Molecules Built Up from ML5 Fragments

I n this section, the valence M Ls fragment orbitals are used to build up the orbitals of 

Interaction diagrams for two M2L10 systems. Notice how the n levels in Re(CO)s lie lower energy than in ReCIs , a direct result of the jt acceptor and donor nature of the ligands, respectively. Combined with a shorter metal-metal distance in the halide, the final-level diagrams are quite different. 

42 comes from a series of structures given by 17.45. The W-W distance varies from 3.37 to 3.llAfor A = Ge, Si, and C. These molecules also can be considered 

Generation of the level diagram for an XM2L10 species by allowing the valence s and p orbitals of X to interact with the orbitals of the M2L10 unit. 

Walsh diagram at the extended Huckel level for the Og and (Tu orbitals in Cr2Cln as the bridging Cl atom is moved off center. 

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