Syntheses and Crystal Structures of Two New Open‐Framework Tin(II) Phosphates: Sn5O2(PO4)2 and Sn4O(PO4)2

Abstract

AbstractTwo new three‐dimensional neutral open‐framework tin(II) phosphates, Sn5O2(PO4)2 and Sn4O(PO4)2, were synthesized under hydrothermal conditions with different ratio of tin(II) oxalate, phosphoric acid and 4,4′‐diaminodiphenylmethane. Their crystal structures have been solved by single‐crystal X‐ray diffraction methods. Sn5O2(PO4)2 crystallizes in the space group $P{\bar 1}$ and contains six‐membered ring and twelve‐membered ring channels running parallel to the b axis. Sn4O(PO4)2 crystallizes in the space group P21/n and contains intersecting eight‐membered ring channels. These two compounds have rare trigonal‐planar Sn3O.