Acta Phys. -Chim. Sin. ›› 1992, Vol. 8 ›› Issue (01): 8-9.doi: 10.3866/PKU.WHXB19920103

• Communication • Previous Articles     Next Articles

Mass Spectrometry of Niobium and Sulfur Mixed Cluster Ions Generated in Laser Plasma

Huang Rong-Bin; Zhang Peng; Zhu Yong-Bao; Zheng Lan-Sun   

  1. Department of Chemistry, Xiamen University, Xiamen 361005
  • Received:1991-09-04 Revised:1991-10-21 Published:1992-02-15
  • Contact: Zheng Lan-Sun

Abstract: Cluster ions of niobium and sulfur were generated in laser plasma reactions on a self-built apparatus. Among all Nb_nS_m~+, the cluster cations with the compositions of n<4, m=n+1; n>3, m=n+2 have special high ion intensities in mass spectrum. The cluster anions of high intensities have four more sulfur atoms compared with the relative cations. By analogousing to [Mo_3S_4]~(4+) clusters, it is proposed that these cluster ions contain non-planar puckered rings with quasi-aromaticity.

Key words: laser plasma reaction, quasi-aromativitv mixed cluster ions of niobium and sulfur