Formation of metal cluster ions by gas-phase ion-molecule reactions: The bond energies of Cr2+ AND Mn2+
作者:R. Houriet、T. Vulpius
DOI:10.1016/0009-2614(89)87130-1
日期:1989.2
Ion-moleculereactions occurring in Cr(CO)6, Fe(CO)5, and Mn2(CO)10 systems are carried out in a Fourier transform ion cyclotron resonance (FTICR) spectrometer. Abundant intensities of bare metal cluster ions can be formed by employing a multiple pulse sequence including selective ejections and photodissociation. In subsequent collisional activation experiments, the binding energies of Cr2+ and Mn2+
Photochemistry of iron atoms and dimers with ethylene in cryogenic matrixes. The FT-IR spectrum of ethenyliron hydride
作者:Zakya H. Kafafi、Robert H. Hauge、John L. Margrave
DOI:10.1021/ja00311a054
日期:1985.12
Ligand Effect on the Growth and the Digestion of Co Nanocrystals
作者:Anna C. S. Samia、Kylee Hyzer、John A. Schlueter、Chang-Jin Qin、J. Samuel Jiang、Samuel D. Bader、Xiao-Min Lin
DOI:10.1021/ja044419r
日期:2005.3.1
The reaction product of cobalt carbonyl decomposition depends on the concentration of the oleic acid ligand. With a low concentration of ligand, nanocrystals nucleate and grow to large ferromagnetic particles through the process of Ostwald ripening and coalescence coarsening. With a high concentration of ligand, stable cluster complexes are formed. Addition or removal of ligand from the reaction products can interchange the formation of cluster complexes and nanocrystals.
Collision‐induced dissociation processes of Nb<sup>+</sup><sub>4</sub> and Fe<sup>+</sup><sub>4</sub>: Fission vs evaporation
作者:S. K. Loh、Li Lian、David A. Hales、P. B. Armentrout
DOI:10.1063/1.455455
日期:1988.7
Collision-induced dissociation (CID) of Nb+4 and Fe+4 with Xe has been studied over an energy range of 0–20 eV with a new instrument designed to study cold cluster ions. The energy dependences of the cross sections are presented. It is found that the lowest energy pathway for Nb+4 CID is fragmentation into molecular ions, or fission. Analysis of this process yields D0(Nb+2–Nb2)=4.3±0.3 eV. Fe+4, on the other hand, fragments only by sequential loss of Fe. Analysis of the lowest energy process gives D0(Fe+3–Fe)=1.8±0.2 eV. No evidence for molecular Fen fragments is observed.
Loh, S. K.; Lian, Li; Hales, David A., Journal of Chemical Physics, 1988, vol. 89, p. 3378 - 3379
作者:Loh, S. K.、Lian, Li、Hales, David A.、Armentrout, P. B.