Syntheses, Crystal Structures and Properties of Mn(II) and Co(II) Coordination Complexes Based on 1,10-Phenanthroline Derivative(1)

Two new coordination complexes [Mn(L)(2)(DNSA)] (1) and [Co(L)(1,4-bdc)(n) (2) have been achieved under hydrothermal conditions (H(2)DNSA = 3,5-dinitro-salicylic acid, 1,4-bdc = 1,4-benzenedicarboxylic acid and L = 2-(2-fluoro-6-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline). 1 crystallizes in monoclinic, space group P2(1)/c with a = 15.871(3), b = 17.274(4), c = 16.078(3) angstrom, = 113.03(3), V = 4056.6(16) angstrom(3), Z = 4, C45H22C12F2MnN10O7, M-r = 978.57, D-c = 1.602 g/cm(3), F(000) = 1980, mu(MoKa) = 0.536 mm(-1), R = 0.0437 and w/R = 0.1065. 2 belongs to the monoclinic system, space group C2/c with a = 14.665(2), b = 30.856(4), c = 11.237(2) angstrom, beta = 111.166(2)degrees, V = 4742.0(12) angstrom(3), Z = 8, C27H14ClCoFN4O4, M-r = 517.80, D-e, = 1.602 g/cm(3), F(000) = 2312, mu(MoKa) = 0.889 mm(-1), R = 0.0364 and w/R = 0.0862. The central Mn(II) ion in 1 is six-coordinated by four nitrogen atoms from two L ligands and two oxygen atoms from one DNSA anion. In 2, the two kinds of 1,4-bdc ligands link neighboring Co(II) atoms to yield a two-dimensional layer structure. The luminescence of 1 has been studied in detail. Moreover, thermal behaviors of 1 and 2 are also investigated.