Alkali Metal Polyphosphides in Low Dimensions: Synthesis and Structure of [(CH3)4N]2RbP7(NH3) and [(C2H5)4N]Cs2P11

Authors

  • Nikolaus Korber,

    Corresponding author
    1. Institut für Anorganische Chemie der Universität Bonna, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany Telefax: (internat.) +49(0)228/735660 E-mail: UNC420@ibm.rhrz.uni-bonn.de
    • Institut für Anorganische Chemie der Universität Bonna, Gerhard-Domagk-Straße 1, D-53121 Bonn, Germany Telefax: (internat.) +49(0)228/735660 E-mail: UNC420@ibm.rhrz.uni-bonn.de
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  • Hans Georg von Schnering

    1. Max-Planck-Institut für Festkörperforschungb, Heisenbergstraße 1. D-70506 Stuttgart, Germany Telefax: (internat.) +49(0)711/689-1562
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Abstract

Partial exchange of the alkali metal ions for tetraalkylammonium cations of Rb3P7 and Cs3P11 in liquid ammonia results in the formation of [(CH3)4N]2RbP7(NH3) (1) and [(C2H5)4N]Cs2P11 (2). The crystal structures reveal the existence of one-dimensional math image[RbP7]2− chains in the former and two-dimensional math image[Cs2P11] layers in the latter compound. The nortricyclane cage in 1 is distorted by one-sided coordination to the Rb ions in a manner that can be related to the valence tautomerism of the free P73− anion.

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