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Inicio » Actividades I+D > Publicaciones 2009 > Diaquabis[1-hydroxy-2-(imidazol-3-ium-1-...
artículo con referato
E. Freire and D.R. Vega
Acta Cryst. E 65(11) (2009) m1428-m1429
In the title complex, [Zn(C5H9NO7P2)2(H2O)2], the zinc atom is coordinated by two bidentate zoledronate [zoledronate = (2-(1-imidazole)-1-hydroxy-1,1′-ethylidenediphophonate)] ligands and two water molecules. The coordination number is 6. There is one half-molecule in the asymmetric unit with the zinc atom located on a crystallographic inversion centre. The anion exists as a zwitterion with an overall charge of -1; the protonated nitrogen in the ring has a positive charge and the two phosphonates groups each have a single negative charge. There are two intramolecular O–HO hydrogen bonds. The molecules are linked into a chain by intermolecular O–HO hydrogen bonds. Adjacent chains are further linked by O–HO hydrogen bonds involving the aqua ligands. An N–HO interaction is also observed.
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