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NH4Cl is Silicon tetrafluoride-derived structured and crystallizes in the cubic P-43m space group. The structure is zero-dimensional and consists of one ammonium molecule and one hydrochloric acid molecule.
(NH2)2(NH3)2Cl2 crystallizes in the orthorhombic Fdd2 space group. The structure is one-dimensional and consists of sixteen ammonia molecules; sixteen ammonia molecules; and sixteen Cl2 ribbons oriented in the (1, 0, 0) direction. In each Cl2 ribbon, Cl1- is bonded in a distorted linear geometry to two equivalent Cl1- atoms. Both Cl–Cl bond lengths are 1.82 Å.