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Inicio » Actividades I+D > Publicaciones 2012 > Poly[[diaquabis(μ2-crotonato-κ3O:O,O′)(c...
artículo con referato
"Poly[[diaquabis(μ2-crotonato-κ3O:O,O′)(crotonato-κ2O,O′)lanthanum(III)] adenine monosolvate monohydrate]"
A.M. Atria, M.T. Garland and R. Baggio
Acta Cryst. C 68(3) (2012) m53-m56
The asymmetric unit of the title compound, {[La(C4H5O2)3(H2O)2]·C5H5N5·H2O}n, consists of an LaIII cation, three crotonate (but-2-enoate) anions and two coordinated water molecules forming the neutral complex, completed by an external adenine molecule and one hydration water molecule. The LaO10 coordination polyhedra, connected through the sharing of a single edge, form isolated chains running along the [100] direction. These one-dimensional structures are characterized by two different centrosymmetric La2O2 loops, with LaLa distances of 4.5394 (6) and 4.5036 (6) Å. The unbound adenine and water solvent molecules form a highly planar hydrogen-bonded array parallel to (110) (r.m.s. deviation from the mean plane < 0.10 Å) which intersects the isolated La-crotonate chains in a slanted fashion to form an extremely connected hydrogen-bonded three-dimensional structure.
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