✦ LIBER ✦

Guided ion-beam determination of the Co+-H2 bond dissociation energy

✍ Scribed by Chris L. Haynes; P.B. Armentrout

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 416 KB
Volume: 249
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)01337-7

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✦ Synopsis

A guided ion-beam tandem mass spectrometer with a flow tube ion source is used to determine the 0 K bond dissociation energy of Co+-H2 from ligand exchange of CoCH~ with D 2 and from collision-induced dissociation (CID) of CoH~ + Xe. Given Do(Co+-CH4 ) = 0.93 + 0.06 eV determined in our labs, the endothermicity of the ligand exchange reaction provides D0(Co+-D2) = 0.74 + 0.07 eV. The direct CID of CoH~-process yields D0(Co+-H2) = 0.82 _+ 0.11 eV. After zero-point energy corrections, the average of these two results yields 0.76 4-0.10 eV. This value agrees nicely with those determined by equilibrium methods and theory.

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