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A homochiral coordination polymer of cobalt(II) and L-serine
Christelle N Dzesse T1, Felicite Majoumo-Mbe2, Emmanuel N Nfor2
1Department of Mineral Engineering, School of Chemical Engineering and Mineral Industries, University of Ngaoundere, PO Box 454, Ngaoundere, Cameroon.
Abstract:
A one-dimensional chiral cobalt(II) coordination polymer, namely, catena-poly[[[(S)-2-amino-3-hydroxypropanoato-κ2N,O1]cobalt(II)]-μ-(S)-2-amino-3-hydroxypropanoato-κ4O1,O3:N,O1'], [Co(C3H6NO3)2]n or Δ-[Co(L-Ser-κ2N,O)2]n (L-Ser = L-serine) (1), has been synthesized and characterized using elemental and thermal analyses, IR spectroscopy and single-crystal and powder X-ray diffraction techniques. The asymmetric unit of 1 consists of two serine anions which are coordinated to a Co2+ ion to give three chelate rings. These extend the structure into a helical chain with pendant chelate rings which participate in interchain hydrogen bonding. The ability of 1 to undergo transmetallation was evaluated. Among a range of divalent metal ions, only copper(II) partially replaced cobalt(II).
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