Standard molar enthalpy of combustion and formation of enantiomers: (S)-(+)-3,5-Dinitro-N-(1-phenylethyl)benzamide and (R)-(−)-3,5-Dinitro-N-(1-phenylethyl)benzamide

Add time:07/14/2019    Source:sciencedirect.com

Values of the standard (p° = 0.1 MPa) massic energy of combustion in oxygen, at T = 298.15 K, for (S)-(+)-3,5-Dinitro-N-(1-phenylethyl)benzamide (S+DPB) and (R)-(−)-3,5-Dinitro-N-(1-phenylethyl)benzamide (R−DPB) were measured by using an isoperibolic micro-combustion calorimeter. The calorimeter was calibrated and tested recently in our laboratory. The massic energies of enantiomers were used to derive the standard molar enthalpy of formation in condensate phase, of S+DPB, (−26.86 ± 2.89) kJ ⋅ mol−1 and R−DPB (−25.15 ± 2.90) kJ ⋅ mol−1. Polyethene bags were used as an auxiliary material in the combustion experiments.

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