Main-group clusters

I 7 Theory and Concepts in Main-Group Cluster Chemistry... 

According to McGrady (2004), however, a continuum view of the different types of clusters may be considered as illustrated in Fig. 4.27, which shows the relations between vertex count and electron count in main group clusters. 

Figure 4.27. Valence electron count and vertex count in main group clusters. Notice, according to McGrady (2004), that the different classes of clusters (electron-rich, electron-precise, etc.) simply occupy different domains in a continuum defined by the two variables (electron and vertex counts).

An Approach to the Bonding in Main Group Cluster Compounds... 

The Number of Skeletal Bonding Electrons (v + x — 2) That Main Group Cluster Units Can Contribute... 

Iso-structural series of transition-metal and main-group clusters. 

Wade64d), Corbett84,85 and others66,86 have pointed out the relationship between the boranes and other main-group clusters and have demonstrated that the electroncounting schemes and structural predictions are identical. Recent work by Wade and Housecraft64 has applied these rules to cyclic and polycyclic hydrocarbons with remarkable success. 

Fig. 5. Molecular structure of [Fe3(Se2)2(CO)io][SbF6]2S02 (9). [Reprinted with kind permission from Drake, G. W. Schimek, G. L. Kolis, J. W. The coordination chemistry of cationic main group clusters Syntheses and structures of [Fe3(Se2)2(CO)io]2+ and Fe4 (Se2)3(CO)i2]2 t. Inorg. Chim. Acta 1995, 240, 63. Copyright 1995 Elsevier Science S. A., P.O. Box 564, 1001 Lausanne, Switzerland.]...

Main-group clusters geometric and electronic structure... 

Cast in terms of eve, the rule for a main group cluster is ... 

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