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Key indicatorsSingle-crystal X-ray study T = 293 K Mean (C-C) = 0.005 Å R factor = 0.051 wR factor = 0.115 Data-to-parameter ratio = 10.5For details of how these key indicators were automatically derived from the article, see

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Novel 3 substituted 1,5-dihydro-2,4,3-benzodioxaphosphepine 3-oxides (5a-h)

Synthesis of 6-subsituted-2,10-dibromodibenzo [d,g] [1,3,6,2]dioxathiaphosphocin 6-sulfides (3a-l) has been accomplished in a two-step process. Reaction of 5,5'-dibromo-2,2'-dihydroxydiphenyl sulfide 1 and thiophosphoryl chloride in equimolar quantities in the presence of triethylamine as a base and DMAP as a catalyst in anhydrous toluene afforded the intermediate 6-chloro-2,10-dibromodibenzo [d,g][1,3,6,2]dioxathiaphosphocin 6-sulfide 2. Subsequent reaction of the monochloride 2 with sodium phenoxides/ thiophenoxides afforded the title compounds. All the compounds showed moderate activity against bacteria and fungi.