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Crystals 2012, 2(2), 213-223; doi:10.3390/cryst2020213
Article

Synthesis and Crystal Structures of the Quaternary Zintl Phases RbNa8Ga3Pn6 (Pn = P, As) and Na10NbGaAs6

,  and *
Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
* Author to whom correspondence should be addressed.
Received: 21 December 2011 / Revised: 27 March 2012 / Accepted: 31 March 2012 / Published: 11 April 2012
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Abstract

The new Zintl compounds RbNa8Ga3Pn6 (Pn = P, As) and Na10NbGaAs6 have been synthesized from the corresponding elements at high temperatures. RbNa8Ga3P6 and RbNa8Ga3As6 crystallize with a novel structure type that features trigonal planar [Ga3P6]9 and [Ga3As6]9 motifs, which are isosteric with the 1,3,5-trioxanetrione (a cyclic trimer of carbon dioxide). Na10NbGaAs6, an unforeseen side product of the same reactions boasts a structure, which is based on NbAs4 and GaAs4 tetrahedra, condensed by sharing common edges into [NbGaAs6]10– dimers. The bonding characteristics of both structures are discussed. All three compounds reported herein represent the first compounds found in the respective quaternary systems.
Keywords: arsenides; crystal structure; phosphides; Zintl phases arsenides; crystal structure; phosphides; Zintl phases
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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He, H.; Tyson, C.; Bobev, S. Synthesis and Crystal Structures of the Quaternary Zintl Phases RbNa8Ga3Pn6 (Pn = P, As) and Na10NbGaAs6. Crystals 2012, 2, 213-223.

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