0
answers
0
watching
89
views
17 Nov 2019
The amino acid tryptophan is shown below. Consider the pi-molecular orbitals on the indole ring, formed from 2p_z orbitals on the numbered atoms around the indole ring. b) Three other molecular orbitals are shown below. For each, draw the molecular orbital, identify it as "bonding" or "antibonding", and predict the relative energies of the three orbitals. For the drawings please Pay very careful attention to the numbers of the atomic orbitals! psi_A = (c_1 phi_1 + c_2 phi_2 + c_3 phi_3) - (c_4 phi_4 + c_5 phi_5 + c_9 phi_9) + (c_6 phi_6 + c_7 phi_7) psi_B = (c_2 phi_2 + c_1 phi_1 + c_9 phi_9 + c_8 phi_8 + c_7 phi_7) - (c_3 phi_3 + c_4 phi_4 + c_5 phi_5 + c_6 phi_6) psi_C = c_2 phi_2 - (c_1 phi_1 + c_9 phi_9 + c_4 phi_4 + c_3 phi_3)+ c_5 phi_5 - (c_6 phi_6 + c_7 phi_7) + c_8 phi_8 c) The HOMO is shown below (only the indole side chain shown). Write the molecular orbital as a linear combination of the phi_2pz orbitals.
The amino acid tryptophan is shown below. Consider the pi-molecular orbitals on the indole ring, formed from 2p_z orbitals on the numbered atoms around the indole ring. b) Three other molecular orbitals are shown below. For each, draw the molecular orbital, identify it as "bonding" or "antibonding", and predict the relative energies of the three orbitals. For the drawings please Pay very careful attention to the numbers of the atomic orbitals! psi_A = (c_1 phi_1 + c_2 phi_2 + c_3 phi_3) - (c_4 phi_4 + c_5 phi_5 + c_9 phi_9) + (c_6 phi_6 + c_7 phi_7) psi_B = (c_2 phi_2 + c_1 phi_1 + c_9 phi_9 + c_8 phi_8 + c_7 phi_7) - (c_3 phi_3 + c_4 phi_4 + c_5 phi_5 + c_6 phi_6) psi_C = c_2 phi_2 - (c_1 phi_1 + c_9 phi_9 + c_4 phi_4 + c_3 phi_3)+ c_5 phi_5 - (c_6 phi_6 + c_7 phi_7) + c_8 phi_8 c) The HOMO is shown below (only the indole side chain shown). Write the molecular orbital as a linear combination of the phi_2pz orbitals.