Pulsed neutron diffraction study of NaNO2 and KNO2 pure melts

Yasuhiko Iwadate; Takumi Harada; Takahiro Ohkubo; Kazuko Fukushima; Masakatsu Misawa; Toshiharu Fukunaga; Keiji Itoh

doi:10.5796/electrochemistry.77.741

Pulsed neutron diffraction study of NaNO₂ and KNO₂ pure melts

Yasuhiko Iwadate, Takumi Harada, Takahiro Ohkubo, Kazuko Fukushima, Masakatsu Misawa, Toshiharu Fukunaga, Keiji Itoh

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The short-range structural parameters for NaNO₂ and KNO ₂ pure melts were determined by the time-of-flight neu-tron diffraction. The precise analyses of structural parameters obtained such as coordination number, interatomic distance, and temperature factor allowed us to conclude that (1) there exist stable NO₂- anions in the melts, (2) NO₂^- anions behave like NO₃^- anions due to the existence of lone pairs of electrons, (3) the short-range structure of KNO₂ pure melt is similar to that of NaNO₂ pure melt but the cation site relative to anion is a little different from each other in terms of the cation size effect.

Original language	English
Pages (from-to)	741-744
Number of pages	4
Journal	Electrochemistry
Volume	77
Issue number	8
DOIs	https://doi.org/10.5796/electrochemistry.77.741
Publication status	Published - Aug 2009
Externally published	Yes

Keywords

KNO
Local structure
NaNO
Pulsed neutron diffraction
Pure melt

ASJC Scopus subject areas

Electrochemistry

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abstract = "The short-range structural parameters for NaNO2 and KNO 2 pure melts were determined by the time-of-flight neu-tron diffraction. The precise analyses of structural parameters obtained such as coordination number, interatomic distance, and temperature factor allowed us to conclude that (1) there exist stable NO2- anions in the melts, (2) NO2- anions behave like NO3- anions due to the existence of lone pairs of electrons, (3) the short-range structure of KNO2 pure melt is similar to that of NaNO2 pure melt but the cation site relative to anion is a little different from each other in terms of the cation size effect.",

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AU - Iwadate, Yasuhiko

AU - Harada, Takumi

AU - Ohkubo, Takahiro

AU - Fukushima, Kazuko

AU - Misawa, Masakatsu

AU - Fukunaga, Toshiharu

AU - Itoh, Keiji

PY - 2009/8

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AB - The short-range structural parameters for NaNO2 and KNO 2 pure melts were determined by the time-of-flight neu-tron diffraction. The precise analyses of structural parameters obtained such as coordination number, interatomic distance, and temperature factor allowed us to conclude that (1) there exist stable NO2- anions in the melts, (2) NO2- anions behave like NO3- anions due to the existence of lone pairs of electrons, (3) the short-range structure of KNO2 pure melt is similar to that of NaNO2 pure melt but the cation site relative to anion is a little different from each other in terms of the cation size effect.

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