Dodecahedral octacovalent bond orbitals of D2d symmetry are considered. The bond orbitals are divided into two groups which may differ widely in composition, the over-all composition remaining sp3d4. When the average orbital strength is greatest, it equals 2.981 and the orbitals of group one and group two differ in composition and strength. The concept of orbital strength does not allow us to exclude either the dodecahedral or the tetragonal antiprism structure in AB8 when A employs the sp3d4 configuration.
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