Acta Phys. -Chim. Sin. ›› 1991, Vol. 7 ›› Issue (06): 646-647.doi: 10.3866/PKU.WHXB19910602

• Communication • Previous Articles     Next Articles

Mass Spectrometry of Laser Generated Positive and Negative Phosphrus Cluster Ions

Huang Rong-Bin; Zhang Peng; Li Wen-Ying; Su Jian-Rui; Zheng Lan-Sun   

  1. Department of Chemistry, Xiamen University, Xiamen 361005
  • Received:1991-06-13 Revised:1991-08-08 Published:1991-12-15
  • Contact: Zheng Lan-Sun

Abstract: Both positive and negative phosphrus cluster ions were generated on a homemade laser-probe time-of-flight mass spectrometer. P_6~+ has the highest intensity in positive ion mass spectrum, and P_5~- for negative ions. It is proposed that both P_6~+ and P_5~- adopt the planar monocyclic configuration and are aromatic according to Hückel Rule. Further analysis of mass spectra shows that all cluster anions are composed of 5-membered rings and cations arc composed of 6-membered rings.

Key words: Phosphrus cluster, Laser generation, Mass spectrometry