Triatomic EP2 Triangles (E=Ge, Sn, Pb) as μ233-Bridging Ligands

Authors

  • Joshua S. Figueroa,

    1. Department of Chemistry, Massachusetts Institute of Technology, Room 2-227, 77 Massachusetts Avenue, Cambridge, MA 02139-4307, USA, Fax: (+1) 617-258-5700
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  • Christopher C. Cummins Prof. Dr.

    1. Department of Chemistry, Massachusetts Institute of Technology, Room 2-227, 77 Massachusetts Avenue, Cambridge, MA 02139-4307, USA, Fax: (+1) 617-258-5700
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  • We gratefully acknowledge the US National Science Foundation (CHE-0316823) for financial support, Dr. Peter Müller for assistance with the X-ray crystallographic studies, and Prof. Daniel G. Nocera for a generous gift of computer time.

Abstract

original image

Salze von zweiwertigen Gruppe-14-Elementen reagieren mit dem [Na(thf)x]+-Derivat des terminalen Niobphosphid-Anions [P[TRIPLE BOND]Nb{N(Np)Ar}3] (Np=Neopentyl, Ar=3,5-Me2C6H3) zu Komplexen der Form [(μ233-cyclo-EP2){Nb[N(Np)Ar]3}2] (E=Ge, Sn, Pb; siehe Struktur). Die verbrückenden {cyclo-EP2}-Einheiten dieser Komplexe können als neutrale dreigliedrige 2π-Elektronenringe gesehen werden, die isolobal zum Cyclopropenium-Ion sind.

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