Abstract
The crystal structure of a one-dimensional ladder-shape complex [CoL(H2O)]·2H2O, (L being 1,5-diazacyclooctane-N,N′-diacetate acid), has been determined by X-ray diffraction analysis: monoclinic, space group P21/c with a = 14.406(4) Å, b = 7.380(2) Å, c = 14.594(5) Å, β = 112.685(2)°, M r = 341.23, V = 1431.5(8) Å3, Z = 4. The CoII center is penta-coordinated by two O atoms of the carboxylic pendant arms, two nitrogen donors of the 1,5-diazacyclooctane (DACO) moiety, and a water molecule. The coordination geometry of CoII could be described as a distorted square pyramid and the DACO backbone adopts a normal boat/chair conformation. The complex forms a one-dimensional ladder-shape structure through inter- and intra-molecular O—H···O hydrogen bonds.
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Du, M., Guo, YM. & Bu, XH. Crystal structure of a one-dimensional ladder-shape CoII complex through hydrogen bonds with an amino-acid-like ligand 1,5-diazacyclooctane-N,N′-diacetate acid. Journal of Chemical Crystallography 32, 127–131 (2002). https://doi.org/10.1023/A:1015649918624
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DOI: https://doi.org/10.1023/A:1015649918624