Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 5 1H and 13C NMR signals of OBH and its diamagnetic complexes

From: Spectral, thermal, molecular modeling and biological studies on mono- and binuclear complexes derived from oxalo bis(2,3-butanedionehydrazone)

Compound NH CH3 13C signals
OBH 11.924 (s, 2H) 2.129 (s, 6H) 196.65 (C=O)ketonic
167.58; (C=O)amidic
148.81 (C=N)
23.90 (CH3)
[Zn(OBH–H)2] 11.781 (s, 1H)
11.565 (s, 1H)
2.371 (s, 3H)
2.118 (s, 3H)
196.68 (C=O)ketonic
168.02 (C=O)amidic free
166.21 (C=O)amidic bonded
149.44 (C=N), (C=N)*
23.94 (CH3)
[VO(OBH-H)2]·H2O 11.769 (s, 1H) 2.087 (s, 3H)
2.053 (s, 3H)
197.12 (C=O)ketonic
172.50 (C=O)amidic (free)
168.44–167.47 (C=O)amidic (bonded)
149.60–148.86 (C=N), (C=N)*
124.68 (C–O)
24.68; 24.98 (CH3)
[Pd2(OBH)(H2O)2Cl4]·2H2O 11.766 (s, 1H)
11.566 (s, 1H)
2.290 (s, 6H) 196.75 (C=O)ketonic
167.98; (C=O)amidic
148.88 (C=N)
22.90 (CH3)
  1. *New azomethine group as a result of enolization