Crystal structure and electrochemical properties of CuII complexes with 1,2-bis(2-hydroxybenzamido)benzene

Yukinari Sunatsuki, Ryoko Hirata, Yuri Motoda, Masaaki Nakamura, Naohide Matsumoto, Fumiaki Kai

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The tetramethylammonium and potassium salts of [1,2-bis(2-oxybenzamidato)benzene]copper(II) abbreviated as [NMe4]2[Cu(hbab)] and K2[Cu(hbab)] were prepared and characterized. The x-ray analysis of the potassium salt, K2[Cu(hbab)]·5DMF, revealed a unique one-dimensional chain structure consisting of {[KO3][K(Cu(hbab)O]}n as the resulting unit, where each K+ ion is surrounded octahedrally by six oxygen atoms and all the oxygen atoms play the role of a bridging group to the K+ ion. The tetramethylammonium salt, [NMe4]2[Cu(hbab)]·H2O, behaves as a 2 : 1 electrolyte in the 10-3 mol dm-3 solutions of methanol, acetonitrile and DMF, while the potassium salt behaves as a 2 : 1 electrolyte in methanol and as a 1 : 1 electrolyte in acetonitrile and DMF. The CuII/III redox potentials of the tetramethylammonium salt in DMF under the presence of 2 equivalent molar of K+, Na+, and Li+ shift to more positive values than those without alkali metal ions, where the magnitude of the positive shift increases with increasing of charge density of alkali metal ion, namely Li+ > Na+ > K-. The charge effect due to ion pair formation between [Cu(hbab)]2- and Na+ or K+ causes the potential shift, while the potential shift in the case of the Li+ ion is brought about by the decrease of donor ability of the phenolic oxygens, besides the charge effect.

Original languageEnglish
Pages (from-to)4105-4111
Number of pages7
JournalPolyhedron
Volume16
Issue number23
Publication statusPublished - Sep 1997
Externally publishedYes

Fingerprint

Benzene
Electrochemical properties
Salts
Crystal structure
benzene
Ions
salts
crystal structure
Electrolytes
Alkali Metals
Potassium
potassium
shift
electrolytes
Alkali metals
Oxygen
Acetonitrile
alkali metals
acetonitrile
Metal ions

Keywords

  • Counter cation effect
  • Crystal structure
  • Electrochemical property
  • Ion pair formation
  • Solvent effect

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Sunatsuki, Y., Hirata, R., Motoda, Y., Nakamura, M., Matsumoto, N., & Kai, F. (1997). Crystal structure and electrochemical properties of CuII complexes with 1,2-bis(2-hydroxybenzamido)benzene. Polyhedron, 16(23), 4105-4111.

Crystal structure and electrochemical properties of CuII complexes with 1,2-bis(2-hydroxybenzamido)benzene. / Sunatsuki, Yukinari; Hirata, Ryoko; Motoda, Yuri; Nakamura, Masaaki; Matsumoto, Naohide; Kai, Fumiaki.

In: Polyhedron, Vol. 16, No. 23, 09.1997, p. 4105-4111.

Research output: Contribution to journalArticle

Sunatsuki, Y, Hirata, R, Motoda, Y, Nakamura, M, Matsumoto, N & Kai, F 1997, 'Crystal structure and electrochemical properties of CuII complexes with 1,2-bis(2-hydroxybenzamido)benzene', Polyhedron, vol. 16, no. 23, pp. 4105-4111.
Sunatsuki, Yukinari ; Hirata, Ryoko ; Motoda, Yuri ; Nakamura, Masaaki ; Matsumoto, Naohide ; Kai, Fumiaki. / Crystal structure and electrochemical properties of CuII complexes with 1,2-bis(2-hydroxybenzamido)benzene. In: Polyhedron. 1997 ; Vol. 16, No. 23. pp. 4105-4111.
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