STUDY OF THE STRUCTURAL PHASE-TRANSITIONS OF (CH3NH3)3SB2CL9 (MACA) AND (CH3NH3)3BI2CL9 (MACB) BY INFRARED-SPECTROSCOPY

被引：9

作者：

BATOR, G

JAKUBAS, R

MALARSKI, Z

机构：

[1] Institute of Chemistry, University of Wrocław, 50-383 Wrocław

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1991年 / 246卷 / 3-4期

关键词：

D O I：

10.1016/0022-2860(91)80126-O

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：

Infrared spectra of polycrystalline (CH3NH3)3Sb2Cl9 and (CH3NH3)3Bi2Cl9 have been studied in the temperature range 90-300 K. A systematic temperature dependence study of the internal modes has been carried out. We discuss the effects of the dynamic state of methylammonium (MA) cations on their vibrational spectra. The results show that the dynamics of MA cations in both compounds is similar in higher (about 300 K) and lower temperature (in the vicinity of 100 K) regions. Substantial differences are revealed in the intermediate temperature interval. The results are in good agreement with earlier dielectric, calorimetric and H-1 NMR studies.

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页码：193 / 202

页数：10

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共 16 条

[1] PHASE-TRANSITION AT 434-K, INDEPENDENT STRAIN COUPLING IN 2ND TRANSITION AT 400-K, AND THERMAL EXPANSIVITY IN FERROELASTIC K2TEBR6 [J].

ABRAHAMS, SC ;

IHRINGER, J ;

MARSH, P ;

NASSAU, K .

JOURNAL OF CHEMICAL PHYSICS, 1984, 81 (04) :2082-2087

[2] STRUCTURAL-PROPERTIES AND LATTICE-DYNAMICS OF 5D TRANSITION-METAL ANTIFLUORITE CRYSTALS [J].

ARMSTRONG, RL .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1980, 57 (06) :343-396

[3] THE INFRARED SPECTRA OF SOLID METHYLAMMONIUM HALIDES [J].

CABANA, A ;

SANDORFY, C .

SPECTROCHIMICA ACTA, 1962, 18 (06) :843-861

[4] BETA AND GAMMA CRYSTAL FORMS OF METHYLAMMONIUM CHLORIDE - POLARIZED-LIGHT INFRARED-SPECTRA AND RAMAN-SPECTRA - INFRARED-SPECTRA OF MATRIX-ISOLATED METHYLAMMONIUM ION [J].

CASTELLUCCI, E .

JOURNAL OF MOLECULAR STRUCTURE, 1974, 23 (03) :449-461

[5] SOFT MODES AND ELASTIC STRAIN AT THE TETRAGONAL-TO-MONOCLINIC PHASE-TRANSITION IN ANTIFLUORITE AND RELATED STRUCTURE TYPES [J].

IHRINGER, J ;

ABRAHAMS, SC .

PHYSICAL REVIEW B, 1984, 30 (11) :6540-6548

[6] DIELECTRIC-PROPERTIES AND PHASE-TRANSITIONS IN (CH3NH3)3SB2BR9 [J].

JAKUBAS, R ;

GALEWSKI, Z ;

SOBCZYK, L ;

MATUSZEWSKI, J .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1985, 18 (27) :L857-L860

[7] STRUCTURE AND PHASE-TRANSITION IN (CH3NH3)3SB2CL9 [J].

JAKUBAS, R ;

CZAPLA, Z ;

GALEWSKI, Z ;

SOBCZYK, L ;

ZOGAL, OJ ;

LIS, T .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1986, 93 (02) :449-455

[8] STRUCTURE AND PHASE-TRANSITION IN (CH3NH3)3BI2BR9 - A NOVEL IMPROPER FERROELECTRICS [J].

JAKUBAS, R ;

KRZEWSKA, U ;

BATOR, G ;

SOBCZYK, L .

FERROELECTRICS, 1988, 77 :129-135

[9] PHASE-TRANSITION IN (CH3NH3)3BI2CL9 [J].

JAKUBAS, R ;

TOMASZEWSKI, PE ;

SOBCZYK, L .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1989, 111 (01) :K27-K29

[10] CALORIMETRIC AND SPECTROSCOPIC STUDIES OF THE CRITICAL PHASE-TRANSITION IN (CH3NH3)2[SNCL6] [J].

MATSUO, T ;

UEDA, M ;

SUGA, H .

CHEMICAL PHYSICS LETTERS, 1981, 82 (03) :577-580