Raman band of matrix isolated NaMSeN clusters

被引：13

作者：

Herwig, C ^{[1
]}

Schnell, M ^{[1
]}

Becker, JA ^{[1
]}

机构：

[1] Univ Hannover, Inst Phys Chem & Elektrochem, D-30167 Hannover, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 385卷 / 5-6期

关键词：

D O I：

10.1016/j.cplett.2004.01.020

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：

Selenium clusters are doped with sodium atoms in the reaction zone of a dual laser vaporization source. Product clusters Se-N and Na2SeN with N = 4-8 are deposited in a nitrogen matrix and investigated by Raman spectroscopy. Beside the Raman band of pure SeN clusters, a new intense band between 165 and 225 cm(-1) is observed. Within a simple model of dynamical charge transfer the new band is attributed to certain vibrational modes with considerable changes of Na-Se bond lengths. The assignment is confirmed by density functional calculations. A bonding model for the Na2SeN clusters containing horseshoe shaped polyanionic selenium chains is developed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：462 / 466

页数：5

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