A homochiral coordination polymer of cobalt(II) and l‐serine

• Published in: Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2021-12, Vol.77 (12), p.764-769
• Main Authors: Dzesse T., Christelle N., Majoumo-Mbe, Felicite, Nfor, Emmanuel N., Bourne, Susan A.
• Format: Article
• Language: English
• Subjects: amino acid; Anions; Chelates; Cobalt; coordination polymer; Coordination polymers; crystal structure; Hydrogen bonding; Infrared spectroscopy; Polymers; serine; transmetallation
• ISSN: 2053-2296; 0108-2701; 2053-2296; 1600-5759
• DOI: 10.1107/S2053229621011347

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). Δ‐[Co(l‐Ser‐κ2N,O)2]n is a chiral helical one‐dimensional coordination polymer in which hydrogen bonding links the chains into a two‐dimensional network.