Cobalt complexes bispidine ligands

Build the bispidine complex using HyperChem and refine the corresponding co-balt(III) and cobalt(II) complexes with MOMEC (note that the force fields are not optimized for tetrahedral chromophores but our aim here is just to compute relative metal-ligand distances). Note, that all these structural optimizations need to be performed with 1,3-nonbonded interactions alone for the angular geometry around the metal ions (i.e., deactivate the Mult. Harm, functions for both metal atom types, either with the force field editor, in the interaction array or in the parameter array, where you can simply set the force constant to zero). Compare your results with those in Table 17.17.1. 

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