Synthesis, structural characterisation and magnetic studies of polymetallic iron phosphonate cages†
Abstract
Four new polymetallic iron(III) phosphonate cages have been made and structurally characterised. These are an octanuclear cage [Fe8O3(OH)2(O2CtBu)11(PhCH2PO3)3(py)3], a decanuclear cage [Fe10O2(OH)8(O2CtBu)10(PhCH2PO3)4(pip)2], a heterometallic cage [Fe6Li5(μ3-O)2(tBuPO3)6(O2CtBu)8(MeOH)2(Py)4] and a tridecanuclear cage [Et3NH]2[Fe13(μ3-O)3(μ2-OH)7(tBuPO3)7(Me3CCO2)14(H2O)] (pip =