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Phosphaarsenes - Combining Phospha- and Arsa-Wittig-Reagents.
Beer, Henrik; Siewert, Jan-Erik; Schröder, Mirjam; Fischer, Malte; Corzilius, Björn; Hering-Junghans, Christian.
Afiliación
  • Beer H; Leibniz-Institut für Katalyse (LIKAT), Albert-Einstein-Straße 29a, 18059, Rostock, Germany.
  • Siewert JE; Leibniz-Institut für Katalyse (LIKAT), Albert-Einstein-Straße 29a, 18059, Rostock, Germany.
  • Schröder M; Leibniz-Institut für Katalyse (LIKAT), Albert-Einstein-Straße 29a, 18059, Rostock, Germany.
  • Fischer M; Institut für Chemie und Department Life, Light & Matter, Universität Rostock, Albert-Einstein-Str. 27, 18059, Rostock, Germany.
  • Corzilius B; Leibniz-Institut für Katalyse (LIKAT), Albert-Einstein-Straße 29a, 18059, Rostock, Germany.
  • Hering-Junghans C; Georg-August-Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077, Göttingen, Germany.
Chempluschem ; 89(7): e202400120, 2024 Jul.
Article en En | MEDLINE | ID: mdl-38488262
ABSTRACT
Dipnictenes of the type RPn=PnR (Pn=P, As, Sb, Bi) can be viewed as dimers of the corresponding pnictinidenes R-Pn. Phosphanylidene- and arsanylidenephosphoranes (R-Pn(PMe3); Pn=P, As) have been shown to be versatile synthetic surrogates for the delivery of pnictinidene fragments. We now report that thermal treatment of 1 1 mixtures of R-P(PMe3) and R'-As(PMe3) gives access to arsaphosphenes of the type RP=AsR'. Three examples are presented and the properties and reactivity of Mes*P=AsDipTer (1) (Mes*=2,4,6-tBu3-C6H2; DipTer=2,6-(2,6-iPr2C6H3)2-C6H3) were studied in detail. Solid state 31P NMR spectroscopy revealed a large 31P NMR chemical shift anisotropy with a span of ca. 920 ppm for 1 while computational methods were employed to investigate this pronounced magnetic deshielding of the P atom in 1. In the presence of the carbene IMe4 (IMe4=C(MeNCMe)2) 1 is shown to be split into the corresponding NHC adducts Mes*P(IMe4) and DipTerAs(IMe4), which is additionally shown for diarsenes.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chempluschem Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chempluschem Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania