scholarly journals Thermodynamic Properties, Structural Characteristics, and Cation Dynamics of Perovskite-Type Layer Crystal [NH3(CH2)2NH3]ZnCl4

ACS Omega ◽  
2020 ◽  
Vol 5 (48) ◽  
pp. 31417-31422
Author(s):  
Ae Ran Lim
Keyword(s):  
Thermodynamic Properties ◽  
Structural Characteristics ◽  
Type Layer ◽  
Perovskite Type

scholarly journals Advances and Physicochemical Property Investigations by Methylene Chain Length of Perovskite-type Layer Crystals [NH3(CH2)nNH3]CdCl4 (n=2, 3, and 4)

2021 ◽  
Author(s):  
Ae Ran Lim
Keyword(s):  
Molecular Dynamics ◽  
Structural Characteristics ◽  
Mas Nmr ◽  
X Ray Diffraction ◽  
Thermal Stabilities ◽  
Type Layer ◽  
Phase Transition Temperatures ◽  
Potential Applications ◽  
The Difference ◽  
Perovskite Type

Abstract Hybrid perovskites have potential applications in several electrochemical devices such as supercapacitors, batteries, and fuel cells. However, despite various potential applications, there have been limited studies on compounds containing Cd. Therefore, in this study, the structures and phase transition temperatures TC of organic–inorganic perovskite [NH3(CH2)nNH3]CdCl4 (n=2, 3, and 4) were confirmed by X-ray diffraction and DSC experiments. The thermal stabilities obtained by TGA and DTA results were considered as a function of the length n of the CH2 groups in the cation. In addition, structural characteristics and molecular dynamics of the cation and anion near TC were studied by 1H MAS NMR, 13C MAS NMR, 14N static NMR, and 113Cd MAS NMR experiments. From these results, regardless of whether n is even or odd, the differences in thermal and physical properties were minimal. Rather, the difference in molecular motion relative to the length of the cation was seen only at higher temperatures. These results provide insights into the thermal stability and molecular dynamics of [NH3(CH2)nNH3]CdCl4 crystals and are expected to facilitate potential applications.

Low temperature reentrant phase transition in the perovskite type layer compound (C3H7NH3)2PbCl4

1992 ◽  
Vol 40 (1-4) ◽  
pp. 239-247 ◽  
Author(s):  
Y. Abid ◽  
M. Kamoun ◽  
A. Daoud ◽  
F. Romain ◽  
A. Lautie
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Layer Compound ◽  
Type Layer ◽  
Perovskite Type

Phonon dispersion in the perovskite-type layer material K2ZnF4

1983 ◽  
Vol 115 (2) ◽  
pp. 463-470 ◽  
Author(s):  
H. Rauh ◽  
R. Geick ◽  
N. Lehner ◽  
J. Bouillot ◽  
G. Eckold
Keyword(s):  
Phonon Dispersion ◽  
Layer Material ◽  
Type Layer ◽  
Perovskite Type

ΔS°t – as a Structural Probe – a Critical Analysis of the Method and Determination of Structure of Aquo-Alcoholic Mixtures

2003 ◽  
Vol 217 (6) ◽  
pp. 615-636 ◽  
Author(s):  
S. K. Gumtya ◽  
G. Bandyopadhyay ◽  
S. C. Lahiri
Keyword(s):  
Thermodynamic Properties ◽  
Structural Characteristics ◽  
Solvent System ◽  
Mirror Image ◽  
Critical Examination ◽  
Solvent Mixtures ◽  
Structural Probe ◽  
Thermodynamic Measurements ◽  
Alcoholic Mixtures ◽  
Errors Analysis

AbstractAttempts were made for a critical examination of the use of ΔS°t as a structural probe to study the ion induced perturbations on aquo-alcoholic solvent mixtures. The division of the thermodynamic properties of TATB (tetraphenyl arsonium tetraphenyl borate) in solution into equal parts is not free from defects. Naturally, the calculation of single ion values based on TATB is also problematic. Dissection of the single ion values like TΔS°t(ion) as suggested by Kundu is full of errors. Analysis shows TΔS°t(ion) to be an insensitive parameter to determine the structural characteristics of aquo-alcoholic mixtures. Structure of aquo-alcoholic mixtures should be determined from the excess thermodynamic properties of mixing, excess dielectric properties of mixing, excess polarizabilities, the correlation parameter “g” etc. Other properties like ultrasonic sound absorption, excess volume and viscosity of mixing were found to be useful. Ion induced perturbations of any solvent system will be dictated by the structure of the particular solvent system. A knowledge of the structure of the aquo-alcoholic mixtures is imperative to develop an idea regarding ion induced perturbations as mirror image relations because of compensation of ΔH° and TΔS° (and of ΔH°t and TΔS°t) will be observed in any solvent system. The thermodynamic measurements provide a summary of all interaction energies over a long time. To comprehend the rational structural details of the solvent systems, accurate thermodynamic measurements alongwith relaxation experiments providing high time and good structural resolutions are necessary.

Microscopic Observation of Twins in Perovskite-Type Layer Compound (C3H7NH3)2MnCl4

1989 ◽  
Vol 58 (5) ◽  
pp. 1866-1867 ◽  
Author(s):  
Kazuhiro Yamada ◽  
Hiroshi Orihara ◽  
Yoshihiro Ishibashi
Keyword(s):  
Microscopic Observation ◽  
Layer Compound ◽  
Type Layer ◽  
Perovskite Type
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