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Inicio » Actividades I+D > Publicaciones 2014 > Crystal structure of 4,4′-(disulfanediyl...
artículo con referato
"Crystal structure of 4,4′-(disulfanediyl)dibutanoic acid-4,4′-bipyridine (1/1)"
A.M. Atria, M.T. Garland and R. Baggio
Acta Cryst. E 70 (2014) 157-160
4,4′-(Disulfanediyl)dibutanoic acid (dtba) and 4,4′-bipyridine (4,4′-bpy) crystallize in an 1:1 ratio, leading to the title co-crystal with composition C8H14O4S2·C10H8N2. A distinctive feature of the crystal structure is the geometry of the dtba moiety, which appears to be stretched [with a 9.98 (1) Å span between outermost carbons] and acts as an hydrogen-bonding connector, forming linear chains along [-211] with the 4,4′-bpy moiety by way of O–HN hydrogen bonds and C–HO interactions. The influence of the molecular shape on the hydrogen-bonding pattern is analysed by comparing the title compound and two other 4,4′-bpy co-crystals with closely related molecules of similar formulation but different geometry, showing the way in which this correlates with the packing arrangement.
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