cif-access (organic compounds)
Bis(diethylenetriammonium) trioxalate tetrahydrate, (C4H16N33+)2.(C2O42-)3.4H2O, is polymorphic. The all-trans conformation of the cation in the monoclinic form of the title compound leads to a less compact hydrogen bond network and an increase in unit cell volume of 5% compared with the triclinic form in which the cation adopts a trans-gauche conformation.