Gas phase photodissociation of MC2H2+ (M = Zr, Nb). Determination of D0(M+C2H2

✍ Scribed by Don Rufus A. Ranatunga; Ben S. Freiser

• Book ID: 103035285
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 342 KB
• Volume: 233
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)01419-v

✦ Synopsis

Gas phase photodissociation of M(acetylene) ÷ where M = Nb, Zr is studied with Fourier transform ion cyclotron resonance mass spectrometry to determine metal ion-ligand bond energies. These ions are generated by the dehydrogenation reaction of thermalized metal ions with ethylene and stored in the trapping cell for photodissociation experiments. From the photoappearance thresholds of the simple cleavage product M ÷, experimental bond energy values of D°(Zr+-C2H2) = 59 _ 3 kcal/mol and D°(Nb+-C2H 2) = 57 ___ 3 kcal/mol are assigned. These energies can be compared to recent theoretical values of De(Zr+-C2H2) = 68 kcal/mol and De(Nb+-C2H2 ) = 59 kcal/mol.