Materials Data on SnH2C4O3 by Materials Project
SnC4H2O3 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two SnC4H2O3 ribbons oriented in the (0, 1, 0) direction. Sn4+ is bonded in a trigonal bipyramidal geometry to three C and two O2- atoms. There are a spread of Sn–C bond distances ranging from 2.20–2.22 Å. There are one shorter (2.25 Å) and one longer (2.31 Å) Sn–O bond lengths. There are four inequivalent C sites. In the first C site, C is bonded in a distorted bent 120 degrees geometry to two O2- atoms. There is one shorter (1.25 Å) and one longer (1.28 Å) C–O bond length. In the second C site, C is bonded in a single-bond geometry to one Sn4+ atom. In the third C site, C is bonded in a single-bond geometry to one Sn4+ atom. In the fourth C site, C is bonded in a single-bond geometry to one Sn4+ atom. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.67 Å) H–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one C and one H1+ atom. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Sn4+ and two H1+ atoms. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Sn4+ and one C atom.