Selected Molecules with Four or More Atoms

2n orbitals that remain are not able to interact. These occupied 

Along the x axis we have an orbital ipg = a(pjj) + (s), in which a and /f are the mixing coefficients in the hybridization. Since we want to construct three equivalent orbitals, each one must have of the C(2s) orbital. 

Formaldehyde has symmetry operations which place it in the point group. The character table for was given in Table 6-1. Since 0(py) transforms as bj and OCp ) as b, the ground 

Because the components (X,Y,Z) of the dipole vector in Cgy transform as (Ai,Bg,Bi) the transition Ai is orbitally 

Both of these transitions transfer a nonbondii oxygen electron into the ir antibonding C=0 orbital. Both transitions should, therefore, be accompanied by an increase in the C—O bond length. This is verified experimentally. In the excited state the C—O distance is 1.31 A, but it is only 1.22 A in the ground state. In addition, in the excited states the oxygen atomic nucleus is no longer in the plane formed by The out-of-plane bending is about 20° 

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Selected Molecules with Four or More Atoms... 

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