Materials Data on K2Si2Pb2O by Materials Project
K2Si2O(Pb)2 crystallizes in the hexagonal P6/mmm space group. The structure is two-dimensional and consists of two lead molecules and one K2Si2O sheet oriented in the (0, 0, 1) direction. In the K2Si2O sheet, K1+ is bonded in a distorted trigonal planar geometry to three equivalent O2- atoms. All K–O bond lengths are 3.20 Å. Si4- is bonded in a single-bond geometry to one O2- atom. The Si–O bond length is 1.78 Å. O2- is bonded in a linear geometry to six equivalent K1+ and two equivalent Si4- atoms.
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