Codes n O-H n C=N n M-O n M-N
(1) 3316 1619 - -
(2) 3404 1604 430 539
(3) 3430 1591 415 518
(4) 3455 1596 434 535
(5) 3435 1601 413 536
(6) 3440 1589 469 531
(7) 3439 1621 - -
(8) 3343 1602 417 544
(9) 3440 1601 414 528
(10) 3415 1596 418 534
(11) 3428 1584 416 533
(12) 3413 1585 416 534
Table 2: Infrared spectra of the ligands and metal complexes.