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Mixed Tin Valence in the Tin(II/IV)-Nitridophosphate Sn3P8N16.
Ambach, Sebastian J; Koldemir, Aylin; Witthaut, Kristian; Kreiner, Sandra; Bräuniger, Thomas; Pöttgen, Rainer; Schnick, Wolfgang.
Afiliação
  • Ambach SJ; Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, D-81377, Munich, Germany.
  • Koldemir A; Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 30, D-48149, Münster, Germany.
  • Witthaut K; Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, D-81377, Munich, Germany.
  • Kreiner S; Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, D-81377, Munich, Germany.
  • Bräuniger T; Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, D-81377, Munich, Germany.
  • Pöttgen R; Institut für Anorganische und Analytische Chemie, Universität Münster, Corrensstraße 30, D-48149, Münster, Germany.
  • Schnick W; Department of Chemistry, University of Munich (LMU), Butenandtstraße 5-13, D-81377, Munich, Germany.
Chemistry ; 30(41): e202401428, 2024 Jul 19.
Article em En | MEDLINE | ID: mdl-38717583
ABSTRACT
Sn3P8N16 combines the structural versatility of nitridophosphates and Sn within one compound. It was synthesized as dark gray powder in a high-pressure high-temperature reaction at 800 °C and 6 GPa from Sn3N4 and P3N5. The crystal structure was elucidated from single-crystal diffraction data (space group C2/m (no. 12), a=12.9664(4), b=10.7886(4), c=4.8238(2) Å, ß=109.624(1)°) and shows a 3D-network of PN4 tetrahedra, incorporating Sn in oxidation states +II and +IV. The Sn cations are located within eight-membered rings of vertex-sharing PN4 tetrahedra, stacked along the [001] direction. A combination of solid-state nuclear magnetic resonance spectroscopy, 119Sn Mössbauer spectroscopy and density functional theory calculations was used to confirm the mixed oxidation of Sn. Temperature-dependent powder X-ray diffraction measurements reveal a low thermal expansion of 3.6 ppm/K up to 750 °C, beyond which Sn3P8N16 starts to decompose.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article