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Geng-Lin Wang

Bio: Geng-Lin Wang is an academic researcher from Nankai University. The author has contributed to research in topics: Crystal structure & Magnetic susceptibility. The author has an hindex of 25, co-authored 135 publications receiving 2078 citations. Previous affiliations of Geng-Lin Wang include Qufu Normal University & Peking University.


Papers
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TL;DR: In this paper, the electrochemical and spectral properties of three copper(II) complexes were investigated by cyclic voltammetry, electronic and ESR spectra, and the results from spectroscopic and redox studies were consistent with the crystallographic results and perfectly related to each other.
Abstract: The electrochemical and spectral behaviors of three copper(II) complexes [CuL1] 1, [CuL2] 2 and [CuL3] 3, where L1, L2 and L3 are the dianions of macrocyclic oxamido Schiff bases, have been investigated by cyclic voltammetry, electronic and ESR spectra. These macrocyclic complexes, which incorporate both oxamido and imine groups, can undergo quasi-reversible reduction (CuII → CuI) and oxidation (CuII → CuIII). The crystal structures of 1 and 2 have been determined by single-crystal X-ray analysis. The difference in ring size leads to significant differences in molecular and crystal structure, electronic and ESR spectra and redox behavior. In the [14]N4 macrocyclic complex, 2, the CuN4 chromophore assumes a nearly square-planar co-ordination geometry, but the geometry in the [15]N4 macrocyclic complex, 1, is distorted towards tetrahedral. The results from spectroscopic and redox studies are consistent with the crystallographic results and perfectly related to each other. The main factors that determine the relative stability of CuI and CuIII in these complexes are the size, geometry and flexibility of the co-ordination cavity.

81 citations

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TL;DR: In this paper, three heterobinuclear complexes have been synthesized, namely [Cu(oxpn)Ni(L) 2 ](ClO 4 ) 2 ·CH 3 OH·H 2 O, where oxpn is N,N′ -bis(3-aminopropyl)oxamido.

72 citations

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TL;DR: A bimetallic compound consisting of a one-dimensional chain of hydrogen bonds has been determined and its crystal structure determined in this article, where the structure consists of a unique step-shaped two-dimensional network.
Abstract: A bimetallic compound [Cu(dien)] 3 [Fe(CN) 6 ] 2 · 6H 2 O (dien = diethylenetriamine) has been prepared and its crystal structure determined: space group P2 1 /a, a = 14.896(3), b = 14.128(5), c = 20.267(6) A, β = 96.31(3)° and Z = 4. The structure consists of a one-dimensional chain of {[Cu(dien)] 2 [Fe(CN) 6 ]} + cations and binuclear {[Cu(dien)(H 2 O)][Fe(CN) 6 ]} - moieties bridged by one CN - ligand of the [Fe(CN) 6 ] 3- anion. The chains are linked by hydrogen bonds giving rise to a unique step-shaped two-dimensional network. In the crystal all the copper(II) ions have a distorted square-based-pyramidal geometry. From magnetic susceptibility measurements the complex was found to exhibit a weak ferromagnetic interaction between the copper(II) and iron(III) atoms.

61 citations

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TL;DR: The sodium ion links two tetranuclear subunits via the exo oxygen atoms of the oxamido macrocyclic ligands which results in a novel nonanuclear complex.
Abstract: Two new nonanuclear lanthanide(III)-copper(II) complexes of macrocyclic oxamide [NaPr(2)(CuL)(6)(H(2)O)(6)](ClO(4))(6)Cl small middle dot6H(2)O (1) and [NaNd(2)(CuL)(6)(H(2)O)(6)](ClO(4))(6)Cl small middle dot8H(2)O (2) have been synthesized and characterized by means of elemental analysis, IR, and electronic spectra, where L = 1,4,8,11-tetraazacyclotradecanne-2,3-dione. The crystal structures of the two complexes have been determined. The structures of 1 and 2 consist of nonanuclear cations, perchlorate and chloride anions, and water molecules. In the two complexes, each copper(II) ion is connected to lanthanide(III) ion via the exo-cis oxygen atoms of the oxamido macrocyclic ligands, resulting in a tetranuclear subunit. The sodium ion links two tetranuclear subunits via the exo oxygen atoms of the oxamido macrocyclic ligands which results in a novel nonanuclear complex. The magnetic properties of the two complexes have been investigated. Preliminary treatment of the magnetic data by considering Ln(III) as free ion cannot give reasonable results, and accurate models involving both the orbital contribution and ligand field effect have to be developed.

53 citations


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TL;DR: In this paper, a review of the application of metal-organic frameworks (MOFs) in photocatalytic degradation of organic pollutants is presented, where the reported examples are collected and analyzed; and the reaction mechanism, the influence of various factors on the catalytic performance, involved challenges, and the prospect are discussed and estimated.
Abstract: Efficient removal of organic pollutants from wastewater has become a hot research topic due to its ecological and environmental importance. Traditional water treatment methods such as adsorption, coagulation, and membrane separation suffer from high operating costs, and even generate secondary pollutants. Photocatalysis on semiconductor catalysts (TiO2, ZnO, Fe2O3, CdS, GaP, and ZnS) has demonstrated efficiency in degrading a wide range of organic pollutants into biodegradable or less toxic organic compounds, as well as inorganic CO2, H2O, NO3−, PO43−, and halide ions. However, the difficult post-separation, easy agglomeration, and low solar energy conversion efficiency of these inorganic catalysts limit their large scale applications. Exploitation of new catalysts has been attracting great attention in the related research communities. In the past two decades, a class of newly-developed inorganic–organic hybrid porous materials, namely metal–organic frameworks (MOFs) has generated rapid development due to their versatile applications such as in catalysis and separation. Recent research has showed that these materials, acting as catalysts, are quite effective in the photocatalytic degradation of organic pollutants. This review highlights research progress in the application of MOFs in this area. The reported examples are collected and analyzed; and the reaction mechanism, the influence of various factors on the catalytic performance, the involved challenges, and the prospect are discussed and estimated. It is clear that MOFs have a bright future in photocatalysis for pollutant degradation.

1,338 citations

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TL;DR: In this article, the role of the shape of coordinating ligands and of different metal ions in directing the synthesis totally or preferentially towards mono-, di- or poly-nuclear entities is discussed.

871 citations

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TL;DR: In this article, the spin-Hamiltonian formalism is used to model the magnetic parameters of the zero-field splitting (ZFS) system, and the energy levels for a variety of spins are generated.

768 citations

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TL;DR: In this article, the structures and magnetism of complex-based metal assemblies derived from [M(CN) 6 ] n − (M=Cr 3+, Mn 3+, Fe 3+ and Co 3+ ), Fe 2+ ; n =3, 4) and coordinatively unsaturated [M A (L) x ] m + (M A =Mn 2+, Ni 2+, Cu 2+ and Mn 3+, Fe 3+, and L=polyamine ligand, salen 2− derivatives) are reviewed.

649 citations

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TL;DR: A nanotubular 3D heterometallic zeolitic polymer was designed and synthesized by simply tuning the amount of coordinated water on the Mn ion in the molecular ladder polymer.
Abstract: A nanotubular 3D heterometallic zeolitic polymer, {[Yb(PDA)3Mn1.5(H2O)3]·1.5H2O}n (2), was designed and synthesized by simply tuning the amount of coordinated water on the Mn ion in the molecular ladder polymer {[Yb(PDA)3Mn1.5(H2O)6]·6H2O}n (1). 1 and 2 were structurally and magnetically characterized. The water molecules capsulated within the nanotube were arrayed into an unprecedented “water” pipe. The robust 2 retained intact networks after the removal of guest water trapped in the nanotubes and even after methanol replaced guest water.

562 citations