Materials Data on CdH4NCl3 by Materials Project
NH4CdCl3 crystallizes in the orthorhombic Pnma space group. The structure is one-dimensional and consists of four ammonium molecules and two CdCl3 ribbons oriented in the (1, 0, 0) direction. In each CdCl3 ribbon, Cd2+ is bonded to six Cl1- atoms to form edge-sharing CdCl6 octahedra. There are a spread of Cd–Cl bond distances ranging from 2.58–2.76 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Cd2+ atom. In the second Cl1- site, Cl1- is bonded in a distorted T-shaped geometry to three equivalent Cd2+ atoms. In the third Cl1- site, Cl1- is bonded in a water-like geometry to two equivalent Cd2+ atoms.
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