Syntheses, crystal structures, and optical and magnetic properties of some CsLnCoQ3 compounds (Ln = Tm and Yb, Q = S; Ln = Ho and Yb, Q = Se)

George H. Chan; Leif J. Sherry; Richard P. Van Duyne; James A. Ibers

doi:10.1002/zaac.200700179

Syntheses, crystal structures, and optical and magnetic properties of some CsLnCoQ₃ compounds (Ln = Tm and Yb, Q = S; Ln = Ho and Yb, Q = Se)

George H. Chan^*, Leif J. Sherry, Richard P. Van Duyne, James A. Ibers

^*Corresponding author for this work

Chemistry

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

20 Scopus citations

Abstract

The four new compounds CsTmCoS₃, CsYbCoS₃, CsHoCoSe₃, and CsYbCoSe₃ have been synthesized at 1123 K. These black-colored isostructural compounds crystallize in the KZrCuS ₃ structure type with four formula units in space group Cmcm of the orthorhombic system. The structure of these compounds is composed of _∞²[LnCoQ₃^-] layers separated by Cs atoms. Because there are no Q-Q bonds, the formal oxidation states of Cs/Ln/Co/Q are 1+/3+/2+/2-, respectively. CsHoCoSe₃ shows paramagnetic behavior with μ_eff = 11.9(1) μ_B, whereas CsYbCoS₃ displays an antiferromagnetic-like transition at ∼2.7 K with μ_eff = 5.85(1) μ_B. Both CsYbCoS ₃ and CsYbCoSe₃ exhibit optical band gaps in the near infrared region and broad absorption bands at lower energies.

Original language	English (US)
Pages (from-to)	1343-1348
Number of pages	6
Journal	Zeitschrift fur Anorganische und Allgemeine Chemie
Volume	633
Issue number	9
DOIs	https://doi.org/10.1002/zaac.200700179
State	Published - 2007

Keywords

Chalcogenides
Cobalt
Crystal structures
Magnetic properties
Optical properties
Rare earth
Solid-state chemistry

ASJC Scopus subject areas

Inorganic Chemistry

Access to Document

10.1002/zaac.200700179

Cite this

@article{044c028b0cb34522ace1b8d6fb84c933,

title = "Syntheses, crystal structures, and optical and magnetic properties of some CsLnCoQ3 compounds (Ln = Tm and Yb, Q = S; Ln = Ho and Yb, Q = Se)",

abstract = "The four new compounds CsTmCoS3, CsYbCoS3, CsHoCoSe3, and CsYbCoSe3 have been synthesized at 1123 K. These black-colored isostructural compounds crystallize in the KZrCuS 3 structure type with four formula units in space group Cmcm of the orthorhombic system. The structure of these compounds is composed of ∞2[LnCoQ3-] layers separated by Cs atoms. Because there are no Q-Q bonds, the formal oxidation states of Cs/Ln/Co/Q are 1+/3+/2+/2-, respectively. CsHoCoSe3 shows paramagnetic behavior with μeff = 11.9(1) μB, whereas CsYbCoS3 displays an antiferromagnetic-like transition at ∼2.7 K with μeff = 5.85(1) μB. Both CsYbCoS 3 and CsYbCoSe3 exhibit optical band gaps in the near infrared region and broad absorption bands at lower energies.",

keywords = "Chalcogenides, Cobalt, Crystal structures, Magnetic properties, Optical properties, Rare earth, Solid-state chemistry",

author = "Chan, {George H.} and Sherry, {Leif J.} and {Van Duyne}, {Richard P.} and Ibers, {James A.}",

year = "2007",

doi = "10.1002/zaac.200700179",

language = "English (US)",

volume = "633",

pages = "1343--1348",

journal = "Zeitschrift fur Anorganische und Allgemeine Chemie",

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T1 - Syntheses, crystal structures, and optical and magnetic properties of some CsLnCoQ3 compounds (Ln = Tm and Yb, Q = S; Ln = Ho and Yb, Q = Se)

AU - Chan, George H.

AU - Sherry, Leif J.

AU - Van Duyne, Richard P.

AU - Ibers, James A.

PY - 2007

Y1 - 2007

N2 - The four new compounds CsTmCoS3, CsYbCoS3, CsHoCoSe3, and CsYbCoSe3 have been synthesized at 1123 K. These black-colored isostructural compounds crystallize in the KZrCuS 3 structure type with four formula units in space group Cmcm of the orthorhombic system. The structure of these compounds is composed of ∞2[LnCoQ3-] layers separated by Cs atoms. Because there are no Q-Q bonds, the formal oxidation states of Cs/Ln/Co/Q are 1+/3+/2+/2-, respectively. CsHoCoSe3 shows paramagnetic behavior with μeff = 11.9(1) μB, whereas CsYbCoS3 displays an antiferromagnetic-like transition at ∼2.7 K with μeff = 5.85(1) μB. Both CsYbCoS 3 and CsYbCoSe3 exhibit optical band gaps in the near infrared region and broad absorption bands at lower energies.

AB - The four new compounds CsTmCoS3, CsYbCoS3, CsHoCoSe3, and CsYbCoSe3 have been synthesized at 1123 K. These black-colored isostructural compounds crystallize in the KZrCuS 3 structure type with four formula units in space group Cmcm of the orthorhombic system. The structure of these compounds is composed of ∞2[LnCoQ3-] layers separated by Cs atoms. Because there are no Q-Q bonds, the formal oxidation states of Cs/Ln/Co/Q are 1+/3+/2+/2-, respectively. CsHoCoSe3 shows paramagnetic behavior with μeff = 11.9(1) μB, whereas CsYbCoS3 displays an antiferromagnetic-like transition at ∼2.7 K with μeff = 5.85(1) μB. Both CsYbCoS 3 and CsYbCoSe3 exhibit optical band gaps in the near infrared region and broad absorption bands at lower energies.

KW - Chalcogenides

KW - Cobalt

KW - Crystal structures

KW - Magnetic properties

KW - Optical properties

KW - Rare earth

KW - Solid-state chemistry

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