Heats of the Reactions of (Naphthalene)Cr(CO)3, (Cycloheptatriene)Cr(CO)3, (Cycloheptatriene)W(CO)3, and (EtCN)3W(CO)3 with Pyridine, Phosphines, Phosphites, and Other Ligands. Comparative Thermochemical Study of L3M(CO)3 Complexes (M = Cr, Mo, W)

Shakti L. Mukerjee, Russell F. Lang, Telvin Ju, Gabor Kiss, Carl D. Hoff, Steven P. Nolan

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

Enthalpies of ligand substitution based on reaction of (cycloheptatriene)Cr(CO)3, (naphthalene)Cr(CO)3, (cycloheptatriene)W(CO)3, (EtCN)3W(CO)3, and (arene)W(CO)3 complexes with a series of ligands have been measured by solution calorimetry. These data generate an order of thermochemical stability for the complexes LnM(CO)3 (M = Cr, W). These data are combined with earlier data reported for analogous organomolybdenum complexes and allow comparison of relative enthalpies of ligand substitution as a function of the metal. Referenced to the (η6-C6H6)M(CO)3 complex, ligand substitution reactions producing LnM(CO)3 become increasingly exothermic in going from Cr to Mo to W, in keeping with the expected increase in bond strength in going from a first- to a second- to a third-row metal.

Original languageEnglish (US)
Pages (from-to)4885-4889
Number of pages5
JournalInorganic Chemistry
Volume31
Issue number23
DOIs
StatePublished - Nov 1 1992

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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