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Table 3 Thermal behavior of the copper(II)- phenolic complexes.

From: The ligational behavior of a phenolic quinolyl hydrazone towards copper(II)- ions

No. Complex (F.W.) Temperature
range (°C)
% Wt. loss
Found/(Calcd.)
Lost molecules;
Assignment
Probable residue
Found/(Calcd.)
1 [Cu(HL)(H2O)2]2(ClO4)2.1/2H2O.¼MeOH
(1027.76)
43-241 94.13 * Decomp. in one step;
ΔΗ = 830.21 J/g
Metallic Cu;
5.87 (6.17)
2 [Cu2(HL)2(H2L)(NO3)2].1¼H2O.2¾MeOH
(1281.78)
46-105 2.23 (2.22) * ¾ MeOH + ¼ H2O  
   106-272 17.07 (16.23) * 2 MeOH + H2O + 2HNO3 (CuO)2;
13.27 (12.41)
   272-430 51.68 * Decomp.  
   430-587 15.75   
   32-292 9.54 (11.3) * 31/8 H2O with decomp.  
3 [Cu (H2Lc) (H2O)2 Cl2]. 11/8 H2O
(498.1)
293-797 42.06   (Cu2O + CuO);
48.4 (44.7)
   44-254 12.69 31.00 * Two overlapped steps;  
4 [Cu(H2L)(H2O)Br2].1/2H2O
(557.72)
254-434 18.28 (33.8) * 11/2 H2O + 2HBr (Cu2O + Cu);
34.0 (37.0)
   434-800 35.00 → Decomp.  
   29-268 13.16 (13.48) * 2 AcOH  
5 [Cu(HL)(OAc)]2. MeOH
(889.91)
269-676 66.94 * MeOH with decomp. (Cu2O + Cu);
19.9 (23.2)
   28-145 18.39 (7.45) * 2¼ H2O  
6 [Cu(H2L)(H2O)2 SO4].2¼H2O
(543.52)
146-409 19.01(18.03) * H2SO4 (Cu2O + CuO);
40.20 (40.90)
   409-797 32.42 * 2 H2O with decomp.