Crystal Structure of Trimethylammonium Perchlorate in Three Solid Phases Including the Ionic Plastic Phase Obtainable above 480 K

Hiroyuki Ishida; Yoshihiro Kubozono; Setsuo Kashino; Ryuichi Ikeda

doi:10.1515/zna-1994-0612

Crystal Structure of Trimethylammonium Perchlorate in Three Solid Phases Including the Ionic Plastic Phase Obtainable above 480 K

Hiroyuki Ishida, Yoshihiro Kubozono, Setsuo Kashino, Ryuichi Ikeda

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

13 Citations (Scopus)

Abstract

The crystal structures of (CH₃)₃NHC1_O4 in three solid phases were studied by X-ray diffraction techniques. X-ray powder patterns taken at ca. 500 and 445 K revealed that the plastic phase (Phase I) attainable above 480 K crystallizes in a CsCl-type cubic structure with a = 5.845 (1) A, Z = 1, V = 199.7 (2) A³, and D_x= 1.327 gcm⁻³, while Phase II, stable between 480 and 396 K, forms a tetragonal structure with a = 9.912 (4), c = 7.01 (2) A, Z = 4, V = 689 (3) A³, and D_x = 1.54 gcm⁻³. The room temperature phase (Phase III) was studied by single crystal X-ray diffraction and found to form a monoclinic lattice with space group P2₁a = 5.749(1), b = 8.670(1), c = 7.5585 (9) A, β = 102.66(1)°, Z = 2, V = 367.6(2) A³, and D_x= 1.441 gcm⁻³. Thermal measurements, differential thermal analysis and differential scanning calorimetry, were carried out on these solid phases, and the obtained results were compared with those observed for (CH₃)₃NHBF₄.

Original language	English
Pages (from-to)	723-726
Number of pages	4
Journal	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume	49
Issue number	6
DOIs	https://doi.org/10.1515/zna-1994-0612
Publication status	Published - Jun 1 1994

Keywords

Crystal structure
Ionic plastic phase
Thermal measurements
X-ray diffraction

ASJC Scopus subject areas

Mathematical Physics
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1515/zna-1994-0612

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Crystal Structure of Trimethylammonium Perchlorate in Three Solid Phases Including the Ionic Plastic Phase Obtainable above 480 K. / Ishida, Hiroyuki ; Kubozono, Yoshihiro; Kashino, Setsuo; Ikeda, Ryuichi.

In: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, Vol. 49, No. 6, 01.06.1994, p. 723-726.

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

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title = "Crystal Structure of Trimethylammonium Perchlorate in Three Solid Phases Including the Ionic Plastic Phase Obtainable above 480 K",

abstract = "The crystal structures of (CH3)3NHC1O4 in three solid phases were studied by X-ray diffraction techniques. X-ray powder patterns taken at ca. 500 and 445 K revealed that the plastic phase (Phase I) attainable above 480 K crystallizes in a CsCl-type cubic structure with a = 5.845 (1) A, Z = 1, V = 199.7 (2) A3, and Dx= 1.327 gcm−3, while Phase II, stable between 480 and 396 K, forms a tetragonal structure with a = 9.912 (4), c = 7.01 (2) A, Z = 4, V = 689 (3) A3, and Dx = 1.54 gcm−3. The room temperature phase (Phase III) was studied by single crystal X-ray diffraction and found to form a monoclinic lattice with space group P21a = 5.749(1), b = 8.670(1), c = 7.5585 (9) A, β = 102.66(1)°, Z = 2, V = 367.6(2) A3, and Dx= 1.441 gcm−3. Thermal measurements, differential thermal analysis and differential scanning calorimetry, were carried out on these solid phases, and the obtained results were compared with those observed for (CH3)3NHBF4.",

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AU - Ishida, Hiroyuki

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AU - Kashino, Setsuo

AU - Ikeda, Ryuichi

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N2 - The crystal structures of (CH3)3NHC1O4 in three solid phases were studied by X-ray diffraction techniques. X-ray powder patterns taken at ca. 500 and 445 K revealed that the plastic phase (Phase I) attainable above 480 K crystallizes in a CsCl-type cubic structure with a = 5.845 (1) A, Z = 1, V = 199.7 (2) A3, and Dx= 1.327 gcm−3, while Phase II, stable between 480 and 396 K, forms a tetragonal structure with a = 9.912 (4), c = 7.01 (2) A, Z = 4, V = 689 (3) A3, and Dx = 1.54 gcm−3. The room temperature phase (Phase III) was studied by single crystal X-ray diffraction and found to form a monoclinic lattice with space group P21a = 5.749(1), b = 8.670(1), c = 7.5585 (9) A, β = 102.66(1)°, Z = 2, V = 367.6(2) A3, and Dx= 1.441 gcm−3. Thermal measurements, differential thermal analysis and differential scanning calorimetry, were carried out on these solid phases, and the obtained results were compared with those observed for (CH3)3NHBF4.

AB - The crystal structures of (CH3)3NHC1O4 in three solid phases were studied by X-ray diffraction techniques. X-ray powder patterns taken at ca. 500 and 445 K revealed that the plastic phase (Phase I) attainable above 480 K crystallizes in a CsCl-type cubic structure with a = 5.845 (1) A, Z = 1, V = 199.7 (2) A3, and Dx= 1.327 gcm−3, while Phase II, stable between 480 and 396 K, forms a tetragonal structure with a = 9.912 (4), c = 7.01 (2) A, Z = 4, V = 689 (3) A3, and Dx = 1.54 gcm−3. The room temperature phase (Phase III) was studied by single crystal X-ray diffraction and found to form a monoclinic lattice with space group P21a = 5.749(1), b = 8.670(1), c = 7.5585 (9) A, β = 102.66(1)°, Z = 2, V = 367.6(2) A3, and Dx= 1.441 gcm−3. Thermal measurements, differential thermal analysis and differential scanning calorimetry, were carried out on these solid phases, and the obtained results were compared with those observed for (CH3)3NHBF4.

KW - Crystal structure

KW - Ionic plastic phase

KW - Thermal measurements

KW - X-ray diffraction

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Crystal Structure of Trimethylammonium Perchlorate in Three Solid Phases Including the Ionic Plastic Phase Obtainable above 480 K

Abstract

Keywords

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