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The hydro­thermal reaction of Ni(NO3)2·2H2O, KOH and taurine produced the title compound, K[Ni(C2H6NSO3)3]. The NiII atom is chelated by the three taurinate ligands in a deformed octa­hedral geometry and in a facial manner. Each taurinate ligand bridges two K+ ions via its sulfonate group, forming a three-dimensional framework.

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In the crystal structure of the title compound [systematic name: N-(2,6-difluoro­phen­yl)-5-meth­yl-1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide acetonitrile solvate], C12H9F2N5O2S·C2H3N, the planar bicyclic triazolopyrimidine system is bound to the 2,6-difluoro­benzene group via an SO2–NH bridge, the C—S—N—C torsion angle being −77.85 (18)°; the dihedral angle formed by the bicyclic triazolopyrimidine system and the benzene ring is 128.0 (2)°. N—H...N bonds link the mol­ecules into infinite chains running along the a axis of the crystal structure.
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