In the manganese system where MnSO4路H2O (308 K) crystallizes, the only complex compound is the anhydrous Gly路MnSO4 with a polymeric type structure .
A new compound Gly路CoSO4路3H2O was found in the cobalt system under unstable equilibrium conditions. Gly路CoSO4路3H2O was proven to consist of two types of octahedra,