The formation, photodissociation, and bond structure of cobalt–sulfur cluster ions

Shi, Yang; Zhang, Nan; Gao, Zhen; Kong, Fanao; Zhu, Qihe
December 1994
Journal of Chemical Physics;12/1/1994, Vol. 101 Issue 11, p9528
Academic Journal
The formation and photodissociation of cobalt–sulfur cluster ions (ConS+m) produced by laser ablation on a tablet of well-mixed cobalt and sulfur powder were studied with a home-built tandem time-of-flight (TOF) mass spectrometer. In the mass spectrum, there are many intense peaks of more stable cluster ions ConS+m signified as follows: n=2–5,7, m=n-1; n=6,8–11, m=n-2; n=12–13, m=n-3; n=14–16, m=n-4. The photolysis of the mass-selected cluster ions was performed with a 248 nm excimer laser. The dissociation patterns support the above composition results. Previous theories about clusters do not explain the experimental results. A relationship between the electron number and orbital number of more stable clusters was recognized. Ab initio calculations were performed on two small cluster ions to determine stable geometries. © 1994 American Institute of Physics.


Related Articles

  • The production and photodissociation of iron–sulfur cluster ions. Yu, Zhongde; Zhang, Nan; Wu, Xiaojun; Gao, Zhen; Zhu, Qihe; Kong, Fanao // Journal of Chemical Physics;8/1/1993, Vol. 99 Issue 3, p1765 

    Iron–sulfur cluster ions FenSm+ (n=1–13, m=1–13) were produced by direct laser ablation on a solid sample containing a mixture of iron and sulfur powder. UV photodissociation of the cluster ions was studied with a tandem time-of-flight mass spectrometer. It was found that...

  • Aluminum–sulfur cluster ions: Formation and photolysis. Zhang, Nan; Shi, Yang; Gao, Zhen; Kong, Fanao; Zhu, Qihe // Journal of Chemical Physics;7/15/1994, Vol. 101 Issue 2, p1219 

    Aluminum–sulfur cluster ions were obtained by direct laser ablation (248 nm, ≥10 MW/cm2) and analyzed with a tandem time-of-flight mass spectrometer. The regular peaks of cluster ions having composition of AlS+(Al2S3)n (n=1,2,3,...,31) were shown on the first time-of-flight mass...

  • Laser ablation of a silicon carbide target: a time-of-flight quadrupole mass spectrometric study. Nam, S. H.; Park, S. M. // Applied Physics A: Materials Science & Processing;2004, Vol. 79 Issue 4-6, p1117 

    Laser ablation of a SiC target was attempted to investigate the formation mechanisms and expansion dynamics of ionic species including silicon carbide cluster ions in the plume. Time-of-arrival distributions of ions were analysed to obtain their mean velocities and spatial distributions....

  • Structures and reactions of methanol molecules on cobalt cluster ions studied by infrared photodissociation spectroscopy. Hirabayashi, Shinichi; Okawa, Ryuji; Ichihashi, Masahiko; Kawazoe, Yoshiyuki; Kondow, Tamotsu // Journal of Chemical Physics;4/28/2009, Vol. 130 Issue 16, p164304 

    Structures of methanol molecules chemisorbed on cobalt cluster ions, Con+ (n=2–6), were investigated by infrared photodissociation (IR-PD) spectroscopy in the wavenumber range of 3400–4000 cm-1. All the IR-PD spectra measured exhibit an intense peak in the region of the OH...

  • Ultraviolet-visible photodissociation spectra of V[sub n][sup +]Xe (n=5-8) cluster complex cations. Antonietti, J. M.; Chatelain, A.; Fedrigo, S. // Journal of Chemical Physics;2/15/2001, Vol. 114 Issue 7 

    Photodissociation spectra of vanadium cluster ion-xenon atom complexes V[sub n][sup +]Xe (n=5-8) have been measured between 290 and 670 nm. Spectra have been obtained by recording the depletion signal induced on the mass-selected cluster current intensity by the absorption of a photon. Due to...

  • Spectroscopy and reactivity of size-selected Mg[sup +]-methanol clusters. Lee, James I.; Sperry, David C.; Farrar, James M. // Journal of Chemical Physics;4/8/2001, Vol. 114 Issue 14 

    This work presents photodissociation spectra of Mg[sup +](CH[sub 3]OD)[sub n] (n=1-5). Mass spectrometry of the parent cluster ions shows that C-H bond cleavage occurs in the ground electronic state. The branching ratios for products of photodissociation show strong selectivity; methyl loss is...

  • Photodissociation of carbon cluster cations. Geusic, M. E.; Jarrold, M. F.; McIlrath, T. J.; Freeman, R. R.; Brown, W. L. // Journal of Chemical Physics;4/1/1987, Vol. 86 Issue 7, p3862 

    Mass resolved carbon cluster cations from C+3 to C+20 have been photofragmented using 248 and 351 nm light. For an initial cluster C+n , the dominant fragment observed is C+n-3 . Fluence dependence measurements of photofragmentation yield bracketed dissociation thresholds, photofragmentation...

  • Photodissociation of Kr+n clusters. Chen, Z. Y.; Cogley, C. D.; Hendricks, J. H.; May, B. D.; Castleman, A. W. // Journal of Chemical Physics;9/1/1990, Vol. 93 Issue 5, p3215 

    The photodissociation of Kr+n (3≤n≤11) cluster ions is observed for the first time in the 565 to 630 nm wavelength range. Kr+3 has a photodissociation cross section of (8.1±0.8)×10-17 cm2 at 612 nm, while Kr+4 and Kr+5 are found to have larger photodissociation cross sections...

  • Photodissociation study on Mg+(H2O)n, n=1–5: Electronic structure and photoinduced intracluster reaction. Misaizu, F.; Sanekata, M.; Fuke, K.; Iwata, S. // Journal of Chemical Physics;1/15/1994, Vol. 100 Issue 2, p1161 

    Photodissociation spectra of Mg+(H2O)n (n=1–5) cluster ions were examined in the wavelength region from 720 to 250 nm by monitoring the total yield of the fragment ions. The absorption bands exhibit redshifts as large as 17 000 cm-1 with respect to the 2P–2S resonance line of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics