2-2 Electron Deficient and Electron Excess Bonding Units
15
Figure 2-4: Linnett non-paired spatial orbital structures, with pseudo
22 one-electron bonds.
Figure 2-5: Sets of overlapping atomic orbitals used for 4-electron 3-centre bonding units for
2
N O , 3
O ,
2
HF
 , 3
I
 , FNO, 2 2
F O , Cr-CO linkage for
6
Cr(CO) and Ni-O-Ni linkage for solid
NiO.