Question

2. (40 points) The MO diagrams for homonuclear diatomic molecules are given below. LUMO Lowes Unceaupiad 2P HOMD (tHighast ocaupied No No mixing Mixing of og orbitals (a) (b) Bo BongNon 8-2 Va) (15 pts) Choose the appropriate diagram for the N2 molecule and place the right number of electrons. Indicate the frontier orbitals (HOMO and LUMO) and the bond order. b) (20 pts) Sketch a qualitative MO diagram for the heteronuclear diatomic anion CN; place the right number of electrons in the MO's and indicate the HOMO and the LUMO and the bond order. You will need to use the Table of Orbital Potential Energies (attached) to decide how the MO diagram must be modified from the homonuclear to the heteronuclear situation. (5 pts) Based on your MO diagram, does CN tend to bind to metals through the carbon atom or the nitrogen atom? Explain why. Soft

Answer 1

1. < 02t2 < 4 Tax it () N3 3+7 - 11 5 s'< < 0 3 2 " น แ ฯ ** , HOMO y 7 Bond order = 10-6 2 - LUM 0 1 มีน - [ 2 จน 3 (1) C - 6+1+1= 1 เS <ss 2 3 4 i < 1 - ในุฯ 4 5 % - ° C ( ( () <ss ( IN TT, Thun Tay 72. * * * S 1 : : 17 “1k : IS Cs Scanned with CamScanner

© Always due to carbon' attached with metals, Carben is least electronge tive to Nit then compare Scanned with CamScanner