In this paper, we used the supra fuzzy topology which generated from a fuzzy bitopological space [1] to introduce and study the concepts of continuity (resp. openness, closeness) of mapping, separation axioms and compactness for a fuzzy bitopological spaces. Our definition preserve much of the correspondence between concepts of fuzzy bitopological spaces and the associated fuzzy topological spa...

In the title compound, C(16)H(14)N(2)O(2), the conformation about the C=C bond is E, and the two amide groups are effectively orthogonal [the C-N-N-C torsion angle is 104.5 (2)°]. In the crystal structure, the amide groups groups associate via N-H⋯O hydrogen bonding, forming supra-molecular tapes with undulating topology along the c-axis direction.

The piperidone ring in the title compound, C(18)H(17)Cl(2)NOS(2), has a distorted half-chair conformation. The S-bound benzene rings are approximately perpendicular to and splayed out of the mean plane through the piperidone ring [dihedral angles = 71.86 (13) and 46.94 (11)°]. In the crystal, C-H⋯O inter-actions link the mol-ecules into [010] supra-molecular chains with a helical topology. C-H⋯...

The asymmetric unit of the title co-crystal, 2C(13)H(10)N(2)O(3)·C(14)H(14)N(4)O(2), comprises one mol-ecule of 2-(4-hydroxy-phenyl-diazen-yl)benzoic acid and half of an N,N'-bis-(4-pyridylmeth-yl)oxamide mol-ecule as the latter is disposed about an inversion centre. The most notable feature of the crystal structure is the formation of supra-molecular chains arising from hydr-oxy-pyridine O-H⋯N...

In the title hydrated salt, C(16)H(38)N(4) (2+)·2ClO(4) (-)·H(2)O, the dication is protonated at the diagonally opposite N atoms proximate to the -C(CH(3))(2)- groups. Within the cavity, there are two ammonium-amine N-H⋯N hydrogen bonds. Supra-molecular layers are formed in the crystal packing whereby the water mol-ecule links two perchlorate anions, and the resultant aggregates are connected t...

The title Schiff base complex, [V(C(13)H(10)N(3)O(2))O(2)], features a square-pyramidal coordination geometry defined by the O,N',O'-donors of the tridentate Schiff base ligand and two oxide O atoms; one oxide O atom occupies the apical position. In the crystal, pyridinium-oxide N-H⋯O hydrogen bonds lead to zigzag supra-molecular chains with a flattened topology along [101]. The investigated cr...

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