Syntheses, Spectral Characterization, and Antimicrobial Studies on the Coordination Compounds of Metal Ions with Schiff Base Containing Both Aliphatic and Aromatic Hydrazide Moieties

Table 3

NMR spectral data of the coordination compounds.

S. no.	Compound	Stoichiometry	^1H NMR (400 MHz; DMSO-d6) δ (ppm)
(1)	4 (M′ = Zn)	ZnC12H16N4O4	1.27 (t, 3H, –CH3), 2.06 (s, 3H, –CH3) (MeOH),; 2.56 (s, 1H, –CH), 3.53 (br, 1H, –OH) (MeOH), 5.14 (d, 2H, –NH2), 6.94–7.80 (m, 4H, Ar–H), 8.50 (br, 1H, –NH), 9.87 (br, 1H, –OH) (phenolic)
(2)	4 (M′ = Cd)	CdC12H16N4O4	1.25 (t, 3H, –CH3), 2.15 (s, 3H, –CH3) (MeOH),; 2.58 (s, 1H, –CH), 3.16 (br, 1H, –OH) (MeOH),; 5.14 (d, 2H, –NH2), 6.74–7.88 (m, 4H, Ar–H), 8.56 (br, 1H, –NH), 9.87 (br, 1H, –OH) (phenolic)
(3)	5	ZrC13H22N4O7	1.30 (t, 3H, –CH3), 2.15 (s, 3H, –CH3) (MeOH), 2.50 (s, 3H, –CH3) (MeOH), 2.58 (s, 1H, –CH), 3.16 (br, 2H, –OH), 3.26 (br, 2H, –OH) (MeOH), 5.14 (d, 2H, –NH2), 6.74–7.88 (m, 4H, Ar–H), 8.72 (br, 1H, –NH), 9.87 (br, 1H, –OH) (phenolic)
(4)	6	MoC12H16N4O6	1.25 (t, 3H, –CH3), 2.25 (s, 3H, –CH3) (MeOH),; 2.56 (s, 1H, –CH), 3.45 (br, 1H, –OH) (MeOH),; 5.11 (d, 2H, –NH2), 6.53–7.50 (m, 4H, Ar–H), 8.87 (br, 1H, –CONH), 9.90 (br, 1H, –OH) (phenolic)
(5)	7	UC12H16N4O6	1.25 (t, 3H, –CH3), 2.35 (s, 3H, –CH3) (MeOH),; 2.56 (s, 1H, –CH), 3.52 (br, 1H, –OH) (MeOH),; 5.14 (d, 2H, –NH2), 6.66–7.52 (m, 4H, Ar–H), 8.87 (br, 1H, –CONH), 9.90 (br, 1H, –OH) (phenolic)