MIXED SILICON-CARBIDE CLUSTERS STUDIED BY LASER-ABLATION FOURIER-TRANSFORM ICR MASS-SPECTROMETRY

被引：13

作者：

GREENWOOD, PF ^{[1
]}

WILLETT, GD ^{[1
]}

WILSON, MA ^{[1
]}

机构：

[1] CSIRO,DIV COAL & ENERGY TECHNOL,N RYDE,NSW 2113,AUSTRALIA

来源：

ORGANIC MASS SPECTROMETRY | 1993年 / 28卷 / 08期

关键词：

D O I：

10.1002/oms.1210280804

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Ions produced by the 1064 nm Nd: YAG laser ablation of various Si-C samples include mixed silicon carbon (Si(x)C(y)) cluster ions of low molecular mass. Unique Si(x)C(y) cluster ion distributions are observed. A charge state effect for Si(x)C(y) clusters is evident from differences between the respectively charged distributions. This may be accounted for by either differing energetics and/or differing formation mechanisms for positive and negative Si(x)C(y) cluster ions. Several specific Si(x)C(y) clusters of probable high stability consistently dominate the mass spectra. The chemistry of the more abundant Si(x)C(y) ions was probed by collision-induced dissociation and ion-molecule reactivity experiments. Similar Si(x)C(y)+. dissociation results in the common loss of an Si ion. Parent Si(x)C(y) ion and small neutral reagent reactants give rise to oxidation, addition and exchange reactions.

引用

页码：831 / 840

页数：10

共 80 条

[1] ALFORD JM, 1989, MATER RES SOC S P, V131, P3
[2] DETERMINATION OF CARBON CLUSTER IONIZATION-POTENTIALS VIA CHARGE-TRANSFER REACTIONS
BACH, SBH
EYLER, JR
[J]. JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (01) : 358 - 363
[3] THEORETICAL PREDICTIONS AND EXPERIMENTAL DETECTION OF THE SIC MOLECULE
BERNATH, PF
ROGERS, SA
OBRIEN, LC
BRAZIER, CR
MCLEAN, AD
[J]. PHYSICAL REVIEW LETTERS, 1988, 60 (03) : 197 - 199
[4] BERNSTEIN ER, 1990, ATOMIC MOL CLUSTERS
[5] PYROLYSIS AND IR LASER PHOTOLYSIS OF SIH4 MOLECULES IN THE PRESENCE OF NON-REACTIVE AND REACTIVE ADDITIVES
BERTOLOTTI, M
CONSALVO, D
MELE, A
GIARDINIGUIDONI, A
TEGHIL, R
[J]. APPLIED SURFACE SCIENCE, 1989, 36 (1-4) : 89 - 94
[6] NEGATIVE AND POSITIVE CLUSTER IONS OF CARBON AND SILICON
BLOOMFIELD, LA
GEUSIC, ME
FREEMAN, RR
BROWN, WL
[J]. CHEMICAL PHYSICS LETTERS, 1985, 121 (1-2) : 33 - 37
[7] BOGEY M, 1991, ASTRON ASTROPHYS, V247, pL13
[8] CHEMISTRY INITIATED BY ATOMIC SILICON IONS IN THE GAS-PHASE - FORMATION OF SILICON-BEARING IONS AND MOLECULES
BOHME, DK
[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1990, 100 : 719 - 736
[9] BONNELL DA, COMMUNICATION
[10] THE A3-SIGMAX3-PI TRANSITION OF THE SIC RADICAL
BRAZIER, CR
OBRIEN, LC
BERNATH, PF
[J]. JOURNAL OF CHEMICAL PHYSICS, 1989, 91 (12) : 7384 - 7386

← 1 2 3 4 5 6 7 8 →