synthesis and crystal structures of the quaternary zintl phases rbna8ga3pn6 (pn = p, as) and na10nbgaas6合成和晶体结构的第四纪zintl阶段rbna8ga3pn6(pn = p)和na10nbgaas6.pdf

Crystals 2012, 2, 213-223; doi:10.3390/cryst2020213 OPEN ACCESS crystals ISSN 2073-4352 /journal/crystals Article Synthesis and Crystal Structures of the Quaternary Zintl Phases RbNa Ga Pn (Pn = P, As) and Na NbGaAs 8 3 6 10 6 Hua He, Chauntae Tyson, and Svilen Bobev * Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA * Author to whom correspondence should be addressed; E-Mail: bobev@; Tel.: +1-302-831-8720; Fax: +1-302-831-6335. Received: 21 December 2011; in revised form: 27 March 2012 / Accepted: 31 March 2012 / Published: 11 April 2012 Abstract: The new Zintl compounds RbNa Ga Pn (Pn = P, As) and Na NbGaAs have 8 3 6 10 6 been synthesized from the corresponding elements at high temperatures. RbNa Ga P and 8 3 6 RbNa Ga As crystallize with a novel structure type that features trigonal planar 8 3 6 [Ga P ]9– and [Ga As ]9– motifs, which are isosteric with the 1,3,5-trioxanetrione (a cyclic 3 6 3 6 trimer of carbon dioxide). Na NbGaAs , an unforeseen side product of the same reactions 10 6 b