Syntheses and Characterization of Two New Alkaline Earth Metal-organic Topological Frameworks with 3-Amino-1H-1,2,4-triazole-5-carboxylate

Two new alkaline earth metal coordination polymers constructed from the deriva-tive of 1,2,4-triazole are presented herein,namely,{[Sr（AmTAZAc）2（H2O）]}（1） and {[Ba（AmTAZAc）2（H2O）]}（2）（AmTAZAc = 3-amino-1H-1,2,4-triazole-5-carboxylate）,which have been synthesized by using the layering method and structurally characterized by elemental analysis,IR,and single-crystal X-ray diffraction.Complexes 1 and 2 are isostructural,and both crystallize in the orthorhombic system,space group Fdd2.X-ray structural analysis shows that 1 or 2 has an intriguing 3-D infinite network of（318.438.510） topology based on a 2-D sheet structure of（4,4） net.The result shows that noncovalent interactions play an important role in strengthening the whole structures of the compounds.

A topological framework for real-time 3D weather radar data processing

Real-time 3D weather radar data processing makes it possible to efficiently simulate meteorological processes in digital Earth and support the assessment of meteorological disasters.The current real-time meteorological operation system can only deal with radar data within 2D space as a flat map and lacks supporting 3D characteristics.Thus,valuable 3D information imbedded in radar data cannot be completely presented to meteorological experts.Due to the large amount of data and high complexity of radar data 3D operation,regular methods are not competent for supporting real-time 3D radar data processing and representation.This study aims to perform radar data 3D operations with high efficiency and instant speed to provide real-time 3D support for the meteorological field.In this paper,a topological framework composed of basic inner topological objects is proposed along with the quadtree structure and LOD architecture,based on which 3D operations on radar data can be conducted in a split second and 3D information can be presented in real time.As the applications of the proposed topological framework,two widely used 3D algorithms in the meteorological field are also implemented in this paper.Finally,a case study verifies the applicability and validity of the proposed topological framework.

One New 3D Pillared-layer Ag(Ⅰ)-Coordination Framework Based on a Unique 1D Ag2O2 Ribbon： Synthesis,Crystal Structure and Luminescent Properties

A new 3D Ag（I） coordination polymer {[Ag（AZDB）（0.5）（bpe）（0.5）]·H2O}n（1） has been papared by azobenzene-3,3？-dicarboxylicate（H2AZDB）, 1,2-bis（4-pyridyl）ethylene（bpe） and silver salts via hydrothermal method. The compound was fully characterized by single-crystal X-ray diffraction, elemental analyses, infrared spectrum（IR）, powder X-ray diffraction（PXRD） and thermogravimetric analysis（TGA）. The strucrural analysis indicate that compound 1 shows a 3D pillared-layer framework constructed from a unique 1D Ag2O2 ribbon and pyridyl/carboxylicate mixed system, which features a 2-nodal（4, 6）-connected fsc net with a（4^4·6^10·8）（4^4·6^2） topology.Moreover, the photoluminescent properties have also been discussed.

Hydrothermal Synthesis, Crystal Structure, Magnetic Properties and Network Topology of a Novel Binuclear Co(Ⅱ) Coordination Polymer_∞~1[Co_2(4,4'-bpy)_2(L)_4](bpy = Bipyridine, HL = 2-Fluorbenzoic Acid)

One novel binuclear Co（Ⅱ） coordination polymer ∞ [Co2（4,4＇-bpy）2（L）4] （1, bpy = bipyridine, HL = 2-fluorbenzoic acid） has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complex 1 crystallizes in the monoclinic system, space group P21/c with a = 11.163（2）, b = 21.943（4）, c = 9.6381（19） A, β = 113.92（3）°, V= 2158.2（7） A3, Z= 4, Dc = 1.518 g/cm^3, Mr = 493.31, F（000） =1004, R = 0.0303 and wR = 0.0808 for 3614 observed reflections （I〉 2σ（I））. Complex I exhibits a 3D Schlafli symbol （4.62）（4.66.83） topological framework, and the magnetic characterization shows weak antiferromagnetic coupling exchange between two Co ions.

A Zn(Ⅱ) Coordination Polymer with 4-Connected bbf Topology： Synthesis, Crystal Structure and Luminescent Property

A new Zn（Ⅱ） compound, namely {Zn（BTA）（pdc）0.5}n（1, HBTA = 1,2,3-benzotriazole, H2pdc = terephthalic acid）, has been hydrothermally synthesized and characterized by elemental analysis, infrared analysis, powder X-ray diffraction analysis and single-crystal X-ray structural analysis. The crystal structure is of monoclinic system, space group P21/c with a = 10.751（3）, b = 9.792（3）, c = 9.292（3）A, β = 95.391（4）°, V = 973.9（5） A^3, C10H6N3O2 Zn, Mr = 265.57, Z = 4, Dc = 1.811 g/cm3, F（000） = 532, μ = 2.506 mm-1, R = 0.0221 and w R = 0.0605 for 2075 observed reflections（I 〉 2s（I））. Single-crystal X-ray structural analysis reveals that compound 1 features a three-dimensional（3D） framework with 4-connected bbf topology. Moreover, the thermogravimetric（TG） analysis and photoluminescent property of 1 were also discussed.

A Novel Zn(Ⅱ)Complex with 4-Connected umc Topology:Synthesis,Crystal Structure and Luminescent Property

A novel complex, [Zn（L）]2·H2O（1, H2 L = 4-aminophthalic acid）, has been hydrothermally prepared and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental analysis and PXRD. Complex 1 crystallizes in monoclinic, space group C2/c with a = 12.4267（6）, b = 7.7482（3）, c = 18.6983（8） A, β = 110.437（3）°, V = 1687.04（13） A3, Z = 4, C16H12N2O9Zn2, Mr = 507.06, Dc = 1.996 g/cm3, μ = 2.903 mm-1, S = 0.989, F（000） = 1016, the final R = 0.0304 and w R = 0.0720 for 12618 observed reflections（I 〉 2σ（I））. Single-crystal X-ray structural analysis reveals that compound 1 features a three-dimensional（3D） framework with 4-connected umc topology. Moreover, the thermogravimetric（TG） analysis and photoluminescent property of 1 were also discussed.