I. Turel et al., AN ADDUCT OF MAGNESIUM-SULFATE WITH A MEMBER OF THE QUINOLONE FAMILY (CIPROFLOXACIN), Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 2443-2445
In the title compound, hydro-4-oxo-7-quinolinyl)-1-piperazinium-magnes
ium hexahydrate-sulfate-water(1/0.5/1/3), (C17H19FN3O3)[Mg(H2O)(6)]0.5
SO4 . 3H(2)O, the Mg2+ ion lies on a twofold axis and adopts a nearly
regular octahedral geometry. The quinolone is protonated at the termin
al N atom of the piperazine residue. The H atom of the carboxylic acid
group is hydrogen bonded to the carbonyl O atom, thus preventing the
bonding of the metal to this part of the molecule.