We present here the synthesis, IR-spectra and the temperatures of the
transition to a ferromagnetic state (T-c) of layered ferromagnets [R3R
'X]MCr(C2O4)(3), M = Mn, Fe, Co, Ni, CII with the cations [Ph3BuP](+)
ard [Bu3R'N](+) (R' = C3H7, C2H5, CH3) capable of sequentially changin
g the distances between metal oxalate layers. T-c has been found to be
independent of the size of the organic cation.