Controlling Lewis basicity in polythioarsenate fluxes

Stabilization of KSnAsS5 and K2SnAs2S6. Extended chains and slabs based on pyramidal β-[AsS4]3- and [AsS3]3- units

Ratnasabapathy G. Iyer, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Two low-dimensional compounds, KSnAsS5 and K2SnAs2S6, were prepared using liquid polythioarsenate salts, and the results differ from those obtained with the well studied thiophosphate flux. KSnAsS5 crystallizes in the orthorhombic space group Pbam with cell parameters of a = 8.136(2) Å, b = 13.784(4) Å, c = 7.428(2) Å. KSnAsS5 features the unusual pyramidal species [AsS2(S2)]3-. K2SnAs2S6 crystallizes in the trigonal space group P3 with cell parameters a = 6.717(5) Å, b = 7.204(8) Å, γ = 120°. The compounds were obtained by controlling the Lewis basicity of the K2S/As2S3/S flux. The optical, thermal, and spectroscopic properties of the compounds are reported.

Original languageEnglish
Pages (from-to)3605-3607
Number of pages3
JournalInorganic Chemistry
Volume41
Issue number14
DOIs
Publication statusPublished - Jul 15 2002

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Alkalinity
slabs
Stabilization
stabilization
Fluxes
cells
thermodynamic properties
Salts
salts
optical properties
Liquids
liquids
thiophosphoric acid
Hot Temperature

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

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title = "Controlling Lewis basicity in polythioarsenate fluxes: Stabilization of KSnAsS5 and K2SnAs2S6. Extended chains and slabs based on pyramidal β-[AsS4]3- and [AsS3]3- units",
abstract = "Two low-dimensional compounds, KSnAsS5 and K2SnAs2S6, were prepared using liquid polythioarsenate salts, and the results differ from those obtained with the well studied thiophosphate flux. KSnAsS5 crystallizes in the orthorhombic space group Pbam with cell parameters of a = 8.136(2) {\AA}, b = 13.784(4) {\AA}, c = 7.428(2) {\AA}. KSnAsS5 features the unusual pyramidal species [AsS2(S2)]3-. K2SnAs2S6 crystallizes in the trigonal space group P3 with cell parameters a = 6.717(5) {\AA}, b = 7.204(8) {\AA}, γ = 120°. The compounds were obtained by controlling the Lewis basicity of the K2S/As2S3/S flux. The optical, thermal, and spectroscopic properties of the compounds are reported.",
author = "Iyer, {Ratnasabapathy G.} and Kanatzidis, {Mercouri G}",
year = "2002",
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publisher = "American Chemical Society",
number = "14",

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T1 - Controlling Lewis basicity in polythioarsenate fluxes

T2 - Stabilization of KSnAsS5 and K2SnAs2S6. Extended chains and slabs based on pyramidal β-[AsS4]3- and [AsS3]3- units

AU - Iyer, Ratnasabapathy G.

AU - Kanatzidis, Mercouri G

PY - 2002/7/15

Y1 - 2002/7/15

N2 - Two low-dimensional compounds, KSnAsS5 and K2SnAs2S6, were prepared using liquid polythioarsenate salts, and the results differ from those obtained with the well studied thiophosphate flux. KSnAsS5 crystallizes in the orthorhombic space group Pbam with cell parameters of a = 8.136(2) Å, b = 13.784(4) Å, c = 7.428(2) Å. KSnAsS5 features the unusual pyramidal species [AsS2(S2)]3-. K2SnAs2S6 crystallizes in the trigonal space group P3 with cell parameters a = 6.717(5) Å, b = 7.204(8) Å, γ = 120°. The compounds were obtained by controlling the Lewis basicity of the K2S/As2S3/S flux. The optical, thermal, and spectroscopic properties of the compounds are reported.

AB - Two low-dimensional compounds, KSnAsS5 and K2SnAs2S6, were prepared using liquid polythioarsenate salts, and the results differ from those obtained with the well studied thiophosphate flux. KSnAsS5 crystallizes in the orthorhombic space group Pbam with cell parameters of a = 8.136(2) Å, b = 13.784(4) Å, c = 7.428(2) Å. KSnAsS5 features the unusual pyramidal species [AsS2(S2)]3-. K2SnAs2S6 crystallizes in the trigonal space group P3 with cell parameters a = 6.717(5) Å, b = 7.204(8) Å, γ = 120°. The compounds were obtained by controlling the Lewis basicity of the K2S/As2S3/S flux. The optical, thermal, and spectroscopic properties of the compounds are reported.

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