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Table 4 Results of the experimental determination of combustion energies of the investigated compounds at 298.15 K

From: Thermodynamic properties of 5(nitrophenyl) furan-2-carbaldehyde isomers

Sample m(cpd),g ΔT, V ΔU Σ , J ΔU fuse , J ΔU ter , J ΔU HNO3 , J ΔU carbon , J c U(cpd), J g−1 m exp /m calc
5(2-nitrophenyl)furan-2-carbaldehyde; − c U(cpd) average  = 23,674 ± 31 J g−1
 A 0.32424 0.5592 8542.9 100.4 795.4 8.3 17.6 23,701 0.9964
 A 0.30861 0.5368 8200.7 87.8 834.7 9.4 23.3 23,639 0.9996
 A 0.35576 0.6065 9265.5 94.1 800.2 10.6 40.8 23,683 0.9972
 B 0.27531 0.4826 7372.7 110.4 802.6 11.8 49.6 23,677 0.9968
 C 0.30758 0.5366 8197.6 108.1 834.0 11.8 21.5 23,635 0.9994
 C 0.35026 0.5968 9117.3 112.3 698.5 11.8 5.0 23,710 0.9994
5-(3-nitro phenyl)-furan-2-carbaldehyde; − c U(cpd) average  = 23,633 ± 37 J g−1
 A 0.40261 0.6779 10,356.3 85.2 932.0 27.7 18.4 23,595 0.9901
 A 0.37500 0.6246 9542.0 94.5 899.8 17.7 29.5 23,645 0.9953
 B 0.29162 0.4984 7614.1 84.2 791.6 23.6 17.2 23,671 0.9952
 B 0.32049 0.5496 8396.2 89.6 842.5 17.7 12.8 23,581 0.9987
 C 0.35108 0.6020 9196.8 91.4 831.5 25.4 10.2 23,665 0.9940
 C 0.45773 0.7687 11,743.4 87.3 969.5 17.9 22.4 23,640 0.9922
5-(4-nitro phenyl)-furan-2-carbaldehyde; − c U(cpd) average  = 23,533 ± 31 J g−1
 A 0.34298 0.5852 8940.1 74.3 818.3 12.9 16.9 23,507 0.9986
 B 0.35493 0.6003 9170.8 87.0 734.4 20.1 22.3 23,553 0.9990
 B 0.39564 0.6757 10,322.7 101.3 946.3 14.8 30.5 23,520 0.9984
 B 0.39158 0.6564 10,027.8 97.9 771.6 14.8 26.4 23,586 0.9929
 C 0.37234 0.6233 9522.2 91.6 721.7 14.8 44.8 23,510 0.9983
 C 0.41218 0.6907 10,551.8 100.5 782.4 14.8 31.3 23,522 0.9990