(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Consider the formaldehyde molecule (A). The 2Pz orbitals of C and O are together a pi molecular orbital (MO, as drawned in (B). De pi* MO is marked in (C).

Show, with the help of symmetry arguments, that die transition dipole moment in formaldehyde of pi-pi* transition is polarised through the C=O axis. (Hint: expand the dipole operator mu in cartesian coordinates mu of x, mu of y and mu of z (MUx, MUy, MUz) and mirror the transition dipole moment in the xy, xz and yz plane).

2. Relevant equations

3. The attempt at a solution

How to start? (Not the answer, but a clue to the answer).

Thnx!

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# Symmetry arguments formaldehyde

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