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12 results on '"Wang, Li‐Ya"'

10. Synthesis, Crystal Structure and Magnetic Properties of a 1-D Polymer, [Cu(NITpPy)2(H2TCB)(H20)]·2H2O

Author

Jiang Zong-Hui, Li Licun, Yan Shiping, Liao Dai-Zheng, and Wang Li-Ya

Subjects
chemistry.chemical_classification, Crystallography, chemistry, Crystal data, chemistry.chemical_element, Mineralogy, General Chemistry, Crystal structure, Polymer, Triclinic crystal system, Inductive coupling, Copper, Magnetic susceptibility
Abstract

A novel complex [Cu(NnpPy)2(HlTCB)(H1O)]·2H2O (NITpPy = 2-(pyrid-4′-yl)-4,4,5,5-tetramethyl-1, 3-dioxoimidazoline; H2TCB = 1, 5-dicarboxybenzene carboxylic-2, 4-diacid) has been synthesized and characterized by X-ray crystallography analysis. The crystal structure consists of infinite chains of Cu-(NITpPy)2(H2O) units linked by H2TCB ligands. The complex crystallizes in triclinic system with space group PI. Crystal data: a = 1.0594(2) nm, b = 1.3830(3) nm, c = 1.5551(3) nm, a = 67.75(3)°, β = 89.83(3)°, γ = 70.54(3)°. The variable magnetic susceptibility studies lead to magnetic coupling constant values of J1= −11.18 cm-1 (Cu—Rad) and J2 = −4.06 cm−1 (Cu—Cu).

Published
2010

11. Two Cu(II) Complexes Constructed from 5-Methylisophthalic Acid with Structurally Similar Dipyridyl Ligands.

Author

Ma, Lu-Fang, Li, Xiu-Qin, Wang, Li-Ya, and Hou, Hong-Wei

Subjects
METAL complexes, COPPER compounds, ORGANIC acids, LIGANDS (Chemistry), CRYSTALLOGRAPHY, CHEMICAL reactions, COMPLEX compounds synthesis, MOLECULAR structure, MAGNETIC properties of complex compounds
Abstract

Two complexes, [Cu2(mip)2(bpa)]n (1) and [Cu2(mip)2(dpe)]n (2) [H2mip [image omitted] 5-methylisophthalic acid; bpa [image omitted] 1,2-Bis(4-pyridyl)-ethane; dpe [image omitted] 1,2-Di(4-pyridyl)-ethylene], have been prepared by hydrothermal reactions of Cu(II) salt and 5-methylisophthalic acid system with structurally similar dipyridyl ligands and characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray analysis. Their X-ray crystal structures show that both of the two complexes belong to the monoclinic system, P21/n space group, [image omitted] [image omitted] 7.9615(8) Å, [image omitted] [image omitted] 15.7148(17) Å, [image omitted] [image omitted] 11.7437(12) Å, [image omitted] [image omitted] 101.8880(10)○ and [image omitted] [image omitted] 7.9000(10) Å, [image omitted] [image omitted] 15.600(2) Å, [image omitted] [image omitted] 11.8063(15) Å, [image omitted] = 100.859(2)° for 1 and 2, respectively. The two complexes have 8-membered rings resulting from dimeric Cu(II) units bridged by tridentate H2mip ligands and further form two-dimensional layered structures, which are then extended into a 2-fold interpenetrating three-dimensional network through bpa and dpe co-ligands, respectively. Moreover, the magnetic properties of 1 are investigated and antiferromagnetic interactions are observed. [ABSTRACT FROM AUTHOR]

Published
2011
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12. Hydrothermal Syntheses, Crystal Structures, and Properties of Two Lanthanide Complexes Based on the 4-Hydroxy Pyridine 2, 6-Dicarboxylate and Water Ligands.

Author

Feng, Xun, Li, Guan-Feng, Li, Tie-Fu, and Wang, Li-Ya

Subjects
INORGANIC synthesis, CRYSTALLOGRAPHY, RARE earth metal compounds, METAL complexes, PYRIDINE, LIGANDS (Chemistry), WATER, MOLECULAR structure
Abstract

Two lanthanide complexes, [Ln(HCAM)2(OH-Py)·3H2O]· 2H2O (HCAM = 4-hydroxypyridine-2, 6-dicarboxylate, OH-Py = 4-hydroxypyridine; Ln = Ce(1), Tb(2), have been synthesized and characterized by elemental analysis, IR spectroscopy, and X-ray single-crystal diffraction. X-ray diffraction reveals that the two complexes are isostructural, crystallizing in monoclinic system, space group of P2(1)/c, and each forms monomeric structure. The complexes exhibits one dimensional (1-D) zigzag chain array, and these 1-D chains are further linked into 3D supramolecular frameworks by extensive intra and intermolecular hydrogen-bonding and the π-π stacking interactions. The luminescence emission spectra of the complexes vary depending on which lanthanide ion is present. [ABSTRACT FROM AUTHOR]

Published
2011
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