Strontium manganese diselenite, SrMn(SeO(3))(2), containing unusual MnO(5+1) polyhedra.
Hydrothermally prepared SrMn(SeO(3))(2) contains infinite chains of vertex-sharing irregular MnO(5+1) polyhedra [mean Mn-O 2.226(3)A], which are fused into layers via pyramidal SeO(3) groups [mean Se-O 1.698(3)A]. Nine-coordinate Sr(2+) cations [mean Sr-O 2.715(4)A] complete the layered structure.
Johnston
Magnus G
MG
Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, Scotland.
Harrison
William T A
WT