Thiazyl tri- and monofluorides: enthalpies of formation and dissociation enthalpies of the NS bonds
1970
Abstract The energy of combustion of thiazyl trifluoride (NSF 3 ) in fluorine was measured calorimetrically, and a value of −(85.2 ± 0.5) kcal mol −1 was derived for ΔH f o (NSF 3 ,g,298.15 K). Combination of this result with reported mass spectrometric appearance potentials yielded ΔH f o (NSF,g,298.15 K) =+(41 ± 2) kcal mol −1 , ΔH f o (SF 4 ,g,298.15 K) =−162 kcal mol −1 , and NS bond dissociation enthalpies of approximately 93 and 71 kcal mol −1 for NSF 3 and NSF, respectively.
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