Influence of Pt-Cl force constants on the Raman lineshapes in (PtCl)-Cl-35/Cl-37 chains

被引：6

作者：

Bardeau, JF ^{[1
]}

Bulou, A ^{[1
]}

Swanson, BI ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,MSC345,INC4,LOS ALAMOS,NM 87545

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 1995年 / 26卷 / 12期

关键词：

D O I：

10.1002/jrs.1250261206

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The influence of the Cl-35/Cl-37 isotopic disorder of natural chlorine on the Raman and infrared lineshapes of the vibrational modes in PtCl chains was calculated as a function of the interionic force constants in a one-dimensional model. It is shown that the fine structure of the Raman line is strongly dependent of the Pt-3+delta-Cl and Pt-3-delta-Cl force constants, and so it can be used to estimate the charge disproportion delta. From the case of [Pt(en)(2)][Pt(en)(2)Cl-2](ClO4)(4) it appears that the description of the high-wavenumber infrared line (v(2)) requires one to take into account interactions with more distant ions. It is also shown that the intensity of the low-wavenumber infrared-active mode (v(3)) is so weak that the corresponding line may have never been observed.

引用

页码：1051 / 1057

页数：7

共 17 条

[1] TUNING OF THE CHARGE-DENSITY-WAVE IN THE HALOGEN-BRIDGED TRANSITION-METAL LINEAR-CHAIN COMPOUNDS [J].