STRUCTURE OF TETRAKIS(DIMETHYLAMINO)ETHENE (TDAE) AT LOW-TEMPERATURES

被引：9

作者：

BRUCKMANN, J

KRUGER, C

BORRMANN, H

SIMON, A

BOCK, H

机构：

[1] MAX PLANCK INST KOHLENFORSCH,D-45470 MULHEIM,GERMANY

[2] MAX PLANCK INST FESTKORPERFORSCH,D-70569 STUTTGART,GERMANY

[3] UNIV FRANKFURT,INST CHEM,D-60439 FRANKFURT,GERMANY

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1995年 / 210卷 / 07期

关键词：

TDAE; CRYSTAL STRUCTURE; PHASE TRANSITIONS;

D O I：

10.1524/zkri.1995.210.7.521

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The single crystal structure of TDAE was redetermined at different temperatures. Phase transitions are observed by warming the samples from low temperatures but never by cooling. Due to this special behavior it was possible to cool single crystals to 90 K. The data collected from such supercooled crystals resulted in a more precise and reliable structure refinement. Interesting structural details of the sterically overcrowded molecule are elucidated. The temperature dependence of the distortions of the nonplanar dimethylamino groups indicates dynamic behavior rather than static disorder.

引用

页码：521 / 524

页数：4

共 6 条

[1]

Bock H., 1991, ANGEW CHEM, V103, P1733

[2] PROGRAMMED CRYSTAL-GROWTH ON A DIFFRACTOMETER WITH FOCUSED HEAT RADIATION [J].