Cyclobutadiene, C 4 H 4 , is unstable but can be stabilized in complexes such as (C 4 H 4 )Fe(CO) 3 In such complexes, C 4 H 4 is planar and has equal CC bond lengths (a) After the formation of CH and CC bonds in C 4 H 4 , what orbitals are available for bonding (b) Assuming D 4h symmetry for C 4 H...

a After the formation of CH and CC bonds in C4H4 the remaining orbitals available for bonding are the porbitals on each carbon atom In a planar cyclob ...

Cyclobutadiene, C 4 H 4 , is unstable but can be stabilized in complexes such as (C

Question:

Cyclobutadiene, C₄H₄, is unstable but can be stabilized in complexes such as (C₄H₄)Fe(CO)₃. In such complexes, C₄H₄ is planar and has equal C—C bond lengths:

(a) After the formation of C—H and C—C σ-bonds in C₄H₄, what orbitals are available for π-bonding?

(b) Assuming D_4h symmetry for C₄H₄, derive the symmetries of the four π-MOs. Derive equations for the normalized wavefunctions that describe these MOs, and sketch representations of the four orbitals.

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