Zwitterionic Melaminium Trichloromercurate(II), [MelH+HgCl3‐](Mel)

Colourless long and thin needles of the reaction product of melamine with mercuric chloride in water/methanol, MelH⁺HgCl₃^‐](Mel), crystallize with a structure that contains zwitterionic molecules MelH⁺HgCl₃^‐] and “free” melamine (Mel) molecules; monoclinic, P2₁, Z = 2, a = 939.43(18), b = 682.80(9), c = 1218.9(2) pm, β = 99.61(2)°, R(all) = 0.0291, T = 20 °C.