ONE-DIMENSIONAL J-AGGREGATES IN CRYSTALS OF 1,7-BIS-(DIMETHYLAMINO)-HEPTAMETHINIUM PERCHLORATE

被引：11

作者：

DAHNE, L ^{[1
]}

RECK, G ^{[1
]}

机构：

[1] BUNDESANSTALT MAT FORSCH & PRUFUNG,D-12489 BERLIN,GERMANY

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1995年 / 210卷 / 01期

关键词：

POLYMETHINE DYE; J-AGGREGATE; CRYSTAL STRUCTURE; HEPTAMETHINIUM PERCHLORATE;

D O I：

10.1524/zkri.1995.210.1.40

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The simple polymethine dye 1,7-bis-(dimethylamino)-heptamethinium perchlorate (C11H19ClN2O4) forms in crystals J-aggregates. The crystal structure was determined from single crystal X-ray diffraction data (monoclinic, C2/c, a = 1160.3(5) pm, b = 880.3(4) pm, c = 1524.8(7) pm, beta = 109.7(6)degrees, Z = 4, D-x = 1.263 g/cm(3), T = 293 K, R = 0.103 for 1460 unique reflections I > 1 sigma(I)). The polymethine cations as well as the perchlorate anions are disordered. The molecular structure of the dye depends on the crystalline environment. The main structural feature is the arrangement of dye molecules in one-dimensional staircase aggregates. The dye forms crystals with different habit and color but same crystal structure depending on crystallisation process.

引用

页码：40 / 43

页数：4

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