Organic Chemistry
For the molecular orbitals (MOs) of 1,3,5-hexatriene, determine which MO, in the ground state, is the HOMO and is the LUMO.
For the molecular orbitals of 1,3,5-hexatriene, determine the number of nodes in the highest-energy MO of the given molecule between the nuclei.
Identify each of the given diene and polyene as cumulated, conjugated, or isolated.
Under basic conditions, compound II will form a conjugate system while compound I will not. Give a possible explanation and provide the mechanism that shows the formation of the conjugated system in compound II.
Predict whether each structure shown below is likely to be colored organic compounds or not. Show the extended conjugation for structures that you predict to be colored by marking the series of continuous sp2 hybridized atoms.