Diaquabis(2-(1-imidazole)-1-hydroxy-1,10 ethylidenediphophonate-O,O0)-zinc(II)

ELEONORA FREIRE; DANIEL VEGA

ACTA CRYSTALLOGRAPHICA SECTION E

WILEY-BLACKWELL PUBLISHING, INC

Año: 2009 vol. 65 p. 1428 - 1429

1600-5368

In the title complex, [Zn(C5H9NO7P2)2(H2O)2], the zinc atomis coordinated by two bidentate zoledronate [zoledronate =(2-(1-imidazole)-1-hydroxy-1,10-ethylidenediphophonate)]ligands and two water molecules. The coordination number is6. There is one half-molecule in the asymmetric unit with thezinc atom located on a crystallographic inversion centre. Theanion exists as a zwitterion with an overall charge of 1; theprotonated nitrogen in the ring has a positive charge and thetwo phosphonates groups each have a single negative charge.There are two intramolecular O—H  O hydrogen bonds. Themolecules are linked into a chain by intermolecular O—H  O hydrogen bonds. Adjacent chains are further linked byO—H  O hydrogen bonds involving the aqua ligands. AnN—H  O interaction is also observed