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3 Polish Journal of Chemistry

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Hydrothermal Synthesis and Structures of Two Isostructural Mixed Complexes of Cd and Mn with 2,3-Dicarboxylatopyrazine and Phenanthroline

Zhang M. -S., Sun B. -W., Fang R. -B., Zhao Q. -H.

Polish Journal of Chemistry

2009

Vol. 83, nr 10

1701-1706

Two polyaromatic acid transition metal complexes: {[Cd(phen)(O2C)2C4N2H2]źH2O}n (1), and {[Mn(phen)(O2C)2C4N2H2]źH2O}n (2) (phen = 1,10-phenanthroline) have been hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction. The structural analysis reveals that compound 1 and compound 2 are almost isostructural. The metal atoms are linked by bridging 2,3-di -carboxylatopyrazine ligands to form 2-D layer network, and have a coordination number six.

Synthesis, Crystal Structure and Magnetic Properties of a Zinc(II) Complex with Nitronyl Nitroxide Radical

Zhao Q., Wang X. -F., Tang D. -Y., Fang R. -B.

Polish Journal of Chemistry

2003

Vol. 77 / nr 10

1229-1234

Anew mononuclear diamagnetic metal zinc compound [Zn(NITpPy)4(N3)2] (NITpPy = 2-(p-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) has been synthesized and characterized. The crystal structure of this compound was determined by X-ray diffraction analysis. It crystallizes in the triclinic space group PI with the ZnII ion octahedrally coordinated and bound to four radical ligands through the nitrogen atoms of the pyridine rings, and the azido groups occupy the apical positions. The compound exhibits weak intermolecular antiferromagnetic interaction between the radicals, in which the diamagnetic zinc(II) plays the role of bridge.

Syntheses and Crystal Structures of Zinc(II) Complexes with Two Kinds of Benzoate Derivatives

Zhao Q., Li H.-F., Ma Y. -P., Fang R. -B.

Polish Journal of Chemistry

2002

Vol. 76 / nr 4

497-502

Two novel zinc(II) complexes of [Zn(L1)2(phen)]_5H2O 1 (L1 = 4-aminobenzoic acid, phen = 1,10-phenanthroline) and [Zn(L2)2(en)] 2 (L2 = 4-methoxybenzoic acid, en = ethylenediamine) have been prepared and characterized by X-ray single crystal structural analysis. Complex 1 crystallizes in the tetragonal system, space group I41/a. The zinc atom of the central ZnO3N2 system is pentahedral coordinated by two N atoms of phen and three O atoms of 4-aminobenzoic acid. Complex 2 belongs to orthorhombic system, space group Pbcn. The zinc atom of the central ZnO2N2 system lies on a twofold symmetry axis and is tetrahedrally coordinated by two N atoms of en and two O atoms of 4-methoxybenzoic acid.