Enthalpies of combustion of two bis(N,N-diethylthioureas)

Add time:08/13/2019    Source:sciencedirect.com

The standard (p∘ = 0.1 MPa) molar energies of combustion in oxygen, at T = 298.15 K, of two crystalline bis(N,N-diethylthioureas) R(CONHCSNEt2)2: pyridine-2,6-dicarbonyl-bis(N,N-diethylthiourea), R = pyridyl, abbreviated as (bis-py-DETU), and adipoyl-dicarbonyl-bis(N,N-diethylthiourea), R = (CH2)4, abbreviated as (bis-ad-DETU), were measured by rotating bomb calorimetry so, the standard molar enthalpies of formation of both compounds, in their crystalline phase, were derived. Compound-ΔcUm∘(cr)-ΔfHm∘(cr)kJ·mol-1kJ·mol-1Pyridine-2,6-dicarbonyl-bis(N,N-diethylthiourea) [bis-py-DETU]11027.1 ± 5.2425.2 ± 5.6Adipoyl-dicarbonyl-bis(N,N-diethylthiourea) [bis-ad-DETU]11124.6 ± 5.7644.4 ± 6.1

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