epsilon-RbCuCl3, a new polymorph of rubidium copper trichloride: synthesis, structure and structural complexity

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

A novel polymorph of RbCuCl3 (rubidiumcopper trichloride), denoted epsilon-RbCuCl3, has been prepared by chemical vapour transport (CVT) from a mixture of CuO, CuCl2, SeO2 and RbCl. The new polymorph crystallizes in the orthorhombic space group C222(1). The crystal structure is based on an octahedral framework of the 4H perovskite type. The Rb+ and Cl- ions form a four-layer closest-packing array with an ABCB sequence. The Cu-2+ cations reside in octahedral cavities with a typical [4 + 2]-Jahn-Teller-distorted coordination, forming four short and two long Cu-Cl bonds. epsilon-RbCuCl3 is the most structurally complex and most dense among all currently known RbCuCl3 polymorphs, which allows us to suggest that it is a high-pressure phase, which is unstable under ambient conditions.

Язык оригиналаанглийский
Страницы (с-по)529-533
Число страниц5
ЖурналActa Crystallographica Section C: Structural Chemistry
Том74
Номер выпуска5
DOI
СостояниеОпубликовано - 1 мая 2018

Отпечаток

Rubidium
rubidium
Polymorphism
Copper
chlorides
vapors
cations
copper
cavities
crystal structure
synthesis
ions
Perovskite
Cations
Crystal structure
Positive ions
Vapors
Ions

Предметные области Scopus

  • Физика конденсатов
  • Физическая и теоретическая химия
  • Неорганическая химия
  • Химия материалов

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abstract = "A novel polymorph of RbCuCl3 (rubidiumcopper trichloride), denoted epsilon-RbCuCl3, has been prepared by chemical vapour transport (CVT) from a mixture of CuO, CuCl2, SeO2 and RbCl. The new polymorph crystallizes in the orthorhombic space group C222(1). The crystal structure is based on an octahedral framework of the 4H perovskite type. The Rb+ and Cl- ions form a four-layer closest-packing array with an ABCB sequence. The Cu-2+ cations reside in octahedral cavities with a typical [4 + 2]-Jahn-Teller-distorted coordination, forming four short and two long Cu-Cl bonds. epsilon-RbCuCl3 is the most structurally complex and most dense among all currently known RbCuCl3 polymorphs, which allows us to suggest that it is a high-pressure phase, which is unstable under ambient conditions.",
keywords = "chemical vapour transport reactions, close packing, copper, crystal structure, hexagonal perovskites, high-pressure polymorph, polymorphs, Shannon information, structural complexity",
author = "Корняков, {Илья Викторович} and Krivovichev, {Sergey V.} and Gurzhiy, {Vladislav V.} and Matteo Leoni",
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epsilon-RbCuCl3, a new polymorph of rubidium copper trichloride : synthesis, structure and structural complexity. / Корняков, Илья Викторович; Krivovichev, Sergey V.; Gurzhiy, Vladislav V.; Leoni, Matteo.

В: Acta Crystallographica Section C: Structural Chemistry, Том 74, № 5, 01.05.2018, стр. 529-533.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - epsilon-RbCuCl3, a new polymorph of rubidium copper trichloride

T2 - synthesis, structure and structural complexity

AU - Корняков, Илья Викторович

AU - Krivovichev, Sergey V.

AU - Gurzhiy, Vladislav V.

AU - Leoni, Matteo

PY - 2018/5/1

Y1 - 2018/5/1

N2 - A novel polymorph of RbCuCl3 (rubidiumcopper trichloride), denoted epsilon-RbCuCl3, has been prepared by chemical vapour transport (CVT) from a mixture of CuO, CuCl2, SeO2 and RbCl. The new polymorph crystallizes in the orthorhombic space group C222(1). The crystal structure is based on an octahedral framework of the 4H perovskite type. The Rb+ and Cl- ions form a four-layer closest-packing array with an ABCB sequence. The Cu-2+ cations reside in octahedral cavities with a typical [4 + 2]-Jahn-Teller-distorted coordination, forming four short and two long Cu-Cl bonds. epsilon-RbCuCl3 is the most structurally complex and most dense among all currently known RbCuCl3 polymorphs, which allows us to suggest that it is a high-pressure phase, which is unstable under ambient conditions.

AB - A novel polymorph of RbCuCl3 (rubidiumcopper trichloride), denoted epsilon-RbCuCl3, has been prepared by chemical vapour transport (CVT) from a mixture of CuO, CuCl2, SeO2 and RbCl. The new polymorph crystallizes in the orthorhombic space group C222(1). The crystal structure is based on an octahedral framework of the 4H perovskite type. The Rb+ and Cl- ions form a four-layer closest-packing array with an ABCB sequence. The Cu-2+ cations reside in octahedral cavities with a typical [4 + 2]-Jahn-Teller-distorted coordination, forming four short and two long Cu-Cl bonds. epsilon-RbCuCl3 is the most structurally complex and most dense among all currently known RbCuCl3 polymorphs, which allows us to suggest that it is a high-pressure phase, which is unstable under ambient conditions.

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