Synthesis, characterization and phase transitions of the inorganic–organic layered perovskite-type hybrids [(CnH2n+1NH3)2PbI4] (n = 12, 14, 16 and 18)

2008 ◽  
Vol 32 (10) ◽  
pp. 1736 ◽  
Author(s):  
David G. Billing ◽  
Andreas Lemmerer
Keyword(s):  
Phase Transitions ◽  
Layered Perovskite ◽  
Perovskite Type

Synthesis, characterization and phase transitions in the inorganic–organic layered perovskite-type hybrids [(C n H2n + 1NH3)2PbI4], n = 4, 5 and 6

2007 ◽  
Vol 63 (5) ◽  
pp. 735-747 ◽  
Author(s):  
David G. Billing ◽  
Andreas Lemmerer
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Layered Perovskite ◽  
Temperature Phase ◽  
Two Phase ◽  
Structural Details ◽  
Temperature Phase Transition ◽  
Higher Temperature ◽  
First Order Phase ◽  
Perovskite Type

Three inorganic–organic layered perovskite-type hybrids of the general formula [(C n H2n + 1NH3)2PbI4], n = 4, 5 and 6, display a number of reversible first-order phase transitions in the temperature range from 256 to 393 K. [(C4H9NH3)2PbI4] has a single phase transition, [(C5H11NH3)2PbI4] has two phase transitions and [(C6H13NH3)2PbI4] has three phase transitions. In all three cases, the lowest-temperature phase transition is thermochromic and the crystals change colour from yellow in their lowest-temperature phase to orange in their higher-temperature phase for [(C4H9NH3)2PbI4] and [(C6H13NH3)2PbI4], and from orange to red for [(C5H11NH3)2PbI4]. The structural details associated with this phase transition have been investigated via single-crystal X-ray diffraction, SC-XRD, for all three compounds.

scholarly journals Thermal, ferroelastic, and structural properties near phase transitions of organic–inorganic perovskite type [NH3(CH2)3NH3]CdBr4 crystals

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17622-17629
Author(s):  
Ae Ran Lim
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Thermal Behavior ◽  
Structural Properties ◽  
Structural Dynamics ◽  
Transition Temperatures ◽  
Inorganic Perovskite ◽  
Phase Transition Temperatures ◽  
Perovskite Type

We studied the thermal behavior and structural dynamics of [NH3(CH2)3NH3]CdBr4 near phase transition temperatures.

A New Flux, NaCl, to Grow Layered Perovskite-Type Na2Ca2Nb4O13Crystals

1999 ◽  
Vol 28 (10) ◽  
pp. 1011-1012 ◽  
Author(s):  
Shuji Oishi ◽  
Masaya Kanoh ◽  
Nobuo Ishizawa
Keyword(s):  
Layered Perovskite ◽  
Perovskite Type

scholarly journals Crystal structures of isotypic poly[bis(benzimidazolium) [tetra-μ-iodido-stannate(II)]] and poly[bis(5,6-difluorobenzimidazolium) [tetra-μ-iodido-stannate(II)]]

2014 ◽  
Vol 70 (10) ◽  
pp. 178-182 ◽  
Author(s):  
Iwan Zimmermann ◽  
Tony D. Keene ◽  
Jürg Hauser ◽  
Silvio Decurtins ◽  
Shi-Xia Liu
Keyword(s):  
Hydrogen Bonds ◽  
Point Group ◽  
Van Der Waals Interactions ◽  
Group Symmetry ◽  
Layered Perovskite ◽  
Out Of Plane ◽  
Related Compounds ◽  
Perovskite Type ◽  
Inorganic Layers ◽  
Perovskite Type Structure

The isostructural title compounds, {(C7H7N2)2[SnI4]}n, (1), and {(C7H5F2N2)2[SnI4]}n, (2), show a layered perovskite-type structure composed of anionic {[SnI4]2−}nsheets parallel to (100), which are decorated on both sides with templating benzimidazolium or 5,6-difluorobenzimidazolium cations, respectively. These planar organic heterocycles mainly form N—H...I hydrogen bonds to the terminal I atoms of the corner-sharing [SnI6] octahedra (point group symmetry 2) from the inorganic layer, but not to the bridging ones. This is in contrast to most of the reported structures of related compounds where ammonium cations are involved. Here hydrogen bonding to both types of iodine atoms and thereby a distortion of the inorganic layers to various extents is observed. For (1) and (2), all Sn—I—Sn angles are linear and no out-of-plane distortions of the inorganic layers occur, a fact of relevance in view of the material properties. The arrangement of the aromatic cations is mainly determined through the direction of the N—H...I hydrogen bonds. The coherence between organic bilayers along [100] is mainly achieved through van der Waals interactions.

Novel bimetallic MOF phosphors with an imidazolium cation: structure, phonons, high- pressure phase transitions and optical response

2019 ◽  
Vol 48 (1) ◽  
pp. 242-252 ◽  
Author(s):  
Maciej Ptak ◽  
Bartosz Zarychta ◽  
Dagmara Stefańska ◽  
Aneta Ciupa ◽  
Waldeci Paraguassu
Keyword(s):  
High Pressure ◽  
Optical Properties ◽  
Phase Transitions ◽  
Optical Response ◽  
High Pressure Phase ◽  
Imidazolium Cation ◽  
Perovskite Type ◽  
Pressure Phase

We report the synthesis, high-pressure phase transitions and optical properties of novel bimetallic perovskite-type MOFs with imidazolium ions.

scholarly journals Structural and electrical properties of layered perovskite type Pr2Ti2O7: experimental and theoretical investigations

2015 ◽  
Vol 3 (17) ◽  
pp. 4570-4584 ◽  
Author(s):  
Sadequa J. Patwe ◽  
Vasundhara Katari ◽  
Nilesh P. Salke ◽  
Sudhanshu K. Deshpande ◽  
Rekha Rao ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Electrical Properties ◽  
Spectroscopic Studies ◽  
Layered Perovskite ◽  
Raman Spectroscopic ◽  
Structural And Electrical Properties ◽  
Theoretical Investigations ◽  
Higher Temperature ◽  
Perovskite Type

In this communication we report the details of the structural and thermal properties of monoclinic layered perovskite type Pr2Ti2O7 (PTO) using ambient to higher temperature XRD and Raman spectroscopic studies.

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