New layered tin(II) thiophosphates ASnPS 4 (A = K, Rb, Cs)

Synthesis, structure, glass formation, and the modulated CsSnPS 4

Santanu Banerjee, Christos D. Malliakas, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The layered compounds KSnPS 4 (1), RbSnPS 4 (2), and CsSnPS 4 (3) were synthesized using the chalcophosphate flux technique at high temperature and are rare examples of divalent Sn(II) thiophosphates. Orange polyhedral crystals of compound 1 crystallize in the monoclinic space group P2 1/c with a = 6.6673(13) Å, b = 11.9697(24) Å, c = 8.7604(18), and β=127.347(8)° in a 2-dimensional layered structure. Compound 2 is isostructural to 1. Yellow block shaped crystals of compound 3 crystallize in the monoclinic superspace group P2 1(αβ0)0 with a commensurate q-vector at 1/4a* + 1/4c* with a = 18.0477(14) Å, b = 6.2021(5) Å, and c = 6.8415(5) Å. The structure of all three compounds contains SnS 3 pyramids, which is an extremely rare solid state chalcogenide coordination environment. All three compounds are semiconductors having well-defined band-gaps between 2.0 and 2.2 eV. The compounds are congruently melting and can be obtained as glasses by rapid quenching of the melt, which subsequently crystallize upon heating.

Original languageEnglish
Pages (from-to)11562-11573
Number of pages12
JournalInorganic Chemistry
Volume51
Issue number21
DOIs
Publication statusPublished - Nov 5 2012

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Tin
tin
Rapid quenching
Glass
Crystals
glass
synthesis
pyramids
crystals
Melting
Energy gap
melting
Semiconductor materials
Fluxes
solid state
Heating
heating
Temperature
thiophosphoric acid

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

New layered tin(II) thiophosphates ASnPS 4 (A = K, Rb, Cs) : Synthesis, structure, glass formation, and the modulated CsSnPS 4. / Banerjee, Santanu; Malliakas, Christos D.; Kanatzidis, Mercouri G.

In: Inorganic Chemistry, Vol. 51, No. 21, 05.11.2012, p. 11562-11573.

Research output: Contribution to journalArticle

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AB - The layered compounds KSnPS 4 (1), RbSnPS 4 (2), and CsSnPS 4 (3) were synthesized using the chalcophosphate flux technique at high temperature and are rare examples of divalent Sn(II) thiophosphates. Orange polyhedral crystals of compound 1 crystallize in the monoclinic space group P2 1/c with a = 6.6673(13) Å, b = 11.9697(24) Å, c = 8.7604(18), and β=127.347(8)° in a 2-dimensional layered structure. Compound 2 is isostructural to 1. Yellow block shaped crystals of compound 3 crystallize in the monoclinic superspace group P2 1(αβ0)0 with a commensurate q-vector at 1/4a* + 1/4c* with a = 18.0477(14) Å, b = 6.2021(5) Å, and c = 6.8415(5) Å. The structure of all three compounds contains SnS 3 pyramids, which is an extremely rare solid state chalcogenide coordination environment. All three compounds are semiconductors having well-defined band-gaps between 2.0 and 2.2 eV. The compounds are congruently melting and can be obtained as glasses by rapid quenching of the melt, which subsequently crystallize upon heating.

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