Force constant calculations for the in-plane vibrations of anions [MX3CO]- (where MX is PdCl, PdBr, PtCI, PtBr or Ptl)

P. L. Goggin, M. G. Norton, J. Mink

Research output: Contribution to journalArticle

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Abstract

Force constants for planar complexes [MX3CO]- (MX = PdCl, PdBr, PtC1, PtBr and PtI) have been calculated using a modified valence force field, with constrained off-diagonal force constants based on results of [MX4]2- systems. The resulting stretching force constants are shown to have little dependence on choice of skeletal deformation assignments. The stretching force constants to palladium are lower than to platinum. The difference is more marked for the MC bonds than for MX bonds demonstrating the much weaker π-donor ability of 4d orbitals of Pd(ll) than 5d of Pt(II). The relationship between MX force constants in [MX4]2- [M2X6]2- and [MX3CO]- is discussed.

Original languageEnglish
Pages (from-to)125-128
Number of pages4
JournalInorganica Chimica Acta
Volume26
Issue numberC
DOIs
Publication statusPublished - 1978

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Palladium
Vibration
Platinum
Stretching
Anions
Negative ions
anions
vibration
field theory (physics)
palladium
platinum
valence
orbitals

ASJC Scopus subject areas

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

Cite this

Force constant calculations for the in-plane vibrations of anions [MX3CO]- (where MX is PdCl, PdBr, PtCI, PtBr or Ptl). / Goggin, P. L.; Norton, M. G.; Mink, J.

In: Inorganica Chimica Acta, Vol. 26, No. C, 1978, p. 125-128.

Research output: Contribution to journalArticle

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T1 - Force constant calculations for the in-plane vibrations of anions [MX3CO]- (where MX is PdCl, PdBr, PtCI, PtBr or Ptl)

AU - Goggin, P. L.

AU - Norton, M. G.

AU - Mink, J.

PY - 1978

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AB - Force constants for planar complexes [MX3CO]- (MX = PdCl, PdBr, PtC1, PtBr and PtI) have been calculated using a modified valence force field, with constrained off-diagonal force constants based on results of [MX4]2- systems. The resulting stretching force constants are shown to have little dependence on choice of skeletal deformation assignments. The stretching force constants to palladium are lower than to platinum. The difference is more marked for the MC bonds than for MX bonds demonstrating the much weaker π-donor ability of 4d orbitals of Pd(ll) than 5d of Pt(II). The relationship between MX force constants in [MX4]2- [M2X6]2- and [MX3CO]- is discussed.

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