Investigation of the structure and properties of K{sub 9}H{sub 7}(SO{sub 4}){sub 8} {center_dot} H{sub 2}O single crystals
Journal Article
·
· Crystallography Reports
- Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)
The features of the conductivity of K{sub 9}H{sub 7}(SO{sub 4}){sub 8} {center_dot} H{sub 2}O single-crystal samples in the temperature range of superprotonic phase transition have been investigated. The K{sub 9}H{sub 7}(SO{sub 4}){sub 8} {center_dot} H{sub 2}O crystal structure is determined and refined taking into account hydrogen atoms by X-ray diffraction analysis at a temperature of 295 K: monoclinic symmetry, sp. gr. P2{sub 1}/c, Z = 4, a = 7.059(1), b = 19.773(1), c = 23.449(1) Angstrom-Sign , {beta} = 95.33(1) Degree-Sign , R{sub 1}/wR{sub 2} = 2.71/1.71. The structural data obtained suggest that the occurrence of high conductivity in K{sub 9}H{sub 7}(SO{sub 4}){sub 8} {center_dot} H{sub 2}O crystals with an increase in temperature is related to the diffusion of crystallization water and motion of K ions, as well as to the transformation of the system of hydrogen bonds and protonic motion. The stabilization of the high-temperature superprotonic phase and its supercooling to low temperatures are due to the presence of channels for the motion of K ions and slow backward diffusion of water in the crystal.
- OSTI ID:
- 22054249
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 6 Vol. 56; ISSN 1063-7745; ISSN CYSTE3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Temperature-induced changes in the single-crystal structure of K{sub 9}H{sub 7}(SO{sub 4}){sub 8} {center_dot} H{sub 2}O
X-ray diffraction study of R{sub 2}[UO{sub 2}(C{sub 3}H{sub 2}O{sub 4}){sub 2}] {center_dot}H{sub 2}O (R = K or Rb)
The Influence of Cation Substitution on the Kinetics of Phase Transitions in Crystals of (K,NH{sub 4}){sub 3}H(SO{sub 4}){sub 2} Solid Solutions
Journal Article
·
Wed May 15 00:00:00 EDT 2013
· Crystallography Reports
·
OSTI ID:22113627
X-ray diffraction study of R{sub 2}[UO{sub 2}(C{sub 3}H{sub 2}O{sub 4}){sub 2}] {center_dot}H{sub 2}O (R = K or Rb)
Journal Article
·
Thu Mar 15 00:00:00 EDT 2012
· Crystallography Reports
·
OSTI ID:22054182
The Influence of Cation Substitution on the Kinetics of Phase Transitions in Crystals of (K,NH{sub 4}){sub 3}H(SO{sub 4}){sub 2} Solid Solutions
Journal Article
·
Thu Mar 15 00:00:00 EDT 2018
· Crystallography Reports
·
OSTI ID:22758266