Heats of Reaction of (Toluene)Mo(CO)3with Substituted Arenes, Sodium Cyclopentadiene, Nitriles, Isocyanides, and Other Ligands. Solution Thermodynamic Study of Ligand Exchange in the Complexes fac-L3Mo(CO)3 Article

Nolan, SP, de la Vega, RL, Hoff, CD. (1986). Heats of Reaction of (Toluene)Mo(CO)3with Substituted Arenes, Sodium Cyclopentadiene, Nitriles, Isocyanides, and Other Ligands. Solution Thermodynamic Study of Ligand Exchange in the Complexes fac-L3Mo(CO)3 . ORGANOMETALLICS, 5(12), 2529-2537. 10.1021/om00143a022

cited authors

  • Nolan, SP; de la Vega, RL; Hoff, CD

authors

abstract

  • The results of solution calorimetric studies are used to measure the relative stability in solution of the following complexes: (arene)Mo(CO)3(arene = o-xylene, m-xylene, p-xylene, N,N-dimethylaniline, p-bis(dimethylamino)benzene, (trimethylsilyl)benzene, sodium tetraphenylborate, and sodium cyclopentadiene), L3Mo(co)3(L = acetone, acetonitrile, benzonitrile, tert-butyl cyanide, tert-butyl isocyanide, cyclohexyl isocyanide, piperidine, and tributylphosphine oxide), and L*Mo(CO)3(L* = bis(methoxyethyl) ether and potassium hydridotris(pyrazoyl)borate). The enthalpy of deprotonation of H-Mo(CO)3C5H5by NaC5H5has been measured and used to complete a thermochemical cycle comparing the heats of reaction of (toluene)Mo(CO)3with C5H6and NaC5H5. These results are combined with earlier data to yield enthalpies of ligand exchange: LnMo(CO)3+ which span over 50 kcal/mol and encompass a broad range of organometallic ligands. Factors involved in controlling Mo-L bond strengths are discussed. © 1986, American Chemical Society. All rights reserved.

publication date

  • January 1, 1986

published in

Digital Object Identifier (DOI)

start page

  • 2529

end page

  • 2537

volume

  • 5

issue

  • 12