A first glimpse at the acidic proton vibrations in HCl-water clusters via supersonic jet FTIR spectroscopy

被引：73

作者：

Weimann, M ^{[1
]}

Fárník, M ^{[1
]}

Suhm, MA ^{[1
]}

机构：

[1] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2002年 / 4卷 / 16期

关键词：

D O I：

10.1039/b204840j

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 first mid-IR spectra of the proton vibrational dynamics in isolated HCl-water clusters are presented. Pulsed expansions of HCl and water in rare gases through a slit nozzle are probed by an FTIR spectrometer in the 2000-3300 cm(-1) range. Distinct absorptions by small HCl and HCl water clusters are superimposed on broad bands, partly due to electrolytically dissociated HCl. A firm assignment of the 1 : 1 complex (at 2723.5 cm(-1)) is provided together with a more tentative assignment of the 1 : 2 complex ( near 2464 cm(-1)). The results are compared to condensed phase, matrix isolation and theoretical studies as well as exploratory quantum-chemical calculations. A rationale for the low abundance of small molecular HCl water clusters beyond the 1 : 1 complex is given.

引用

页码：3933 / 3937

页数：5

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