Electronic supplementary information (ESI) available: thermal ellipsoid plots of the manganese complex cation, phosphate anion and ethylenediammonium cation; IR spectra of [Mn2(HPO4)3]·(NH3(CH2)2NH3)3/2·H2PO4 and [Mn2(HPO4)3]·(NH3(CH2)2NH3)·(H2O)
x
. See http://www.rsc.org/suppdata/jm/b1/b104491p/