Two coordination polymers, [ML2]n (M = Co (1), Ni (2), L = 3-aminobenzoic acid anion), were synthesized by hydrothermal reaction, and their crystal structures were determined by X-ray diffraction analysis. Both compounds crystallize in monoclinic, space group P21/n with a = 8.8029(8), b = 4.5297(4), c = 15.2002(14) ?, β = 105.6280(10)o, C14H12CoN2O4, Mr = 331.19, Z = 2, V = 583.69(9) ?3, Dc = 1.884 g/cm3, μ =1.490 mm–1, F(000) = 338, R = 0.0234 and wR = 0.0679 for 1337 observed reflections (I > 2σ (I)) for 1, and a = 8.7501(7), b = 4.5191(4), c = 15.1448(12) ?, β = 105.7730(10)o, C14H12 NiN2O4, Mr = 330.97, Z = 2, V = 576.31(8) ?3, Dc = 1.907 g/cm3, μ = 1.703 mm–1, F(000) = 340, R = 0.0206 and wR = 0.0572 for 1209 observed reflections (I > 2σ(I)) for 2. In the title complexes, the M (II) ion presents an octahedral geometry with four oxygen donors in the equatorial positions and two nitrogen donors in the axial positions. Each of the complexes has a two-dimensional network structure that is formed by the bridging of the ligand in a μ3-bridging mode via its amino and carboxyl groups.
A one-dimensional double-chain coordination polymer [Mn(phen)(tsgluo)] was synthesized in a mixed solution and its crystal structure was determined by X-ray diffraction method. It crystallizes in orthorhombic system with space group P212121. The crystal data are: a=0.530 78(17) nm, b=1.723 9(5) nm, c=2.456 9(8) nm, Z=4, μ=0.729 mm-1, Dc=1.579 g·cm-3, V=2.248 1(12) nm3, R1=0.033 1, ωR2=0.078 9. In the title complex, each Mn(Ⅱ) ion presents a octahedral geometry with the coordination of two nitrogen atoms from 1,10-phenanthroline and four oxygen atoms from three different tsgluo2- ligands. The γ-carboxyl coordinates to Mn(Ⅱ) in the mode of bidentate chelate, while the α-carboxyl coordinates in a bidentate bridging mode. CCDC: 253910.
Two new ternary complexes [Zn(3-aba)2(phen)]’2.58H2O 1 and {[Cd(3-aba)- (phen)2]’(NO3)’(1.5H2O)}n 2 (3-aba = 3-aminobenzoic acid anion, phen = 1,10-phenanthroline) were synthesized and characterized by elemental analysis, IR, UV spectrum and X-ray diffraction. Complex 1 crystallizes in the rhombohedral system, space group R 3 with a = 3.5733(3), b = 3.5733(3), c = 1.1231(2) nm, V = 12.419(3) nm3, C26H25.17N4O6.58Zn, Mr = 564.37, Z = 18, F(000) = 5253, μ = 0.937 mm–1, Dc = 1.358 g/cm3, R = 0.0668 and wR = 0.1690 for 2424 observed reflections (I > 2σ(I)). Complex 2 belongs to the tetragonal system, space group P4/ncc with a = 2.88451(10), b = 2.88451(10), c = 1.55571(11) nm, V = 12.9441(11) nm3, C31H25CdN6O6.50, Mr = 697.97, Z = 16, F(000) = 5648, μ = 0.727 mm–1, Dc = 1.433 g/cm3, R = 0.0607 and wR = 0.1742 for 3468 observed reflections (I > 2σ(I)). Complex 1 displays a mononuclear structure. The carboxylate group of 3-aminobenzoic acid anion coordinates to Zn(II) in a chelating bidentate mode, and the nitrogen atom of the ligand does not involve in coordination. Complex 2 exhibits a one-dimensional chain structure with 3-aminobenzoic acid anion coordinating to Cd(II) in a μ2-bridging mode through its nitrogen atom and one of its oxygen atoms.
