Three azolo[b]1,3,4-thiadiazinium bromides were prepared from the respective
N-amino-
N'-methylazolethiones and phenacyl bromide, and their crystal structures were determined. 6-Phenyl-1-methylimidazo[2,1-b]1,3,4-thiadiazinium bromide (
1) crystallized as methanol solvate (
P2
1/
n), 6-phenyl-1-methyl-1,2,4-triazolo[3,4-b]1,3,4-thiadiazinium bromide (
2) as
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Three azolo[b]1,3,4-thiadiazinium bromides were prepared from the respective
N-amino-
N'-methylazolethiones and phenacyl bromide, and their crystal structures were determined. 6-Phenyl-1-methylimidazo[2,1-b]1,3,4-thiadiazinium bromide (
1) crystallized as methanol solvate (
P2
1/
n), 6-phenyl-1-methyl-1,2,4-triazolo[3,4-b]1,3,4-thiadiazinium bromide (
2) as hemi-ethanol solvate (
P2
1/
n), and 6-phenyl-1-methyl-1,2,4-triazolo[3,2-b]1,3,4-thiadiazinium bromide (
3) solvent-free (
P2
1/
c). Interionic contacts were identified.
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