Near-threshold photoionization to probe neutral ''met-car'' clusters

被引：36

作者：

Brock, LR ^{[1
]}

Duncan, MA ^{[1
]}

机构：

[1] UNIV GEORGIA,DEPT CHEM,ATHENS,GA 30602

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 14期

关键词：

D O I：

10.1021/jp953421p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Metal-carbon compound clusters of Ti, Zr, V, and Nb are produced by laser vaporization in a pulsed nozzle cluster source. The distribution of neutral clusters is investigated by time-of-flight mass spectrometry, with photoionization at a variety of laser wavelengths. Laser wavelength and power dependence studies are used to investigate ionization potentials of different metal-carbon clusters and the role of fragmentation in the appearance of mass distributions. The M(8)C(12) met-car clusters of zirconium, vanadium, and niobium have vertical ionization potentials greater than 5.76 eV. Ti8C12 has a vertical ionization potential of 4.9 + 0.2 eV.

引用

页码：5654 / 5659

页数：6

共 55 条

[1]

[Anonymous], private communication

[2] CLUSTER IONS - CARBON, MET-CARS, AND SIGMA-BOND ACTIVATION [J].