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artículo con referato
"The supramolecular structure of a cadmium complex with the new functionalized terpyridine ligand 4′-[4-(pyrimidin-5-yl)phenyl]-2,2′:6′,2″-terpyridine (L1): aqua(L1-κ3N,N′,N″)(nitrato-κ2O,O′)(nitrato-κO)cadmium(II) dihydrate"
Juan Granifo, Rubén Gaviño, Eleonora Freire and Ricardo Baggio
Acta Cryst. C 69(8) (2013) 822-825
The monomeric title compound, aqua(nitrato-κ2O,O′)(nitrato-κO){4′-[4-(pyrimidin-5-yl)phenyl]-2,2′:6′,2″-terpyridine-κ3N,N′,N″}cadmium(II) dihydrate, [Cd(NO3)2(C25H17N5)(H2O)]·2H2O, consists of a seven-coordinated CdII centre bound to the novel 4′-[4-(pyrimidin-5-yl)phenyl]-2,2′:6′,2″-terpyridine (L1) ligand (behaving as a tridentate chelate), two nitrate anions (as chelating-bidentate and monodentate ligands) and a water O atom. Both chelating groups define the base of a slightly deformed pentagonal bipyramid, while the monocoordinated ligands occupy the apices. The four heterocycles in L1 form a planar skeleton, while the central benzene ring is rotated from this planar geometry by more than 30°, probably because of packing effects. Noncovalent interactions lead to the formation of columnar arrays parallel to [100].
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