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Poly[[diaquabis(μ2‐crotonato‐κ3O:O,O′)(crotonato‐κ2O,O′)lanthanum(III)] adenine monosolvate monohydrate]

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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 La...La 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.

Document Type: Research Article


Publication date: 2012-03-15

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