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Steric effect on construction of extended architectures of Ni(II) complexes directed by intermolecular C-H···F and C-H···O interactions

Title
Steric effect on construction of extended architectures of Ni(II) complexes directed by intermolecular C-H···F and C-H···O interactions
Authors
Kwak H.Eom G.H.Lee S.H.Koo H.G.Jang S.P.Lee J.Shin W.Lah M.S.Kim C.Kim S.-J.Kim Y.
Ewha Authors
김성진김영미
SCOPUS Author ID
김성진scopus; 김영미scopus
Issue Date
2010
Journal Title
Journal of Structural Chemistry
ISSN
0022-4766JCR Link
Citation
vol. 51, no. 5, pp. 923 - 930
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Five new Ni(II) complexes with pyridine carboxamide ligands have been synthesized and the crystal structures of three of the complexes were determined. Strong distortion effects of 6-methyl substitution were observed in the complexes with 6-methyl-substituted pyridyl bpb ligands. The C-H···F and C-H···O hydrogen bond interactions build extended architectures in the crystals studied. This result suggests that the steric effect of 6-methyl substitution plays an important role in the distortion of the structure, and the 6-methyl substitution can facilitate hydrogen bond interactions between methyl hydrogen atoms and O(carbonyl) or F atoms. Twelve Ni(II) complexes, including seven complexes reported previously, show reversible redox behavior, implying that the reduced Ni(I) state of each complex is stable in the time scale of CV measurement. The steric effect of R1 substituent and the electronic effects of X1 and X2 groups were found to be the main factors contributing to the shift of the redox potential of the Ni(II) complexes © 2010 Pleiades Publishing, Ltd.
DOI
10.1007/s10947-010-0140-x
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자연과학대학 > 화학·나노과학전공 > Journal papers
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