[Oxalylbis(aza-nedi-yl)]bis-{[amino-(2-pyrid-yl)methyl-ene]ammonium}.

The title compound, C(14)H(16)N(8)O(2) (2+)·2ClO(4) (-), was prepared by reaction of bis-[amino-(2-pyrid-yl)methyl-ene]oxalohydrazide with perchloric acid. The mol-ecular symmetry is C(i) and thus the asymmetric unit comprises one half-mol-ecule. The dihedral angle between the aromatic ring and the plane of the oxamide group is 70.

Diaqua-dibromidobis[3-dimethyl-amino-1-(4-pyridyl-κN)prop-2-en-1-one]cadmium(II).

In the title compound, [CdBr(2)(C(10)H(12)N(2)O)(2)(H(2)O)(2)], the Cd(II) ion is located on an inversion center and is six-coordinated by two N atoms [Cd-N = 2.377 (3) Å] from two different 3-dimethyl-amino-1-(4-pyrid-yl)prop-2-en-1-one ligands, two O atoms [Cd-O = 2.355 (2) Å] from two coordinated water mol-ecules and two bromide anions [Cd-Br = 2.