Partial MO diagrams

Fig. 2. Partial MO diagram showing an octahedral complex with (a) a-donor only, (b) %-donor, and (c) n-acceptor ligands.

Fig. 4.24 A partial MO diagram that illustrates the formation of delocalized C—O ir-bonds using the ligand group orbital approach. The CO2 molecule is defined as l5ung on the z axis. The characters of the and 7r MOs are shown in the diagrams at the top of the figure.

Fig. 4. 25 A qualitative, partial MO diagram to illustrate the formation of a delocalized 7r-system in [NO3] a ligand group orbital approach is used. The characters of the 02" and aj MOs are shown in the diagrams at the right-hand side of the figure.

The S—F (T-bonds involve the radial 2p orbitals, and therefore the partial MO diagram that we construct for SFg focuses only on these fluorine orbitals. The wavefunctions that describe the LGOs for the Fg fragment in SFg are derived as follows. We first work out how many of the six radial 2p orbitals are unchanged under each Ojj S5Tnmetry operation. The following row of characters gives the result ... 

Fig. 4.28 Qualitative, partial MO diagram for the formation of SFg using the ligand group orbital approach with a basis set for sulfur that is composed of the 3 and ip atomic orbitals.

Fig. 4. 33 A qualitative, partial MO diagram showing the formation of the B—H—B bridging interactions. The B—H and B—H—B bonding character of the Ug MO, and the B—H—B bonding character of the MO are shown in the diagrams on the right-hand...

We now have the necessary information to construct a qualitative, partial MO diagram for B2H6. The diagram in Figure 4.33 focuses on the orbital interactions that lead to the formation of B—H—B bridging interactions. 

Fig. 20.14 Approximate partial MO diagrams for metal-ligand 7r-bonding in an octahedral complex (a) with 7r-donor ligands and (b) with 7r-acceptor ligands. In addition to the MOs shown, cr-bonding in the complex involves the a g and ti MOs (see Figure 20.12). Electrons are omitted from the diagram, because we are dealing with a general ion. Compared with Figure...

Fig. 20-46. Partial MO diagram for an octahedral MX6 complex, showing the four main classes of L—s-M charge-transfer transitions.

Figure 33 Partial MO diagram for a trans dinitrosyl compound focusing on the 7r-interactions. Since the two sets of NO 7T orbitals on each ligand interact with the same metal d orbitals, the metal is only required to contribute two electrons to the bonding. Ooupled with the two ON- M dative covalent interactions (not shown), each nitrosly may be classified as an LX ligand.

The partial MO diagram in Figure 5.28 is constructed by matching the symmetries of the S valence orbitals and the LGOs of the Fg fragment. Orbital interactions occur between the a g orbitals and between the orbitals, but the eg set on the Fg fragment is non-bonding in SFg. 

The S—F (T-bonds involve the radial 2p orbitals, and therefore the partial MO diagram that we constmct for SFg focuses only on these fluorine orbitals. The wavefunctions... 

The second example of a linear triatomic with a 3c-2e bonding interaction is XeF2 (T>ooh)- Th bonding is commonly described in terms of the partial MO diagram shown in Fig. 5.30. The Xe Sp orbital (fr symmetry) interacts with the combination of F 2p orbitals that has symmetry, giving rise to and MOs. The combination of F... 

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