Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (02): 189-192.doi: 10.3866/PKU.WHXB19950219

• Note • Previous Articles    

Multiphoton Ionization and Dissociation of Mn2(CO)10 in a Supersonic Molecular Beam

Wang Wu-Min, Hou Hui-Qi, Qin Qi-Zong, Qian Yi-Le, Fang Li, Zheng Hai-Yang   

  1. Laser Chemistry Laboratory,Fudan Univeristy,Shanghai 200433|Laser Spectra Laboratory,Anhui Institute of Optics and Fine Mechanics,Academica Sinica,Hefei 230031
  • Received:1994-01-10 Revised:1994-04-27 Published:1995-02-15
  • Contact: Qin Qi-Zong

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Abstract:

The multiphoton ionization and dissociation of Mn2(CO)10 in a supersonic moleclar beam is investigated with a XeCl excimer laser (308nm) and a tunable dye laser(430 ~ 448nm). The main fragment ions detected by a time-of-flight mass spectrometer include Mn+, Mn(CO)x+(x≦5), Mn2(CO)y+ (y≦9) and the parent molecular ionMn2(CO)10+. Additionally, metal cluster ions Mni+(i=2,3,4) and metal carbonyl cluster ions Mn3(CO)9,10+ and Mn4(CO)10+ are also detected. The Mn+ ion might be produced via a sequential photodissociation to form Mn atoms. The mechanism of the laserinduced multiphoton ionization and dissociation is discussed.

Key words: Mn2(CO)10, Multiphoton ionization/dissociation, Chemical kinetics