Phase transition and dynamic structure in the toluene clathrate of t-butylcalix[4]arene

被引:25
作者
Facey, G. A. [1 ]
Dubois, R. H. [2 ]
Zakrzewski, M. [1 ]
Ratcliffe, C. I. [1 ]
Atwood, J. L. [2 ]
Ripmeester, J. A. [1 ]
机构
[1] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R9, Canada
[2] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA
关键词
D O I
10.1080/10610279308035162
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Variable temperature solid-state C-13 NMR and differential scanning calorimetry were used to show that the toluene clathrate of t-butylcalix [4] arene undergoes a symmetry lowering phase transition at 248.0K. H-2 NMR was used to show that the high symmetry of the complex at room temperature is due to dynamic disorder of the toluene guest, which is most easily described as an axial rotor.
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页码:199 / 200
页数:2
相关论文
共 3 条
[1]   CRYSTAL AND MOLECULAR-STRUCTURE OF CYCLO(QUATER[(5-TERT-BUTYL-2-HYDROXY-1,3-PHENYLENE)METHYLENE]) TOLUENE (1-1) CLATHRATE [J].
ANDREETTI, GD ;
UNGARO, R ;
POCHINI, A .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1979, (22) :1005-1007
[2]  
Gutsche C.D., 1991, INCLUSION COMPOUNDS, V4
[3]   A C-13 CROSS POLARIZATION MAGIC ANGLE SPINNING NMR-STUDY OF THE STRUCTURE OF P-T-BUTYLCALIX[4]ARENE TOLUENE CLATHRATE IN THE CRYSTALLINE STATE [J].
KOMOTO, T ;
ANDO, I ;
NAKAMOTO, Y ;
ISHIDA, S .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1988, (02) :135-136