The cooperative Jahn–Teller distorted structures of rubidium chromium(II) trichloride and caesium chromium(II) trichloride

Crama, W. J.; Maaskant, W.J.A.; Verschoor, G. C.

doi:10.1107/s0567740878007104

Cited by 35 publications

(10 citation statements)

References 4 publications

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“…This is part of a research programme on the structural relations of compounds ABX3, where A represents an alkaline or an alkaline-earth metal, B a transition metal and X a halogen or S ( van Loon & 0567-7408/80/102223-04501.00 Verschoor, 1973;van Loon, 1974;Crama, Maaskant & Verschoor, 1978;Lelieveld & IJdo, 1978).…”

Section: Introductionmentioning

confidence: 99%

Sulphides with the GdFeO₃ structure

Lelieveld¹,

IJdo²

1980

Acta Crystallogr B Struct Sci

174

140

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Section: Introductionmentioning

confidence: 99%

Sulphides with the GdFeO₃ structure

Lelieveld¹,

IJdo²

1980

Acta Crystallogr B Struct Sci

174

140

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“…Rb),24,25 the binary phase CrS, represents one of the few previously characterised examples of such a distortion in a sulphide 26. The erbium ions exhibit two different coordination environments, octahedral and monocapped trigonal prismatic, with average Er-S bond lengths of ca.…”

mentioning

confidence: 99%

Ternary Erbium Chromium Sulfides: Structural Relationships and Magnetic Properties

et al. 2008

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Single crystals of four erbium-chromium sulfides have been grown by chemical vapor transport using iodine as the transporting agent. Single-crystal X-ray diffraction reveals that in Er(3)CrS(6) octahedral sites are occupied exclusively by Cr(3+) cations, leading to one-dimensional CrS(4)(5-) chains of edge-sharing octahedra, while in Er(2)CrS(4), Er(3+), and Cr(2+) cations occupy the available octahedral sites in an ordered manner. By contrast, in Er(6)Cr(2)S(11) and Er(4)CrS(7), Er(3+) and Cr(2+) ions are disordered over the octahedral sites. In Er(2)CrS(4), Er(6)Cr(2)S(11), and Er(4)CrS(7), the network of octahedra generates an anionic framework constructed from M(2)S(5) slabs of varying thickness, linked by one-dimensional octahedral chains. This suggests that these three phases belong to a series in which the anionic framework may be described by the general formula [M(2n+1)S(4n+3)](x-), with charge balancing provided by Er(3+) cations located in sites of high-coordination number within one-dimensional channels defined by the framework. Er(4)CrS(7), Er(6)Cr(2)S(11), and Er(2)CrS(4) may thus be considered as the n = 1, 2, and infinity members of this series. While Er(4)CrS(7) is paramagnetic, successive magnetic transitions associated with ordering of the chromium and erbium sub-lattices are observed on cooling Er(3)CrS(6) (T(C)(Cr) = 30 K; T(C)(Er) = 11 K) and Er(2)CrS(4) (T(N)(Cr) = 42 K, T(N)(Er) = 10 K) whereas Er(6)Cr(2)S(11) exhibits ordering of the chromium sub-lattice only (T(N) = 11.4 K).

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“…Ternary halides containing Cr 2+ or Cu 2+ undergo structural phase transitions caused by the co-operative Jahn-Teller effect (Crama et al, 1978(Crama et al, , 1979Crama, 1981), driven by interactions between localized orbital electronic states and the crystal lattice (Gehring & Gehring, 1975). One of the most representative structures demonstrating a series of such transitions is RbCuCl 3 , which undergoes two Jahn-Teller structural phase transitions at 262 and 339 K (Bastow & Whitfield, 1980).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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A novel polymorph of RbCuCl (rubidium copper trichloride), denoted ℇ-RbCuCl, has been prepared by chemical vapour transport (CVT) from a mixture of CuO, CuCl, SeO and RbCl. The new polymorph crystallizes in the orthorhombic space group C222. 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 cations reside in octahedral cavities with a typical [4 + 2]-Jahn-Teller-distorted coordination, forming four short and two long Cu-Cl bonds. ℇ-RbCuCl is the most structurally complex and most dense among all currently known RbCuCl polymorphs, which allows us to suggest that it is a high-pressure phase, which is unstable under ambient conditions.

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The cooperative Jahn–Teller distorted structures of rubidium chromium(II) trichloride and caesium chromium(II) trichloride

Cited by 35 publications

References 4 publications

Sulphides with the GdFeO₃ structure

Sulphides with the GdFeO₃ structure

Ternary Erbium Chromium Sulfides: Structural Relationships and Magnetic Properties

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

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The cooperative Jahn–Teller distorted structures of rubidium chromium(II) trichloride and caesium chromium(II) trichloride

Cited by 35 publications

References 4 publications

Sulphides with the GdFeO3 structure

Sulphides with the GdFeO3 structure

Ternary Erbium Chromium Sulfides: Structural Relationships and Magnetic Properties

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

Contact Info

Product

Resources

About

Sulphides with the GdFeO₃ structure

Sulphides with the GdFeO₃ structure

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