Assignments MPBCP La-MPBCP [La-MPBCP]+3
N1-H1 3702 —– 3400
C5-H2 3193 3113 3051
C6=C7 1663 1661 1630
C1=C2 1647 1638 1678
C2-N1 1486 1360 1377
La-N1 —- 1135,323 917, 306