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Chiral and achiral 1D copper(II) coordination polymers based on glycolato and chelating aromatic diamine ligands

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Abstract

Achiral glycolic acid and chelating aromatic diamine ligands were employed at room temperature to prepare five 1D copper(II) coordination polymers which were structurally characterized. The polymers 1{[Cu(HG)(dipyam)](HG)} (1) (dipyam = 2,2′-dipyridylamine) and 1[Cu(HG)(ClO4)(NN)] (NN = 2,2′-bipyridine (2), NN = 1,10-phenanthroline (3)) adopt homochiral helical structures in the crystal state and undergo spontaneous chiral resolution in the solid state. On the other hand, the polymers containing bidepronated glycolato ligand G, 1{[Cu(G)(dipyam)]·H2O} (1a), obtained from a solution of 1 in MeOH/iPrOH and 1{[Cu2(μ-G)(ClO4)(H2O)(dipyam)2](ClO4)(H2O)2} (4b) are achirals. Crystals of 4b have been obtained together with crystals of the molecular complex [Cu(HG)(H2O)(dipyam)](ClO4) (4a). Analysis by Hirshfeld surface generation and two-dimensional fingerprinting was carried out to study the nature of the interactions and their contributions towards the crystal packing.

Graphical abstract: Chiral and achiral 1D copper(ii) coordination polymers based on glycolato and chelating aromatic diamine ligands

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Publication details

The article was received on 21 Feb 2018, accepted on 25 Mar 2018 and first published on 27 Mar 2018


Article type: Paper
DOI: 10.1039/C8CE00279G
Citation: CrystEngComm, 2018, Advance Article
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    Chiral and achiral 1D copper(II) coordination polymers based on glycolato and chelating aromatic diamine ligands

    R. Carballo, A. Castiñeiras, B. Covelo, A. B. Lago, E. M. Vázquez-López, O. Gómez-Paz, S. Balboa and I. Prieto, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00279G

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