Infrared Spectra of HCl-H2O Clusters in Helium Nanodroplets

被引：78

作者：

Flynn, Steven D. ^{[2
]}

Skvortsov, Dmitry ^{[1
]}

Morrison, Alexander M. ^{[2
]}

Liang, Tao ^{[2
]}

Choi, Myong Yong ^{[1
,3
,4
]}

Douberly, Gary E. ^{[2
]}

Vilesov, Andrey F. ^{[1
]}

机构：

[1] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA

[2] Univ Georgia, Dept Chem, Athens, GA 30602 USA

[3] Gyeongsang Natl Univ, Dept Chem, Jinju 660701, South Korea

[4] Gyeongsang Natl Univ, Res Inst Nat Sci, Jinju 660701, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 15期

基金：

美国国家科学基金会;

关键词：

WATER CLUSTERS; PROTON VIBRATIONS; CHLORIDE ANION; ELECTRIC-FIELD; LIQUID-HELIUM; HCL CLUSTERS; GAS-PHASE; SPECTROSCOPY; MOLECULES; IONIZATION;

D O I：

10.1021/jz100637m

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：

Small (HCl)(m)(H2O)(n) clusters have been assembled in He droplets, and their spectra in the HCl stretch range (2500-3000 cm(-1)) have been obtained. In a recent He droplet study, a band at 2670 cm(-1) was assigned to the dissociated H3O+(H2O)(3)Cl- ion pair. In this work, we have revised the assignment of this band to a cyclic hydrogen-bonded form of the (HCl)(2)(H2O)(2) cluster based on careful measurements of the pickup pressure dependence as well as the transition moment angles associated with the HCl stretch vibrations, A number of vibrational bands due to small mixed clusters have also been observed. As the number of the captured water molecules increases, a broad feature appears that spans the 2550-2800 cm(-1) range. The possible origin of this spectral broadening in large (HCl)(m)(H2O)(n) clusters is discussed.

引用

页码：2233 / 2238

页数：6

共 36 条

[1] SPECTRUM AND STRUCTURE OF WATER-RICH WATER HYDRACID COMPLEXES FROM MATRIX-ISOLATION SPECTROSCOPY - EVIDENCE FOR PROTON-TRANSFER [J].