CH3NH3SiI3 is Indium-derived structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of four methylammonium molecules, two triiodosilyl molecules, and one SiI3 cluster. In the SiI3 cluster, there are two inequivalent Si sites. In the first Si site, Si(2) is bonded in a 4-coordinate geometry to one I(10), one I(12), one I(2), and one I(6) atom. In the second Si site, Si(3) is bonded in a 3-coordinate geometry to one I(10), one I(3), and one I(8) atom. There are six inequivalent I sites. In the first I site, I(3) is bonded in a single-bond geometry to one Si(3) atom. In the second I site, I(2) is bonded in a single-bond geometry to one Si(2) atom. In the third I site, I(6) is bonded in a distorted single-bond geometry to one Si(2) atom. In the fourth I site, I(8) is bonded in a single-bond geometry to one Si(3) atom. In the fifth I site, I(10) is bonded in a distorted linear geometry to one Si(2) and one Si(3) atom. In the sixth I site, I(12) is bonded in a single-bond geometry to one Si(2) atom.
CH3NH3SiI3 is Indium-derived structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of four methylammonium molecules, two triiodosilyl molecules, and one SiI3 cluster. In the SiI3 cluster, there are two inequivalent Si sites. In the first Si site, Si(2) is bonded in a 4-coordinate geometry to one I(10), one I(12), one I(2), and one I(6) atom. The Si(2)-I(10) bond length is 3.18 Å. The Si(2)-I(12) bond length is 2.72 Å. The Si(2)-I(2) bond length is 2.62 Å. The Si(2)-I(6) bond length is 2.89 Å. In the second Si site, Si(3) is bonded in a 3-coordinate geometry to one I(10), one I(3), and one I(8) atom. The Si(3)-I(10) bond length is 2.83 Å. The Si(3)-I(3) bond length is 2.62 Å. The Si(3)-I(8) bond length is 2.76 Å. There are six inequivalent I sites. In the first I site, I(3) is bonded in a single-bond geometry to one Si(3) atom. In the second I site, I(2) is bonded in a single-bond geometry to one Si(2) atom. In the third I site, I(6) is bonded in a distorted single-bond geometry to one Si(2) atom. In the fourth I site, I(8) is bonded in a single-bond geometry to one Si(3) atom. In the fifth I site, I(10) is bonded in a distorted linear geometry to one Si(2) and one Si(3) atom. In the sixth I site, I(12) is bonded in a single-bond geometry to one Si(2) atom.