CHARACTERIZATION OF SILICON-CARBON CLUSTERS BY INFRARED-LASER SPECTROSCOPY - THE V(3)(SIGMA(U)) BAND OF LINEAR SI2C3

被引：40

作者：

VANORDEN, A ^{[1
]}

GIESEN, TF ^{[1
]}

PROVENCAL, RA ^{[1
]}

HWANG, HJ ^{[1
]}

SAYKALLY, RJ ^{[1
]}

机构：

[1] KYUNG HEE UNIV,DEPT CHEM,SEOUL 130701,SOUTH KOREA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1994年 / 101卷 / 12期

关键词：

D O I：

10.1063/1.467904

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：

The ν3(σu) fundamental vibration of 1Σg+ Si2C3 has been observed using a laser vaporization-supersonic cluster beam-diode laser spectrometer. Forty rovibrational transitions were measured in the range of 1965.8 to 1970.9 cm-1 with a rotational temperature of 10-15 K. A least-squares fit of these transitions yielded the following molecular constants: ν3(σu)=1968.188 31(18) cm -1, B″=0.031 575 1(60) cm-1, and B′=0.031 437 4(57) cm-1. These results are in excellent agreement with recent Fourier transform infrared (FTIR) measurements of Si2C3 trapped in a solid Ar matrix [J. Chem. Phys. 100, 181 (1994)] and with ab initio calculations [J. Chem. Phys. 100, 175 (1994)] which suggest cumulenic-like bonding for Si2C3, analogous to the isovalent C 5 carbon cluster. © 1994 American Institute of Physics.

引用

页码：10237 / 10241

页数：5

共 34 条

[1] GEOMETRICAL STRUCTURES AND VIBRATIONAL FREQUENCIES OF THE ENERGETICALLY LOW-LYING ISOMERS OF SIC3 [J].