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Selected Works of Paul R. Challen
Article
A niobium(V) complex with mixed O,S-donor ligands. Synthesis, structure and properties of the anion tris(2-mercapto-4-methylphenolato)niobate(V)
Polyhedron (1997)
  • Paul R. Challen, John Carroll University
  • Diane H. Peapus
  • Karen A. Magnes
Link
Abstract
Reaction of Nb(OEt)5 with 2-mercapto-4-methylphenol (mmpH2) in the presence of triethylamine gave the mononuclear tris complex (Et3NH)[Nb(mmp)3] which was structurally characterized. The coordination geometry around the niobium is between octahedral and trigonal prismatic, with a twist angle of 41.5°. The mercaptophenolate ligands are arranged around the metal in a “propeller” fashion. (Et3NH)[Nb(mmp)3] was characterized by IR, 1H NMR and UV-vis spectroscopies, and cyclic voltammetry. A reversible reduction wave found at −1.03 V is for reduction to the NbIV complex.
Disciplines
Publication Date
1997
Citation Information
Paul R. Challen, Diane H. Peapus and Karen A. Magnes. "A niobium(V) complex with mixed O,S-donor ligands. Synthesis, structure and properties of the anion tris(2-mercapto-4-methylphenolato)niobate(V)" Polyhedron Vol. 16 Iss. 9 (1997)
Available at: http://works.bepress.com/paul_challen/8/