Cd(ΙΙ) and Mn(ΙΙ) complexes of a new hexadentate Schiff base ligand derived from an asymmetric tripodal tetraamine and 2-pyridinecarboxaldehyde

Sadegh Salehzadeh, Reza Golbedaghi, Ian S. Tidmarsh, Nawal K. Al-Rasbi, Harry Adams, Michael D. Ward

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Two new compounds, [CdL22pyfp(NO3)](ClO4) (1) and [MnL22pyfpCl](ClO4) (2), were prepared by the template condensation of a previously known ligand, (L22py), and 2-pyridinecarboxaldehyde in the presence of Cd(NO3)2 · 4H2O or MnCl2 · 4H2O in equimolar ratios. The resulting compounds were characterized by elemental analysis, IR and single crystal X-ray diffraction, and by NMR in the case of the Cd(II) complex. The Cd(II) ion is in an eight-coordinate environment that is best described as a distorted dodecahedron. The environment around the Mn(II) ion may be described as a distorted pentagonal bipyramid. The 1H NMR spectrum of the cadmium complex shows the signal of the imine proton to have two satellites (3J = 44.4 Hz) with intensities of 1:6:1 due to coupling with the neighboring 111/113Cd atom. The electronic spectra of both complexes, as well as the ligand, is explained on the basis of TD-DFT calculations.

Original languageEnglish
Pages (from-to)3549-3556
Number of pages8
JournalPolyhedron
Volume27
Issue number18
DOIs
Publication statusPublished - Dec 12 2008

Fingerprint

Schiff Bases
imines
Ligands
Nuclear magnetic resonance
Ions
nuclear magnetic resonance
ligands
Imines
Cadmium
Discrete Fourier transforms
electronic spectra
cadmium
crystals
Protons
Condensation
ions
templates
condensation
Single crystals
Satellites

Keywords

  • Ab initio
  • Cadmium complex
  • Manganese complex
  • Template condensation
  • Tripodal Schiff base ligands

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Materials Chemistry
  • Physical and Theoretical Chemistry

Cite this

Cd(ΙΙ) and Mn(ΙΙ) complexes of a new hexadentate Schiff base ligand derived from an asymmetric tripodal tetraamine and 2-pyridinecarboxaldehyde. / Salehzadeh, Sadegh; Golbedaghi, Reza; Tidmarsh, Ian S.; Al-Rasbi, Nawal K.; Adams, Harry; Ward, Michael D.

In: Polyhedron, Vol. 27, No. 18, 12.12.2008, p. 3549-3556.

Research output: Contribution to journalArticle

Salehzadeh, Sadegh ; Golbedaghi, Reza ; Tidmarsh, Ian S. ; Al-Rasbi, Nawal K. ; Adams, Harry ; Ward, Michael D. / Cd(ΙΙ) and Mn(ΙΙ) complexes of a new hexadentate Schiff base ligand derived from an asymmetric tripodal tetraamine and 2-pyridinecarboxaldehyde. In: Polyhedron. 2008 ; Vol. 27, No. 18. pp. 3549-3556.
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AU - Adams, Harry

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