Syntheses, Crystal Structures and Magnetic Studies of Two Mn(II) Complexes Based on 2-Pyrimidineamidoxime

Two novel manganese(II) complexes, [Mn(pmadH(2))(2)(3-Sb)](n) (1) and {[Mn(pmadH(2))(Hssal)(H2O)]center dot 2H(2)O}(n) (2) (pmadH(2) = 2-pyrimidineamidoxime, 3-Sb = 3-sulfobenzoate dianion, H(3)ssal = 5-sulfosalicylic acid), have been successfully obtained. The two complexes were characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermal gravimetric analysis, infrared spectra and elemental analysis. They are one-dimensional manganese polymer (1) and two-dimensional manganese complex (2), respectively. The values of chi T-m at 300 K of 1 and 2 are lower than the spin-only value for the non-interacting Mn(II) ion (S = 5/2).