Materials Data on MnH12C2(NCl2)2 by Materials Project

Abstract

(CH3NH3)2MnCl4 crystallizes in the orthorhombic Cmce space group. The structure is two-dimensional and consists of two (CH3NH3)2MnCl4 sheets oriented in the (0, 1, 0) direction. Mn2+ is bonded to six Cl1- atoms to form corner-sharing MnCl6 octahedra. The corner-sharing octahedral tilt angles are 11°. There are two shorter (2.34 Å) and four longer (2.58 Å) Mn–Cl bond lengths. C2- is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.49 Å. There is two shorter (1.09 Å) and one longer (1.10 Å) C–H bond length. N3- is bonded in a tetrahedral geometry to one C2- and three H1+ atoms. There is two shorter (1.03 Å) and one longer (1.05 Å) N–H bond length. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- and one Cl1- atom. The H–Cl bond length is 2.10 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a linear geometry to two equivalent Mn2+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted L-shaped geometry to one Mn2+ and one H1+ atom.