Molecules with an LLP Coordination Number of Seven or Higher

Calculations based on the 1/r (n = 6) repulsion law for the points-on-a-sphere model in which the points can represent either electron pairs or ligands have shown that the pentago- 

2 AX E Molecules and Sterically Weak and Inactive Lone Pairs 

In contrast to the nonmetals of the main group, elements the transition metals form only a relatively few compounds that are composed of simple isolated molecules, although they form many complex ions that exist as crystalline solids with an appropriate counter anion. 

Although the ligand field theory can be used to rationalize the geometry of some transition metal molecules and complex ions, the study of the shapes of transition metal molecules in terms of the electron density distribution is still the subject of research and it has not reached a sufficient stage of development to enable us to discuss it in this book. 

Cotton, G. Wilkinson, C. A. Murillo, and M. Bochman, Advanced Inorganic Chemistry, 6th ed., 1999, Wiley, New York. 

7 Molecules with an LLP Coordination Number of Seven or Higher 

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Molecules with an LLP Coordination Number of Seven or Higher 9.7. I AX7 Molecules... 

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