compounds, crystal structures at ambient temperature had been reported previously. The most surprising outcome of our systematic comparison lies in the role of chirality: with enantiopure proline three different coordination polymers have been obtained, whereas racemic proline yields isomorphous mononuclear complexes under the same reaction conditions.

Keywords: chirality; coordination polymers; isomorphous mononuclear complexes.


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