Supramolecular ensemble of a coordination compound of CdI2 with 2-amino-4-methylpyrimidine

Coordination compound [CdI2(Ampym)2] is synthesized by the reaction of 2-amino-4-methylpyrimidine (Ampym, C5H7N3) with CdI2 in an acetonitrile–ethanol (20 : 1) mixture, and its crystal structure is determined. The crystals are triclinic, space group P \(\overline 1 \), a = 6.241(1), b = 11.929(1), c = 12.259(1) A, α = 81.78(1)°, β = 78.82(1)°, γ = 75.82(1)°, V = 863.6(2) A3, ρcalcd = 2.248 g/cm3, Z = 2. The cadmium atom has a tetrahedral coordination by two nitrogen atoms of crystallographically nonequivalent ligands L and two iodine atoms (Cd(1)–Nav 2.305(6), Cd(1)–I(1) 2.7093(8), and Cd(1)–I(2) 2.7235(7) A). The angles at the Cd atom are 100.8(2)°–124.51(3)° (the maximum value corresponds to the ICdI angle). The planar rings N2C4 (±0.01 A) of coordinated ligands L are arranged at an angle of 84.8° relatively to each other. The complexes are joined by hydrogen bonds N–H⋯N into zigzag supramolecular chains.