EPR investigations of a thermally produced Mo(V) species in (NH4)2SnCl6 and K2SnCl6, crystals doped with MoO42-

Jiang Tsu Yu

doi:10.1016/0022-3697(92)90088-U

EPR investigations of a thermally produced Mo(V) species in (NH₄)₂SnCl₆ and K₂SnCl₆, crystals doped with MoO₄^2-

Jiang Tsu Yu^*

^*Corresponding author for this work

Department of Physics

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

3 Citations (Scopus)

Abstract

We have employed the method of electron paramagnetic resonance (EPR) to investigate a Mo(VI) to Mo(V) reduction in (NH₄)₂SnCl₆:MoO₄^2- crystals thermally treated at temperatures below the decomposition temperature of the host compound. A similar Mo(V) species can be thermally produced in K₂SnCl₆: MoO₄^2- crystals codoped with either the NH₄⁺ or the CH₃NH₃⁺ ion, or by placing the crystals inside a polycrystalline mass of one of the following five compounds; namely, NH₄Cl, NH₄Br, NH₄ClO₄, (NH₄)SO₄, and CN₃NH₂·HCl. The EPR spectrum of this thermally produced Mo(V) species exhibited tetragonal symmetry, a molybdenum hyperfine structure, and a chlorine superhyperfine structure. We tentatively assign the structure of this Mo(V) species to a [MoOCl₅]^2- complex ion.

Original language	English
Pages (from-to)	1131-1137
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	53
Issue number	8
DOIs	https://doi.org/10.1016/0022-3697(92)90088-U
Publication status	Published - 1992 Aug

Keywords

EPR
Mo(VI) to Mo(V) thermal reduction
solid state reaction

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/0022-3697(92)90088-U

Cite this

@article{d83242fbccd8488cbe4259da9b9f8c3f,

title = "EPR investigations of a thermally produced Mo(V) species in (NH4)2SnCl6 and K2SnCl6, crystals doped with MoO42-",

abstract = "We have employed the method of electron paramagnetic resonance (EPR) to investigate a Mo(VI) to Mo(V) reduction in (NH4)2SnCl6:MoO42- crystals thermally treated at temperatures below the decomposition temperature of the host compound. A similar Mo(V) species can be thermally produced in K2SnCl6: MoO42- crystals codoped with either the NH4+ or the CH3NH3+ ion, or by placing the crystals inside a polycrystalline mass of one of the following five compounds; namely, NH4Cl, NH4Br, NH4ClO4, (NH4)SO4, and CN3NH2·HCl. The EPR spectrum of this thermally produced Mo(V) species exhibited tetragonal symmetry, a molybdenum hyperfine structure, and a chlorine superhyperfine structure. We tentatively assign the structure of this Mo(V) species to a [MoOCl5]2- complex ion.",

keywords = "EPR, Mo(VI) to Mo(V) thermal reduction, solid state reaction",

author = "Yu, \{Jiang Tsu\}",

note = "Funding Information: Acknowledgements-The authort hanksP rof. S. Chengf or the TGA measurementsa, nd the support given by the National ScienceC ouncil of the Republico f China during the period of this research.",

year = "1992",

month = aug,

doi = "10.1016/0022-3697(92)90088-U",

language = "English",

volume = "53",

pages = "1131--1137",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

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AU - Yu, Jiang Tsu

N1 - Funding Information: Acknowledgements-The authort hanksP rof. S. Chengf or the TGA measurementsa, nd the support given by the National ScienceC ouncil of the Republico f China during the period of this research.

PY - 1992/8

Y1 - 1992/8

N2 - We have employed the method of electron paramagnetic resonance (EPR) to investigate a Mo(VI) to Mo(V) reduction in (NH4)2SnCl6:MoO42- crystals thermally treated at temperatures below the decomposition temperature of the host compound. A similar Mo(V) species can be thermally produced in K2SnCl6: MoO42- crystals codoped with either the NH4+ or the CH3NH3+ ion, or by placing the crystals inside a polycrystalline mass of one of the following five compounds; namely, NH4Cl, NH4Br, NH4ClO4, (NH4)SO4, and CN3NH2·HCl. The EPR spectrum of this thermally produced Mo(V) species exhibited tetragonal symmetry, a molybdenum hyperfine structure, and a chlorine superhyperfine structure. We tentatively assign the structure of this Mo(V) species to a [MoOCl5]2- complex ion.

AB - We have employed the method of electron paramagnetic resonance (EPR) to investigate a Mo(VI) to Mo(V) reduction in (NH4)2SnCl6:MoO42- crystals thermally treated at temperatures below the decomposition temperature of the host compound. A similar Mo(V) species can be thermally produced in K2SnCl6: MoO42- crystals codoped with either the NH4+ or the CH3NH3+ ion, or by placing the crystals inside a polycrystalline mass of one of the following five compounds; namely, NH4Cl, NH4Br, NH4ClO4, (NH4)SO4, and CN3NH2·HCl. The EPR spectrum of this thermally produced Mo(V) species exhibited tetragonal symmetry, a molybdenum hyperfine structure, and a chlorine superhyperfine structure. We tentatively assign the structure of this Mo(V) species to a [MoOCl5]2- complex ion.

KW - EPR

KW - Mo(VI) to Mo(V) thermal reduction

KW - solid state reaction

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