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Your search keyword '"Li, Guan"' showing total 3 results
Start Over Author "Li, Guan" Topic crystal structure Journal inorganic chemistry communications
3 results on '"Li, Guan"'

1. Two cobalt(II) coordination polymers based on carboxylate ligand: Preparation, crystal structures and magnetic properties

Author

Li Guan, Yan-Hong Zhou, and Hong Zhang

Subjects
Materials science, Ligand, chemistry.chemical_element, Infrared spectroscopy, Crystal structure, Ring (chemistry), Inorganic Chemistry, Crystallography, chemistry.chemical_compound, chemistry, Pyridine, Materials Chemistry, Carboxylate, Physical and Theoretical Chemistry, Single crystal, Cobalt
Abstract

Two new coordination polymers, [Co2(L)1.5(OH)(H2O)2]·2H2O (1) and [CoL(bpp)] (2) (H2L = 2,5-dibenzoylterephthalic acid and bpp = 1,3-bis(4-pyridyl)propane), have been synthesized and characterized by elemental analyses, IR spectra, and thermogravimetric analyses. Their structures were determined by single crystal X-ray diffraction analyses. Complex 1 exhibits a 3D framework assembled from tetra-nuclear cobalt-oxygen bridged by carboxylic O atoms with a (412·63) topology. Complex 2 possesses a 2D layered structure which extends into a 3D architecture via C–H···π interaction between propane proton and the phenyl ring or pyridine ring of an adjacent sheets. Furthermore, the magnetic properties of them are discussed.

Published
2010

2. A new 3D coordination framework with helical chains in mixed ligands system: Preparation, crystal structure and magnetic property

Author

Hong Zhang, Li Guan, and Yan-Hong Zhou

Subjects
Thermogravimetric analysis, Materials science, Coordination polymer, Metal ions in aqueous solution, Infrared spectroscopy, Crystal structure, Hydrothermal circulation, Inorganic Chemistry, Crystallography, chemistry.chemical_compound, chemistry, Elemental analysis, Materials Chemistry, Physical and Theoretical Chemistry, Single crystal
Abstract

A new 3D coordination polymer [Ni2(L)2(bpp)2(μ2-H2O)] (1) (H2L = 2,4-dibenzoylisophthalic acid and bpp = 1,3-bis(4-pyridyl)propane) has been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectra, and thermogravimetric analysis. Further, it was determined by single crystal X-ray diffraction analysis. Compound 1 is a 3D network with (36·48·57) topology, which comprises of two kinds of helical chains. Additionally, compound 1 shows ferromagnetic interactions among metal ions.

Published
2010

3. Synthesis, Structure and Luminescence Characterizations of Pyramid-like Lanthanide-Titanium-Oxo Clusters EuTi9 and TbTi9.

Author

Meng, Fankun, Liu, Wei-Dong, Li, Guan-Jun, Deng, Jinjun, and Kong, Xiang-Jian

Subjects
*RARE earth metals, *LUMINESCENCE, *METAL ions
Abstract

[Display omitted] • Two lanthanide − titanium oxo clusters EuTi 9 and TbTi 9 protected by four kinds of ligands were prepared. • The EuTi 9 and TbTi 9 cluster core containing ten metal ions shows pyramid-like structure. • EuTi 9 and TbTi 9 display the temperature-dependent luminescence properties. Two pyramid-like lanthanide − titanium − oxo clusters formulated as LnTi 9 (µ 2 -O) 5 (µ 3 -O) 7 (µ 3 -OH) 2 (O i Pr)(acac) 2 (TCA) 10 (THF) (LnTi 9 , Ln = Eu / Tb, HTCA = 2-thiophenecarboxylic acid) were prepared through the reaction of Ln(acac) 3 , 2-thiophenecarboxylic acid (HTCA), Ti(O i Pr) 4 and THF. The 10-nuclearity-metal-core [LnTi 9 (µ 2 -O) 5 (µ 3 -O) 7 (µ 3 -OH) 2 ]13+ is protected by four kinds of ligands. EuTi 9 and TbTi 9 exhibit characteristic emissions of Eu3+ / Tb3+ under ultraviolet excitation. The temperature-dependent luminescence results show EuTi 9 shows a good linear relationship between the luminescence intensity and temperature range of 80–320 K, while TbTi 9 has high temperature-sensitivity in different temperature ranges. [ABSTRACT FROM AUTHOR]

Published
2022
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