VIBRATIONAL-SPECTRA AND PHASE-TRANSITION IN TRIGLYCINE SULFO-PHOSPHATE

被引:29
作者
JOE, IH
ARULDHAS, G
ANBUKUMAR, S
RAMASAMY, P
机构
[1] UNIV KERALA,DEPT PHYS,TRIVANDRUM 695581,INDIA
[2] ANNA UNIV,CTR CRYSTAL GROWTH,MADRAS 600025,INDIA
关键词
D O I
10.1002/crat.2170290520
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Infrared and single crystal Raman spectra for various polarization geometries of Triglycine Sulpho-Phosphate (TGSP) have been recorded and analysed. The bonds of hydrogen atoms in H2SO4 and H3PO4 groups are shown to be weak and the possibility of proton transfer from H2SO4/H3PO4 group is indicated. Two different types of glycinium ions are shown to be present in the unit cell. Temperature dependent Raman spectra of TGSP have been recorded. The phase transition detected around 325 K in TGSP is explained in terms of the flipping motion of the glycinium ion and of attaining a higher crystal symmetry.
引用
收藏
页码:685 / 692
页数:8
相关论文
共 27 条
[11]   FERROELECTRIC BEHAVIOR OF TRIGLYCINE SULFATE CRYSTALS CONTAINING LOW CONCENTRATIONS OF METAL-IONS NEAR THE TRANSITION-TEMPERATURE [J].
GAFFAR, MA ;
ELFADL, AA ;
MANSOUR, SA .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1989, 22 (02) :327-336
[12]   LASER RAMAN-SPECTRUM OF TRIGLYCINE SULFATE [J].
GALUSTIAN, A .
SPECTROSCOPY LETTERS, 1973, 6 (06) :347-352
[13]  
GRANDJEAN D, 1970, J PHYSIQUE, V30, P471
[14]  
HADNI A, 1957, PHYS REV, V107, P1255
[15]  
KHANNA KR, 1966, SPECTROCHIM ACTA, V22, P1801
[16]  
Krishnan R.S, 1958, P IND ACAD SCI, V48, P138, DOI [10.1007/BF03052762, DOI 10.1007/BF03052762]
[17]   Isotope effect and hydrogen bonding in crystalline hydrazinium hydrogen oxalate, N2H5HC2O4 [J].
Lindgren, J. ;
De Villepin, J. ;
Novak, A. .
CHEMICAL PHYSICS LETTERS, 1969, 3 (02) :84-86
[18]  
MARCHON B, 1985, J CHEM PHYS, V78, P2105
[19]   STRUCTURAL PHASE-TRANSITIONS IN ETHYLENEDIAMMONIUM DINITRATE [J].
MYLRAJAN, M ;
SRINIVASAN, TKK .
PHASE TRANSITIONS, 1988, 12 (04) :285-303
[20]   THE HOLLOW MORPHOLOGY OF SOLUTION GROWN TRIGLYCINE SULFATE PHOSPHATE CRYSTALS [J].
NATARAJAN, V ;
SUBRAMANIAN, C ;
RAMASAMY, P .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (05) :511-512