Synthesis and characterization of magnetic organic-inorganic nanocomposites based on the [Mn2O12{CH2C(CH3)COO}16(H2O)4] building blockElectronic supplementary information (ESI) available: figures showing the IR spectrum, molecular packing, FAB-MS spectrum and field dependence of the magnetization of [Mn12O12{CH2C(CH3)COO}16(H2O)4]�4CH2C(CH3)COOH�CH2CI2, as well as the IR spectrum of the R?=?200 copolymer and a plot of Tg as a function of R for the copolymers. See http://www.rsc.org/suppdata/nj/b4/b402080d/