Poly[tin(II)-mu -phenylphosphonato], [Sn(C6H5O3P)](n), was synthesized solv
othermally at 423 K and crystallized in the monoclinic system, space group
Cc. The inorganic layers consist of alternating pyramidal Sn and tetrahedra
l P centers, joined by doubly bridging O atoms. The corner-sharing SnO3 and
PO3C6H5 polyhedra define a corrugated layer of six-membered rings. The lay
ers are connected along the unique b axis by interdigitated phenyl rings of
the phenylphosphonate groups.