Crystal structure of the incommensurate modulated high-pressure phase of the potassium guaninate monohydrate

被引：0

作者：

Gaydamaka, A. A. ^{[1
]}

Rashchenko, S. V. ^{[1
]}

机构：

[1] Inst Geol & Mineral SB RAS, Koptyug Ave 3, Novosibirsk 630090, Russia

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS | 2024年 / 80卷

基金：

俄罗斯科学基金会;

关键词：

high pressure; incommensurate modulated phase; crystallography; guanine; nucleobases; X-RAY-DIFFRACTION; SUPERSPACE DESCRIPTION; LAYERED STRUCTURES; HYDROGEN-BONDS; COMPOSITE; PEROVSKITE; REFINEMENT; COMPOUND; TRANSITIONS; TEMPERATURE;

D O I：

10.1107/S2052520624008710

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structure of the incommensurate modulated phase of potassium guaninate monohydrate has been solved on the basis of high-pressure single- crystal X-ray diffraction data. The modulated structure was described as a 'mosaic' sequence of three different local configurations of two neighbouring guaninate rings. In contrast to known examples of incommensurate modulated organic compounds, the modulation functions of all atoms are discontinuous. This is the first example of the experimental detection of an incommensurate modulated crystal structure that can be modelled using the special 'soliton mode' modulation function proposed by Aramburu et al. [(1995), J. Phys. Condens. Matter, 7, 6187-6196].

引用

页码：676 / 681

页数：6

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