Observation of the ν1, fundamental band in sulphur trioxide induced by symmetry breaking upon 18O substitution

被引：3

作者：

Laptev, VB ^{[1
]}

Makarov, AA ^{[1
]}

Tumanova, LM ^{[1
]}

Ryabov, EA ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Spect, Troitsk 142092, Moscow Region, Russia

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 1998年 / 54卷 / 03期

关键词：

nu(1) fundamental band; sulphur trioxide; O-18; substitution;

D O I：

10.1016/S1386-1425(97)00242-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The infrared (IR) absorption spectrum of gaseous SO3 enriched with O-18 is studied. The nu(1) band of (SO2O)-O-16-O-18 1040 +/- 2 cm(-1) is observed in the IR spectrum, whereas it is inactive for (SO3)-O-16. The isotope shift measured in nu(1) is 28 +/- 2 cm(-1). The integrated intensity of this band was measured to 5.7 +/- 1.6 atm (-1) cm(-2). These results agree with our calculations, carried out within the framework of the valence force model. The opportunity to realize isotopically selective photolysis of (S16O2O)-O-18 molecules with excitation of the nu(1) mode by combined IR + UV laser radiation is discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：491 / 494

页数：4

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