Hello to all, I get something to confuse me... I performed DFT to a molecular system with carbazole, so, I set a functional group in C2 position and calculated the molecular energy density (HOMO-LUMO) and then, I set the same functional group but now in C3 carbazole position and again I get the same HOMO-LUMO value using the same process... so I need to understand better this issue to be able to explain it. please give me something to read to understand. I really appreciate all your valuable help.. thanks in advance.
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