Zintl ions were introduced between the 1890's and 1930's but were not structurally characterized until much later.   Since then, these Group 14 homoatomic deltahedral clusters E9n- (E = Si, Ge, Sn, Pb) have been at the forefront of exciting new chemistry.  Yet, the only characterized mixed clusters are [Sn2Bi2]2-, [Pb2Sb2]2-, [InBi3]2-, [GaBi3]2-, [In4Bi5]3, [Tl4Bi5]3-, [TlSn9]3-, [TlSn8]3-, and [Tl2Te2]2-.  Interestingly, no heteroatomic clusters of the same group are known.  Such species, in particular Si9-xGex, Ge9-xSnx (x = 0 - 9) and Ge9-xMx (M = Sb, Bi; x = 1 - 2) could set the stage and result in interesting opto-electronic properties.  Finally, their functionalization would enhance understanding of their organo-Zintl chemistry.   Reported are the: (1) synthesis of Ge9-xSnx clusters and their alkenylation by reactions with alkynes; and (2) �n-doping� of Ge94- via thermal activation with organo-pnictogens (i.e. SbPh3 and BiPh3) and their alkenylation.  All structures were characterized via electrospray mass spectrometry.

Novel heteroatomic deltahedral zintl ions of group 14: Their alkenylation and "n-doping"

241st National Meeting (2011)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.