The synthesis and the magnetic characterization of new layered compounds of formula Cr[NH3(CH2)(2)PO3(CI)], Fe[C6H5PO3]. H2O and Fe-2[O3P-(CH2)(2)-PO3]. 2H(2)O is presented. The compounds order antiferromagnetically at the critical temperature T-N, which is at 4.9K for the first one. at 21.5K for the second and at 24K for the third one. Below TN: they all behave as a weak ferromagnet.