Molecular orbital theory for octahedral

Bosch, H., Viste, A., Gray, H. B. (1966) Molecular orbital theory for octahedral and tetrahedral complexes. J. Chem. Phys. 44, 10. 

A molecular orbital theory for octahedral / complexes is described. It is pointed out that the neglect of covalent bonding in the analysis of optical data for the actinide complexes is not justified, and that its inclusion leads to orbital reductions which are considerably greater than have usually been assumed. 

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