title: Biguanidinium dichloride.
abstract: The asymmetric unit of the title compound, C(2)H(9)N(5) (2+)·2Cl(-), is composed of one diprotonated biguanidinium cation and two chloride anions. The diprotonated cation consists of two planar halves twisted by 36.42 (6)°. The ions are associated in the crystal structure by extensive hydrogen bonding into a three-dimensional network; the diprotonated biguanidinium cation is hydrogen bonded to the chloride anions.
authors.affiliation: Chemistry Department, 'Sapienza' University of Rome, P. le A. Moro, 5, I-00185 Rome, Italy.
authors.forename: Gustavo
authors.initials: G
authors.lastname: Portalone