**1 H NMR STUDY OF SOLID ETHYLAMMONIUM AND PROPYLAMMONIUM NITRATES. CATION MOTIONS IN THE STABLE AND METASTABLE PHASES.

Hiroyuki Ishida, Alarich Weiss

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The **1H-NMR spin lattice relaxation times, T//1, were observed for ethylammonium nitrate, (CH//3CH//2NH//3)NO//3, and propylammoniumnitrate, (CH//3CH//2CH//2NH//3)NO//3, and for their partially deuterated analogs, (CH//3CH//2ND//3)NO//3, and CH//3(CH//2)//2ND//3NO//3, respectively. For each salt two solid phases were found, one of them being metastable and existing below ca. 200 K and ca. 210 K for the ethylammonium nitrate and propylammonium nitrate, respectively. The results of the T//1 measurements are consistent with the assumption that CH//3 and NH//3 group reorientations about their C-C and C-N bond axes take place in the stable and in the metastable phase of both salts.

Original languageEnglish
Pages (from-to)511-514
Number of pages4
JournalBerichte der Bunsengesellschaft/Physical Chemistry Chemical Physics
Volume92
Issue number4
Publication statusPublished - Apr 1988
Externally publishedYes

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Metastable phases
Nitrates
Cations
Salts
Positive ions
Nuclear magnetic resonance
Spin-lattice relaxation
Relaxation time
ethylammonium

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

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title = "**1 H NMR STUDY OF SOLID ETHYLAMMONIUM AND PROPYLAMMONIUM NITRATES. CATION MOTIONS IN THE STABLE AND METASTABLE PHASES.",
abstract = "The **1H-NMR spin lattice relaxation times, T//1, were observed for ethylammonium nitrate, (CH//3CH//2NH//3)NO//3, and propylammoniumnitrate, (CH//3CH//2CH//2NH//3)NO//3, and for their partially deuterated analogs, (CH//3CH//2ND//3)NO//3, and CH//3(CH//2)//2ND//3NO//3, respectively. For each salt two solid phases were found, one of them being metastable and existing below ca. 200 K and ca. 210 K for the ethylammonium nitrate and propylammonium nitrate, respectively. The results of the T//1 measurements are consistent with the assumption that CH//3 and NH//3 group reorientations about their C-C and C-N bond axes take place in the stable and in the metastable phase of both salts.",
author = "Hiroyuki Ishida and Alarich Weiss",
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T1 - **1 H NMR STUDY OF SOLID ETHYLAMMONIUM AND PROPYLAMMONIUM NITRATES. CATION MOTIONS IN THE STABLE AND METASTABLE PHASES.

AU - Ishida, Hiroyuki

AU - Weiss, Alarich

PY - 1988/4

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N2 - The **1H-NMR spin lattice relaxation times, T//1, were observed for ethylammonium nitrate, (CH//3CH//2NH//3)NO//3, and propylammoniumnitrate, (CH//3CH//2CH//2NH//3)NO//3, and for their partially deuterated analogs, (CH//3CH//2ND//3)NO//3, and CH//3(CH//2)//2ND//3NO//3, respectively. For each salt two solid phases were found, one of them being metastable and existing below ca. 200 K and ca. 210 K for the ethylammonium nitrate and propylammonium nitrate, respectively. The results of the T//1 measurements are consistent with the assumption that CH//3 and NH//3 group reorientations about their C-C and C-N bond axes take place in the stable and in the metastable phase of both salts.

AB - The **1H-NMR spin lattice relaxation times, T//1, were observed for ethylammonium nitrate, (CH//3CH//2NH//3)NO//3, and propylammoniumnitrate, (CH//3CH//2CH//2NH//3)NO//3, and for their partially deuterated analogs, (CH//3CH//2ND//3)NO//3, and CH//3(CH//2)//2ND//3NO//3, respectively. For each salt two solid phases were found, one of them being metastable and existing below ca. 200 K and ca. 210 K for the ethylammonium nitrate and propylammonium nitrate, respectively. The results of the T//1 measurements are consistent with the assumption that CH//3 and NH//3 group reorientations about their C-C and C-N bond axes take place in the stable and in the metastable phase of both salts.

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