A high-pressure single-crystal X-ray diffraction study of potassium guaninate hydrate, K+•C5H4N5O-•H2O

被引：2

作者：

Gaydamaka, Anna A. ^{[1
,2
]}

Rashchenko, Sergey, V ^{[1
,3
]}

Semerikova, Anna, I ^{[1
,3
]}

Smirnova, Ekaterina S. ^{[4
]}

Ivanova, Anna G. ^{[4
]}

Arkhipov, Sergey G. ^{[1
,2
]}

Zakharov, Boris A. ^{[1
,2
]}

Bogdanov, Nikita E. ^{[1
,2
]}

Boldyreva, Elena, V ^{[1
,2
]}

机构：

[1] Novosibirsk State Univ, Pirogova St 2, Novosibirsk 630090, Russia

[2] Boreskov Inst Catalysis SB Ras, Lavrentiev Ave 5, Novosibirsk 630090, Russia

[3] VS Sobolev Inst Geol & Mineral SB Ras, Koptyug Ave 3, Novosibirsk 630090, Russia

[4] FSRC Crystallog & Photon RAS, Leninskii Ave 59, Moscow 119333, Russia

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS | 2023年 / 79卷

关键词：

guanine; high pressure; XRD; strain anisotropy; nucleobase; intermolecular interactions; incommensurate modulation; CONDITIONS BEAMLINE P02.2; PHASE-TRANSITIONS; ALPHA-POLYMORPH; GAMMA-POLYMORPH; LATTICE STRAIN; STRUCTURAL DISTORTION; INCREASING PRESSURE; LOW-TEMPERATURES; KINETIC CONTROL; 100; K;

D O I：

10.1107/S2052520623008740

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structure of potassium guaninate hydrate, K+center dot C5H4N5O-center dot H2O, was studied in the pressure range of 1 atm to 7.3 GPa by single-crystal diffraction using synchrotron radiation and a laboratory X-ray diffraction source. Structural strain was compared to that of the same salt hydrate on cooling, and in 2Na(+)center dot C5H3N5O2-center dot 7H(2)O under hydrostatic compression and on cooling. A polymorphic transition into a new, incommensurately modulated, phase was observed at similar to 4-5 GPa. The transition was reversible with a hysteresis: the satellite reflections disappeared on decompression to similar to 1.4 GPa.

引用

页码：495 / 509

页数：15

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