In class we recently discussed how to draw out molecular orbital energy diagrams for compounds such as NH3 (ammonia). Building upon this, we touched on how to construct a molecular energy diagram for ML6 type coordinate complexes, namely [Cr[NH3]6)3+. I am confused as to where to begin our diagram formation. All I know right now is that we consider that NH3 coordinates to Cr through it's a1 HOMO. I don't know how to proceed beyond this.