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Title: Molecular and ionic phases of solid nitrosyl chloride at low temperature

Abstract

The discovery of two solid phases of nitrosyl chloride is reported. ONCl-II is stable in the range 85-203 K and is composed of dimers of the ONCl molecule. The absence of the NO stretch in this phase from 136 to 203 K is caused by dephasing due to thermal occupation of a torsional mode of the dimer, which appears at 117 cm{sup {minus}1} and is not observed over the same temperature range. Within the molecular phase, dramatic softening of both the N-Cl stretch and ONCl bend occurs as temperature is reduced. ONCl-I is stable over the range 13-85 K and represents an ionic phase of ONCl with at least 2 NO{sup +}Cl{sup {minus}}/primitive unit. The transition from ONCl-II to ONCl-I is first order with substantial hysteresis and is accompanied by the coalescence of intra- and intermolecular N-Cl modes.

Authors:
; ;  [1]
  1. Los Alamos National Lab., NM (USA)
Publication Date:
OSTI Identifier:
6986014
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry; (USA)
Additional Journal Information:
Journal Volume: 93:23; Journal ID: ISSN 0022-3654
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; NITROSO COMPOUNDS; PHASE STUDIES; CHLORIDES; DATA ANALYSIS; EXPERIMENTAL DATA; MEASURING INSTRUMENTS; MEASURING METHODS; SOLIDS; CHLORINE COMPOUNDS; DATA; HALIDES; HALOGEN COMPOUNDS; INFORMATION; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; 400000* - Chemistry; 400200 - Inorganic, Organic, & Physical Chemistry

Citation Formats

Killough, P M, Swanson, B I, and Agnew, S F. Molecular and ionic phases of solid nitrosyl chloride at low temperature. United States: N. p., 1989. Web. doi:10.1021/j100360a041.
Killough, P M, Swanson, B I, & Agnew, S F. Molecular and ionic phases of solid nitrosyl chloride at low temperature. United States. https://doi.org/10.1021/j100360a041
Killough, P M, Swanson, B I, and Agnew, S F. 1989. "Molecular and ionic phases of solid nitrosyl chloride at low temperature". United States. https://doi.org/10.1021/j100360a041.
@article{osti_6986014,
title = {Molecular and ionic phases of solid nitrosyl chloride at low temperature},
author = {Killough, P M and Swanson, B I and Agnew, S F},
abstractNote = {The discovery of two solid phases of nitrosyl chloride is reported. ONCl-II is stable in the range 85-203 K and is composed of dimers of the ONCl molecule. The absence of the NO stretch in this phase from 136 to 203 K is caused by dephasing due to thermal occupation of a torsional mode of the dimer, which appears at 117 cm{sup {minus}1} and is not observed over the same temperature range. Within the molecular phase, dramatic softening of both the N-Cl stretch and ONCl bend occurs as temperature is reduced. ONCl-I is stable over the range 13-85 K and represents an ionic phase of ONCl with at least 2 NO{sup +}Cl{sup {minus}}/primitive unit. The transition from ONCl-II to ONCl-I is first order with substantial hysteresis and is accompanied by the coalescence of intra- and intermolecular N-Cl modes.},
doi = {10.1021/j100360a041},
url = {https://www.osti.gov/biblio/6986014}, journal = {Journal of Physical Chemistry; (USA)},
issn = {0022-3654},
number = ,
volume = 93:23,
place = {United States},
year = {Thu Nov 16 00:00:00 EST 1989},
month = {Thu Nov 16 00:00:00 EST 1989}
}