Valence shell electron-pair repulsion structural effects

Valence shell electron pair repulsion theory, 32-39 effective bond length ratios, 34 repulsion energy coefficient, 33 Valency structure and, 5 Valinomycin... 

In everyday practice, chemists often use a minimal model of molecules that enables them to compare the geometry and vibrational frequencies with experiment to the accuracy of about 0.01 A for bond lengths and about 1 for bond angles. This model assumes that the speed of light is infinite (non-relativistic effects only), the Born-Oppenheimer approximation is valid (i.e., the molecule has a 3-D structure), the nuclei are boimd by chemical bonds and vibrate in a harmonic way, the molecule moves (translation) and rotates as a whole in space. In many cases, we can successfully predict the 3-D structure of a molecule by using a very simple took the Valence Shell Electron Pair Repulsion (VSEPR) algorithm. 

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