Table 1: The most important assignments of the ligand and its complexes.


  Compounds ν(OH)
free
ν(OH)
(HB)
ν(C=N)
oxime
ν(C=N)
aliph.
ν(C=N)
cyclic
ν(M−N) ν(M−O) ν(HOH)

  L, C6H9N5O 3,216 3,125 1,678 1,658 1,597
  [NiLCl(H2O)]Cl·1.5H2O 3,421 3,141 1,691 1,626 1,575 422 439 3,326
  [Cd3LCl6(H2O)7] 3,322 3,203 1,687 1,661 1,620 424 466 3,429(HB)
3,281(free)
  [Pt2LCl5(H2O)0.5(C2H5OH)0.5]3Cl 3,313 3,212 1,699 1,621 1,535 434 470 3,517
  [Cu3LCl2(H2O)5]4Cl 3,312 3,193 1,687 1,622 1,549 414 448 3,440(HB)
3,257(free)