The 2-imino-1, 10-phenanthroline ligands, 1, 10-C12H7N2-2-CRN (2, 6-i-Pr2-4-R1- C6H2)[R= R1= H (L1); R= H, R1= Br (L2); R= H, R1= CN (L3); R= H, R1= i-Pr (L4); R= Me, R1= H (L5); R= Me, R1= i-Pr (L6)], have been prepared in high yield from the condensation reaction of 1, 10-C12H7N2-2-CRO (R= H, Me) with one equivalent of the corresponding 4- substituted 2, 6-diisopropylaniline. The molecular structures of L2, L5 and L6 reveal the ...