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    STUDIA CHEMIA - Issue no. 2 / 2008  
         
  Article:   GERMANIUM CLUSTER POLYHEDRA.

Authors:  IOAN SILAGHI-DUMITRESCU, BRUCE KING. 		 
       
         
  Abstract:   Hybrid DFT B3LYP geometry optimizations on Genz (n=5 – 14), z= -6, -4, -2, 0, 2, 4, 6) have been undertaken in order to understand the structure of some post-transition metal cluster anions established experimentally by X-ray crystallography. Distortions from the expected geometries are interpreted in terms of hypo- or hyperelectronic counting of the skeletal electrons. Deviations from the Wade-Mingos rules noticed in several cases can be related to the use of the “external” electron pairs in the skeletal bonding.  
         
     
         
         
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