title: Molybdenum(V) on an oxide string. Formation and solution stability of the linear complex (mu-trans-dioxo(tetraphenylporphyrinato)molybdenato(V))- bis(oxo(tetraphenylporphyrinato)molybdenum(V)) perchlorate.
abstract: The unusual linear trinuclear complex [Mo3O4(TPP)3]+ is formed in solution upon the reaction of [MoO(TPP)-(OClO3)] with [[MoO(TPP)]2O], and an equilibrium between [Mo3O4(TPP)3]+ and its constituent species is rapidly established. Spectrophotometric experiments suggest that [Mo3O4(TPP)3]+ is the predominant species found in solutions resulting from the mixture of [MoO(TPP)(OClO3)] and [[MoO(TPP)]2O], and its formation is strongly favored (log K = 5.5 +/- 0.5 M-1). No evidence of higher oligomers has been observed. A mechanism for the formation of [Mo3O4(TPP)3]+ by the controlled hydrolysis of [MoO(TPP)(OClO3)] is proposed.
authors.affiliation: Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors.forename: B J
authors.initials: BJ
authors.lastname: Hamstra
authors.forename: B
authors.initials: B
authors.lastname: Cheng
authors.forename: M K
authors.initials: MK
authors.lastname: Ellison
authors.forename: W R
authors.initials: WR
authors.lastname: Scheidt
mesh_terms: D002384:Catalysis; D018360:Crystallography, X-Ray; D006868:Hydrolysis; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D008665:Metalloporphyrins / Q000138:chemical synthesis* / Q000737:chemistry*; D008956:Models, Chemical; D008982:Molybdenum / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*
chemical_list: C471219:(dioxo(tetraphenylporphyrinato)molybdenato(V))- bis(oxo(tetraphenylporphyrinato)molybdenum(V)) perchlorate; D008024:Ligands; D008665:Metalloporphyrins; D010087:Oxides; D008982:Molybdenum