Materials Data on Sr2Mg by Materials Project

Sr2Mg1 crystallizes in the monoclinic Cm space group. The structure is two-dimensional and consists of two Sr2Mg1 sheets oriented in the (1, 0, 0) direction. there are four inequivalent Sr sites. In the first Sr site, Sr is bonded in a 12-coordinate geometry to three Mg atoms. There are two shorter (3.56 Å) and one longer (3.94 Å) Sr–Mg bond lengths. In the second Sr site, Sr is bonded in a 12-coordinate geometry to two equivalent Mg atoms. Both Sr–Mg bond lengths are 3.60 Å. In the third Sr site, Sr is bonded in a 3-coordinate geometry to three Mg atoms. There are one shorter (3.53 Å) and two longer (3.55 Å) Sr–Mg bond lengths. In the fourth Sr site, Sr is bonded in a 12-coordinate geometry to two equivalent Mg atoms. Both Sr–Mg bond lengths are 3.78 Å. There are two inequivalent Mg sites. In the first Mg site, Mg is bonded in a 3-coordinate geometry to three Sr atoms. In the second Mg site, Mg is bonded in a 7-coordinate geometry to seven Sr atoms.