An x-ray and nuclear magnetic resonance study of structure and ion motions in (C(NH<inf>2</inf>)<inf>3</inf>)<inf>3</inf>AlF<inf>6</inf>

Grottel, M.; Kozak, Asja; Maluszyriska, H.; Pająk, Zdzisław

doi:10.1088/0953-8984/4/7/022

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An x-ray and nuclear magnetic resonance study of structure and ion motions in (C(NH2)3)3AlF6

Authors:

M. Grottel,
Asja Kozak,
H. Maluszyriska,
Zdzisław Pająk

Abstract

Guanidinium hexafluoroaluminate (C(NH₂)₃) ₃AlF₆ crystallizes in a cubic system in the space group P2₁/a3,a=13.953(2) AA, Z=8. The guanidinium cation does not exhibit any symmetry; the hexafluoroaluminate anion has 3 symmetry and occupies two inequivalent (4a) and (4b) positions. The ions are connected by relatively strong N-H...F hydrogen bonds. Proton and fluorine spin-lattice relaxation times as well as second moments have been measured over a wide range of temperatures. The analysis of all cross-relaxation effects for the system of four unlike spins has been performed. Activation parameters for the C₃ reorientation of the cation and for the NH₂ group motion have been derived. Unlike in other guanidinium salts, anion reorientation is hindered by a much higher energy barrier than cation reorientation.

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Record ID: UAMe67528b7002640f489c90424fe24696b
Author: M. Grottel M. Grottel,, External affiliation of publication: Uniwersytet Przyrodniczy w Poznaniu
Asja Kozak Asja Kozak,, Wydział Fizyki [nowa struktura organizacyjna] (SNŚ/WyF)Szkoła Nauk Ścisłych [nowa struktura organizacyjna] (SNŚ)
H. Maluszyriska H. Maluszyriska,, External affiliation of publication: Uniwersytet Przyrodniczy w Poznaniu
Zdzisław Pająk Zdzisław Pająk,, Wydział Fizyki [nowa struktura organizacyjna] (SNŚ/WyF)Szkoła Nauk Ścisłych [nowa struktura organizacyjna] (SNŚ)
Journal series: Journal of Physics-Condensed Matter, ISSN 0953-8984, [1361-648X]
Issue year: 1992
Vol: 4
Pages: 1837-1848
ASJC Classification: 3104 Condensed Matter Physics; 2500 General Materials Science
DOI: DOI:10.1088/0953-8984/4/7/022 Opening in a new tab
Language: (en) English
Score (nominal): 0
Score source: journalList
Publication indicators: Scopus Citations = 23; Scopus SNIP: 1999 = 1.127; WoS Impact Factor: 2006 (2 years) = 2.038 - 2007 (5 years) =2.172

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Uniform Resource Identifier: https://researchportal.amu.edu.pl/info/article/UAMe67528b7002640f489c90424fe24696b/

URN: urn:amu-prod:UAMe67528b7002640f489c90424fe24696b

* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.