Ionothermal synthesis and magnetic study of a new manganese(ii) phosphite with an unprecedented Mn/P ratio†
Abstract
A new layered manganese(II) phosphite, |NH4|4[Mn4(PO3H)6] (JIS-10), has been synthesised via the ionothermal method by using 1-pentyl-3-methylimidazolium bromide ([Pmim]Br) as the solvent. JIS-10 is the first manganese phosphite with a Mn/P ratio of 2/3, whose layered framework is built by the alternate connection of Mn2O9 dimers and PO3H pseudo-tetrahedra. JIS-10 represents an antiferromagnetic dimer system with S = 5/2 for each Mn2+ ion.