Nano-Azo Ligand and Its Superhydrophobic Complexes: Synthesis, Characterization, DFT, Contact Angle, Molecular Docking, and Antimicrobial Studies

Table 2

Thermoanalytical results (TG and DTG) of the H₂L ligand and its metal complexes.

Complex	TG range (^oC)	DTG max	n^∗	Mass loss estim (calcd)% (total mass loss)	Assignment	Residues
Diazo ligand (H2L)	30–355	216	1	36.53 (38.61)	Loss of 4NH3 and 2CO2	—
	355–1000	476,602	2	61.76 (61.38) 100.0 (99.90)	Loss of C18H14N2
[Cr(H2L)Cl2]Cl.2H2O	45–115	79	1	8.88 (8.53)	Loss of 2H2O and NH3	1/2 Cr2O3
	115–310	210	1	30.00 (29.90)	Loss of 3/2Cl2, 2N2, and CH4
	310–990	377,865	2	41.30 (43.10) 80.18 (81.53)	Loss of C17H12NO2.5
[Mn(H2L)Cl2]	30–435	234	1	58.98 (58.86)	Loss of 2N2,Cl2, and C9H5N2	7C + MnO
	435–1000	592	1	20.88 (20.18) 79.66 (79.04)	Loss of C4H11O3
[Fe(H2L)Cl2]Cl.H2O	45–100	75	1	3.29 (3.07)	Loss of H2O	5C + 1/2Fe2O3
	100–355	244	1	47.89 (48.33)	Loss of 3/2Cl2, 3N2, 3CH4, and CO2
	355–1000	485,565,803	3	25.37 (24.63) 76.62 (76.03)	Loss of C11H4O0.5
[Co(H2L)Cl2]	30–260	177	1	12.23 (12.45)	Loss of 2NH3 and1/2Cl2	2C + CoO
	260–475	364	1	6.33 (6.64)	Loss of 1/2 Cl2
	475–890	640	1	60.3 (60.03) 78.91 (79.09)	Loss of C18H13N5O
[Ni(H2L)Cl2]	40–290	199	1	31.24 (31.27)	Loss of 4NH3,N2, and Cl2	8C + NiO
	290–970	395,883	2	35.57 (36.70) 67.85 (67.95)	Loss of C12H4O3
[Cu(H2L)Cl2].3/2H2O	45–145	88	1	4.71 (4.77)	Loss of 3/2H2O	2C + CuO
	145–990	287	1	77.67 (76.92) 82.38 (81.70)	Loss of C18H16Cl2N6O3
[Zn(H2L)Cl2].H2O	45–130	86	1	5.42 (5.72)	Loss of H2O and 1/2N2	3C + ZnO
	130–270	205	1	10.36 (10.26)	Loss of 2N2
	270–1000	348,467	2	63.4 (63.20) 79.17 (79.18)	Loss of C17H16Cl2NO3
[Cd(H2L)Cl2].H2O	40–130	98	1	2.95 (2.90)	Loss of H2O	CdO
	130–355	222	1	25.63 (25.62)	Loss of 3N2 and Cl2
	355–1000	414,591,833	3	50.15 (50.25) 78.73 (78.77)	Loss of C20H16O3

n^∗ = number of decomposition steps.