Compound

Steps

Temperature

ring (˚C)

TG weight loss (%)

Assignments

Tmax/˚C

Calc.

Found

(II)

1

25 - 245

39.00

39.10

2(HNCO), 2H2S and 2(NH) fragments

212

278

524

2

245 - 345

32.50

32.80

2(HCN), (C2H2)

3

More than 345

26.80

27.50

(C17H2) residual

(IIa)

1

25 - 188

4.94

5.20

2 water

242

477

854

959

2

188 - 448

33.50

33.10

6 water molecules, 2N2, 2(HCN), and C2H2 fragments

3

448 - 760

22.90

23.40

S2 and O2 molecules

4

760 - 885

22.50

21.80

CH4 and C12H4 fragments

5

More than 885

16.50

17.30

Co2 molecule is cobalt residue

(IIb)

1,2

25 - 245

15.40

16.40

6 water

181

277

506

680

974

3

245 - 475

20.50

20.60

N2, 2(HCN), N2H2, and O2

4

475 - 765

42.50

42.40

C13H8, S2) fragments

5

More than 765

21.50

20.60

Cu2 metal residual

(IIc)

1

25 - 224

15.300

15.50

6 water molecules

219

309

2

224 - 338

26.90

26.50

2N2, S2, 1/2O2 and 2(HCN) fragment

3

338 - 643

18.20

18.60

1/2O2, CH4 and C2H2 molecules

4

More than 643

39.50

39.40

residue metal of Zn2 and C12H4 fragment

(IId)

1,2

25 - 322

25.20

24.70

8 H2O, HNCO and HCN molecules

229

301

518

3

322 - 506

8.80

9.30

1/2S2 and HNCO

4

506 - 589

9.10

9.56

NH3, N2 and 1/2S2 molecules

5

More than 589

56.80

56.44

C14H6 and Sn2 the residual metal