Complex L=C10H19O ѴC=O/ cm-1 ѴasCOO- /cm-1 ѴsCOO-/cm-1 ΔѴCOO-/ cm-1 ѴM-O/cm-1
HL 1711 - - - -
[Cu L2(HL)2].2H2O   1688 1433 245 478
Table 2: IR data for capric acid and it complex at 25°C.