Bernal Institute Department of Chemical Sciences University of Limerick Limerick V94 T9PX Republic of Ireland;Department of Chemistry University of Western Ontario London Ontario N6A 5B7 Canada;Department of Chemistry University of South Florida 4202 East Fowler Avenue, CHE205 Tampa FL 33620-5250 USA;Department of Chemistry University of Ottawa Ottawa Ontario K1N 6N5 Canada;Key Laboratory of Functional Organometallic Materials College of Chemistry and Materials Science Hengyang Normal University Hengyang Hunan 421008 China
[Zhang, Fu-Xing; Sheng, Liang-Bing; Chen, Man-Sheng; Liu, Meng-Qin] Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Hunan Prov Univ Key Lab Funct Organometall Mat, Coll Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
[Sheng, LB; Chen, MS] H;Hengyang Normal Univ, Key Lab Funct Met Organ Cpds Hunan Prov, Hunan Prov Univ Key Lab Funct Organometall Mat, Coll Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
Electrospray-ionization mass spectrometry;Heteronuclear;Homonuclear;One-dimensional chain;Structure
The organic ligand (E)-8-hydroxyquinoline-2-carbaldehyde oxime (H2L) was used to react with Ni(CH3COO)(2)center dot 4H(2)O and NaN(CN)(2) at 100 degrees C to obtain the complex [Ni3Na(HL)(3)(L)(2)](n)center dot 4nCH(3)CN (1). Interestingly, the five ligands in the structure chelate three Ni ions, and the uncoordinated O on the ligand captures one Na+. However, the above scheme remains the same, and after adding isonicotinic acid (ina), it obtained the complex [Ni-4(HL)(4)(L)(2)](2)center dot 2CH(3)CN (2), which eight Ni2+ ions are coordinated by twelve ligands. The component distribution of the complexes in different solutions was measured by electrospray-ionization mass spectrometry (ESI-MS). It was found that the complexes exhibited different component distribution in different solutions. Not only the existence of low-nuclear molecular ion peaks could be monitored, but even higher-nuclear components could also be detected, and the alkali metal ions could be effectively identified. It was indicating that the compounds would assemble differently in different solutions. Surprisingly, homonuclear clusters 2 was providing a basis for further directing the directed synthesis of higher nuclear clusters. (C) 2019 Published by Elsevier Ltd.
Chen, Mansheng;Chen, Shoushun;Chen, Wei;Lucier, Bryan E. G.;Zhang, Yue;...
CHEMISTRY OF MATERIALS,2018年30(11):3613-3617 ISSN：0897-4756
[Chen, Mansheng; Chen, Shoushun; Zhang, Yue; Lucier, Bryan E. G.; Huang, Yining] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada.;[Chen, Mansheng] Hengyang Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Organometall Mat, Hengyang 421008, Hunan, Peoples R China.;[Chen, Wei; Zheng, Anmin] Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China.;[Chen, Wei] Chinese Acad Sci Univ, Beijing 100049, Peoples R China.
[Huang, Yining] U;Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada.
Gas adsorption within the prototypical amidefunctionalized metal-organic frameworks (MOF) Cu(INAIP) has been thoroughly investigated using a combination of single crystal XRD (SCXRD), solid-state NMR (SSNMR) and computational methods. SCXRD was used to locate the exact gas adsorption sites, whereas VT SSNMR spectra were able to probe the local environment about adsorbed gases across a large temperature range, yielding information on the presence and position of nearby paramagnetic metal centers. Computational methods have identified the various interactions responsible for the adsorption of gas molecules, yielding key insights into the host−gas interactions that are unavailable by direct experimental measurement. A cooperative binding model was found to exist in Cu(INAIP) in which the carbonyl group of the amide plays different roles in the adsorption of specific gas molecules, strengthening our understanding of host-gas interactions and gas adsorption in amide-functionalized MOFs.
Shoushun Chen;Bryan E. G. Lucier;Mansheng Chen;Victor V. Terskikh;Yining Huang
Chemistry - A European Journal,2018年24(35):8695-8695 ISSN：0947-6539
Department of Chemistry University of Western Ontario London Ontario N6A 5B7 Canada;Key Laboratory of Functional Organometallic Materials College of Chemistry and Materials Science Hengyang Normal University Hengyang Hunan 421008 China;Department of Chemistry University of Ottawa Ottawa Ontario K1N 6N5 Canada
[Mansheng Chen; Chunhua Zhang; Weiwei Fu; Dongcheng Liu; Fupei Liang] Key Laboratory of Functional Organometallic Materials of Hengyang Normal University, College of Hunan Province, College of chemistry and Materials Science;[Mansheng Chen; Chunhua Zhang; Weiwei Fu; Dongcheng Liu; Fupei Liang] Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and pharmaceutical Sciences, Guangxi Normal University
The 4th International Congress on Advanced Materials (AM2018)
As we know, metal-organic frameworks(MOFs) are new generation of porous materials which are constructed via the coordination bonds between metal ions/clusters and organic functional ligands.For MOFs,
Two complexes [Ag(bpy)(H2O)](Hbac) (1) and [Ag-2(bpy)(2)(H2O)(2)](pdc)(H2O)(5) (2) (H(2)bac = benzilic acid, bpy = 4,4 '-bypyridine, H(2)pdc = 2,6-pyridinedicarboxylic acid) have been synthesized and characterized by IR, element analysis, X-ray-single crystal diffraction and TGA. Crystal data for 1: Monoclinic, space group C2/c, alpha = 18.8192(5) a, b = 12.7131(5) a, c = 17.8373(8) a, beta = 95.745(4), V = 4246.1(3) a(3) and Z = 8; 2: Triclinic, space group, P-1, alpha = 8.132(5) a, b = 10.485(6) a, c = 18.026(10) a, alpha = 96.194(10), beta = 91.047(11), gamma = 105.866(10), V = 1468.0(15) a(3) and Z = 2. In complex 1, Ag(I) is coordinated by two discrete 4,4'-bpy ligands and one water molecule and Hbac(-) behaves as a counterpart anion. In the crystal, a 3D network was formed by hydrogen bonds and pi pi face-to-face interactions. In complex 2, Ag(I) is also coordinated by two discrete 4,4'-bpy ligands and one water molecule and pdc(2-) behaves as a counterpart anion, too. In the crystal, a similar 3D network was formed by hydrogen bonds and pi pi face-to-face interactions as well as that of complex 1. The luminescence properties of 1 and 2 have been investigated.
Reaction of CdCl_2 or ZnCl_2·4H_2O, 5-hydroxyisophthalic acid (5-OHH_2IP) as well as l,5-bis(2-ethyl-imidazolyl)pentane(BEIP) results in formation of a ID [Cd(BEIP)(Cl)_2]_n (1) and 2D [Zn(BEIP)(5-OHIP)]_n (2). X-ray diffraction crystal structure analysis shows that 1 crystallizes in orthorhombic system, space group Pca21, while 2 is of monoclinic, space group P2_1/n with β =100.542 (4)°. In 1, the 1,5-bis (2-ethyl-imidazolyl)pentane links all the Cd atoms into a ID chain. In 2, the carboxylate group withμ2-η1:η1 coordination mode links metal atoms to give a ID zigzag chain structure, which forming the 2D layer through Zn-N interactions by BEIP ligands. Finally the 2D layers are further assembled into 3D framework by the H-bond interaction. In addition, the properties of complexes 1 and 2 have been investigated, which exhibit good fluorescence in the solid state at room temperature. And complex 2 shows good photocatalytic activity for the degradation of methyl orange solution.
This paper reported a novel method to synthesize porous ZnO/ZnFe2O4 particles by chemically etching ZnO/ZnO2O4/SO2 composite particles in an alkaline solution, and the porosity of the particles could be tailored by controlling the concentration of SO2 in the ZnO/ZnO2O4/SO2 composites. The photocatalytic performance of both solid and porous ZnO/ZnFe2O4 particles was investigated in methylene blue (MB) degradation reaction. The results showed that the particles with higher porosity displayed a higher catalytic performance, which was indicated by a larger first-order reaction constant (κ) and an improved degradation efficiency (η). Moreover, the magnetization of the particles could be used for the magnetic separation of catalysts after reactions.