Characterization of Complexes Synthesized Using Schiff Base Ligands and Their Screening for Toxicity Two Fungal and One Bacterial Species on Rice Pathogens

Table 1

Elemental composition and physical data of BHFH ligand and its complexes.

S. number	Complex	Mpt; °C	Colour	C	H	N	M	Cl	Mol Wt; gm	Remarks
				Observed (calculated) %
1	BHFH-L1; (C12H8N2O3)	210	White	63.00; (63.18)	4.50; (4.38)	12.56; (12.27)	—	—	228.13	Loss of 2H
2	[Cu(BHFH)]2-pH 5.5–7.0; Cu2C24H16N4O6	308	Grey	50.02; (50.10)	2.90; (2.78)	10.00; (9.73)	20.95; (22.09)	—	575.35	Loss of 8H
3	[Cu(BHFH)H2O]-pH 8.5; CuC12H10N2O4	280	Green	47.20; (47.44)	3.45; (3.29)	9.50; (9.22)	20.00; (20.94)	—	303.55	Loss of 8H
4	[Ni(BHFH)H2O]-pH 5.5–7.0; NiC12H10N2O4	265	Red	50.00; (50.25)	3.50; (3.49)	9.20; (9.76)	20.00; (20.47)	—	286.83	Loss of H2O
5	[Ni(BHFH)2]-pH 8.5; NiC24H16N4O6	280	Green	56.00; (56.17)	4.00; (3.90)	11.00; (10.92)	11.50; (11.45)	—	512.70	Loss of 6H
6	[Co(BHFH)(H2O)Cl]2; Co2C24H20N4O8Cl2	260	Pink	42.55; (42.70)	3.30; (3.26)	8.51; (8.29)	17.50; (17.46)	10.50; (10.52)	675.12	Loss of 8H
7	[Fe(BHFH)Cl2]2; Fe2C24H16N4O8Cl4	320	Red	40.50; (40.58)	2.80; (2.82)	7.92; (7.89)	16.00; (15.74)	20.00; (20.01)	709.70	Loss of 4H
8	[Mn(BHFH)(H2O)Cl]2; Mn2C24H20N4O8Cl2	280	Yellow	44.50; (44.65)	2.98; (3.10)	8.12; (8.68)	17.00; (16.90)	10.00; (11.01)	645.00	Loss of 1.5H2O
9	[VO(BHFH)Cl]2; V2C24H16N4O8Cl2	285	Grey	44.00; (44.14)	3.00; (3.06)	8.50; (8.57)	15.00; (15.60)	10.74; (10.87)	653.14	Loss of 8H