Reactions with Sulfur, Boron, Carbon, Phosphorus, Arsenic, Antimony, and Bismuth

5 Reactions with Sulfur, Boron, Carbon, Phosphorus, Arsenic, Antimony, and Bismuth 

Nitrogen trifluoride passed into molten sulfur at 350 to 400°C reacts to give thiothionyl fluoride, SSF2, and thiazyl fluoride, NSF, as main products and smaller amounts of SF4, SFe, and SO2F2. The composition of the product mixture depends on the depth of the molten sulfur layer and the contact time of the NF3. Below 350°C, small amounts of N3S3F3 are formed [1]. The combustion of sulfur with nitrogen fluoride in a nickel bomb proceeds according to the 

The standard heat of reaction was measured calorimetrically as AHIss.is 228.26 0.2 kcal/g-atom of sulfur [2]. 

The combustion of crystalline boron in nitrogen trifluoride gives boron trifluoride accord-ing to the reaction B(c) + NF3(g) BF3(g) + /2N2(g) 

The standard heat of reaction measured in a bomb calorimeter is AH298.i5=-239.7 1.2 kcal/g-atom of boron [3]. 

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