FT-IR, FT-FIR and computerized Raman studies of the vibrational spectra and structure of ethylene complexes.

J. Mink, M. Gal, P. L. Goggin, J. L. Spencer

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Skeletal modes of [M(C2H4)3] (where M=Ni(O) or Pt(O)), and [Pt(C2H4Cl3][NBu4] have been measured and assigned. A new model for the normal coordinate treament of π-complexes has been adopted to calculate metal-ligand force constants. The Pt-ehtylene stretching force constants were 1.66, and 2.54 Ncm-1, and the Pt-ehtylene tilting force constants were 2.04, and 2.84 Ncm-1 for [Pt(C2H4)3], and [Pt(C2H4)Cl3]-1 respectively. These force constants suggest that the π-bonding dominates for tris(ethylene)platinum but that σ- and π-bonding are of almost equal importance for the Zeise's salt analogue. The CC valence force constants of chemisorbed ehtylene suggest that C is rehybridised nearly to sp3 on Ni(lll) and Pt(lll) surfaces but not on Pd(lll). The surface-ehtylene stretching force constants indicate that the bond strengths are in the order Pt>Ni>>Pd.

Original languageEnglish
Pages (from-to)467-472
Number of pages6
JournalJournal of Molecular Structure
Volume142
Issue numberC
DOIs
Publication statusPublished - 1986

Fingerprint

Vibrational spectra
Platinum
vibrational spectra
Stretching
Ethylene
ethylene
Salts
Metals
Ligands
platinum
analogs
salts
valence
ligands
metals

ASJC Scopus subject areas

  • Structural Biology
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Materials Science (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

FT-IR, FT-FIR and computerized Raman studies of the vibrational spectra and structure of ethylene complexes. / Mink, J.; Gal, M.; Goggin, P. L.; Spencer, J. L.

In: Journal of Molecular Structure, Vol. 142, No. C, 1986, p. 467-472.

Research output: Contribution to journalArticle

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AU - Gal, M.

AU - Goggin, P. L.

AU - Spencer, J. L.

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Y1 - 1986

N2 - Skeletal modes of [M(C2H4)3] (where M=Ni(O) or Pt(O)), and [Pt(C2H4Cl3][NBu4] have been measured and assigned. A new model for the normal coordinate treament of π-complexes has been adopted to calculate metal-ligand force constants. The Pt-ehtylene stretching force constants were 1.66, and 2.54 Ncm-1, and the Pt-ehtylene tilting force constants were 2.04, and 2.84 Ncm-1 for [Pt(C2H4)3], and [Pt(C2H4)Cl3]-1 respectively. These force constants suggest that the π-bonding dominates for tris(ethylene)platinum but that σ- and π-bonding are of almost equal importance for the Zeise's salt analogue. The CC valence force constants of chemisorbed ehtylene suggest that C is rehybridised nearly to sp3 on Ni(lll) and Pt(lll) surfaces but not on Pd(lll). The surface-ehtylene stretching force constants indicate that the bond strengths are in the order Pt>Ni>>Pd.

AB - Skeletal modes of [M(C2H4)3] (where M=Ni(O) or Pt(O)), and [Pt(C2H4Cl3][NBu4] have been measured and assigned. A new model for the normal coordinate treament of π-complexes has been adopted to calculate metal-ligand force constants. The Pt-ehtylene stretching force constants were 1.66, and 2.54 Ncm-1, and the Pt-ehtylene tilting force constants were 2.04, and 2.84 Ncm-1 for [Pt(C2H4)3], and [Pt(C2H4)Cl3]-1 respectively. These force constants suggest that the π-bonding dominates for tris(ethylene)platinum but that σ- and π-bonding are of almost equal importance for the Zeise's salt analogue. The CC valence force constants of chemisorbed ehtylene suggest that C is rehybridised nearly to sp3 on Ni(lll) and Pt(lll) surfaces but not on Pd(lll). The surface-ehtylene stretching force constants indicate that the bond strengths are in the order Pt>Ni>>Pd.

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