|
|
|
|
LEADER |
01000naa a22002652 4500 |
001 |
NLM296378453 |
003 |
DE-627 |
005 |
20231225085717.0 |
007 |
cr uuu---uuuuu |
008 |
231225s2019 xx |||||o 00| ||eng c |
024 |
7 |
|
|a 10.1002/mrc.4878
|2 doi
|
028 |
5 |
2 |
|a pubmed24n0987.xml
|
035 |
|
|
|a (DE-627)NLM296378453
|
035 |
|
|
|a (NLM)31017688
|
040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
041 |
|
|
|a eng
|
100 |
1 |
|
|a Hajji, Rachid
|e verfasserin
|4 aut
|
245 |
1 |
0 |
|a Phase transitions in (C7 H12 N2 )2 [SnCl6 ]Cl2 ·1.5H2 O crystal, studied by NMR and infrared spectroscopy
|
264 |
|
1 |
|c 2019
|
336 |
|
|
|a Text
|b txt
|2 rdacontent
|
337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
500 |
|
|
|a Date Completed 17.09.2019
|
500 |
|
|
|a Date Revised 17.09.2019
|
500 |
|
|
|a published: Print-Electronic
|
500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
520 |
|
|
|a © 2019 John Wiley & Sons, Ltd.
|
520 |
|
|
|a The (C7 H12 N2 )2 [SnCl6 ]Cl2 ·1.5H2 O complex is a new member of the family of hybrid organic-inorganic perovskite compounds. It exhibits two order-disorder phase transitions with changes in the conformation of aromatic cations at the two transition temperatures 360 and 412 K. Differential scanning calorimetry, nuclear magnetic resonance (NMR), and Fourier-transform infrared (FT-IR) spectroscopy were used to investigate these phase transitions. These transition mechanisms were investigated in terms of the spin-lattice relaxation times T1 for 1 H static NMR and the chemical shifts for 13 C CP-MAS. The temperature dependence of T1(1 H) and 13 C chemical shifts are changed near TC1 and TC2 . Furthermore, the splitting for 13 C NMR signals in Phases (II) and (III) indicated a ferroelastic characteristic of the compound. In addition, FT-IR results indicate that the ordered conformational structure of aromatic cations undergoes a remarkable disorder with increasing temperature. The NMR and FT-IR studies suggest that the phase transition mechanisms are related to the reorientational motion of [C7 H12 N2 ]2+ cations as a whole. Phase transition was examined in light of the interesting optical properties of this material
|
650 |
|
4 |
|a Journal Article
|
650 |
|
4 |
|a Research Support, Non-U.S. Gov't
|
650 |
|
4 |
|a NMR spectroscopy
|
650 |
|
4 |
|a chlorostannate (IV)
|
650 |
|
4 |
|a crystal structure
|
650 |
|
4 |
|a phase transition
|
650 |
|
4 |
|a relaxation time
|
650 |
|
4 |
|a vibrational spectra
|
700 |
1 |
|
|a Hlel, Faouzi
|e verfasserin
|4 aut
|
773 |
0 |
8 |
|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 57(2019), 8 vom: 24. Aug., Seite 479-488
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
|
773 |
1 |
8 |
|g volume:57
|g year:2019
|g number:8
|g day:24
|g month:08
|g pages:479-488
|
856 |
4 |
0 |
|u http://dx.doi.org/10.1002/mrc.4878
|3 Volltext
|
912 |
|
|
|a GBV_USEFLAG_A
|
912 |
|
|
|a SYSFLAG_A
|
912 |
|
|
|a GBV_NLM
|
912 |
|
|
|a GBV_ILN_350
|
951 |
|
|
|a AR
|
952 |
|
|
|d 57
|j 2019
|e 8
|b 24
|c 08
|h 479-488
|