Acta Cryst. (2003). E59, m903-m905  [ doi:10.1107/S1600536803019974 ]

Diaquabis(nitrato-O)bis(4,7-dihydro-1,2,4-triazolo[1,5-a]pyrimidin-7-one-N³)copper(II)

M. Abul-Haj, M. Quirós and J. M. Salas

Abstract: The molecule of the title compound, [Cu(7HtpO)₂(NO₃)₂(H₂O)₂], contains two neutral 4,7-dihydro-1,2,4-triazolo[1,5-a]pyrimidin-7-one (7HtpO) ligands , coordinated through the N atom in position 3, two nitrate ions each coordinated through one of the O atoms, and two water molecules, completing the octahedral environment around the copper atom which lies on an inversion centre, thus defining the all-trans isomer. The intramolecular N-HO hydrogen bond involving the nitrate oxygen atom linked to the metal atom stabilizes the structure. Distances in the coordination sphere are Cu-N(7HtpO)= 2.003  (2), Cu-O(nitrate) = 2.410  (2) and Cu-O(water) = 1.977  (2)  Å.

Online 18 September 2003

Copyright © International Union of Crystallography
IUCr Webmaster