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Hydrothermal Synthesis and Crystal Structure of a Novel Composite Keggin-type Arsenotungstate: [Ni(phen)_2][Hphen](AsW_(12)O_(40)) 被引量:1
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作者 WANG Jing-Ping WANG Wei NIUJing-Yang 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第2期194-198,共5页
A novel polyoxometalate-based composite compound [Ni(phen)2][Hphen](AsW12040) (phen = 1,10-phenanthroline) I has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, ESR spectroscopy... A novel polyoxometalate-based composite compound [Ni(phen)2][Hphen](AsW12040) (phen = 1,10-phenanthroline) I has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, ESR spectroscopy and single-crystal X-ray diffraction. Each structure unit of 1 consists of one polyoxoanion AsW12O40^3-, one free phenanthroline molecule and one coordination cation [Ni(phen)2]^2+. The title compound crystallizes in the orthorhombic system, space group F212121, with a = 12.2383(7), b = 21.0884(11), c = 22.3237(12) A, V= 5761.4(5) A^3, Mr = 3520.44, Z = 4, Dc = 4.059 g/cm^3, F(000) = 6204, g(MoKα) = 24.844 mm^-1, GOF = 1.022, the final R = 0.0376 and wR = 0.0742 (I 〉 2σ(I)) for 865 parameters and 9637 observed reflections with I 〉 2σ(I). 展开更多
关键词 POLYOXOTUNGSTATE hydrothermal synthesis Keggin structure ESR
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Hydrothermal Synthesis and Structure Analysis of a Chromium Complex [Cr(aea)]_2(OH)_2(aea =N-(2-Aminoethyl)aspartate)
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作者 DANG Dong-Bin JIN Ya-Nan BAI Yan PAN Xiao-Jing WANG Jing-Ping 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第2期225-229,共5页
A dimeric chromium compound has been synthesized by hydrothermal method and characterized by IR, EPR spectra and TG-DTA technique. The title compound [Cr(aea)]2(OH)2 (aea = N-(2-aminoethyl)aspartate) crystalli... A dimeric chromium compound has been synthesized by hydrothermal method and characterized by IR, EPR spectra and TG-DTA technique. The title compound [Cr(aea)]2(OH)2 (aea = N-(2-aminoethyl)aspartate) crystallizes in monoclinic, space group P21/c with a = 8.9393(10), b = 6.7198(7), c = 14.6791(16) A, β = 91.0580(10)°, V= 881.63(17) A3, Z= 2, Mr = 486.34, De= 1.832 g/cm3, F(000) = 500,μ = 1.296 mm-1, R = 0.0271 and wR = 0.0756. Single-crystal X-ray structural analysis indicates that the title compound consists of two Cr(aea) units linked by two bridging hydroxyl groups. The geometry around each chromium center is approximately octahedral and completed by two hydroxyls and a quadridentate ligand which is formed when ethylenediamine reacts with maleic acid. 展开更多
关键词 chromium compound hydrothermal synthesis crystal structure
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The Effects of Oxidative Pretreatment of Zinc-containing Dust on Contents of Iron and Manganese in Ammoniacal Leaching Solution and Product ion of Zinc Oxide
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作者 王为振 陈启元 +2 位作者 胡慧萍 谭力铭 陈辉煌 《过程工程学报》 CAS CSCD 北大核心 2013年第1期67-72,共6页
The zinc-containing dust was oxidatively pretreated with calcium hypochlorite,subsequently leached with ammonia/ammonium bicarbonate solution to obtain the ammoniacal leaching solution,and zinc oxide was produced by a... The zinc-containing dust was oxidatively pretreated with calcium hypochlorite,subsequently leached with ammonia/ammonium bicarbonate solution to obtain the ammoniacal leaching solution,and zinc oxide was produced by ammonia distillation of the ammoniacal leaching solution and subsequent calcination. The elements of iron and manganese could not be detected in ammoniacal leaching solution,and the extraction rate of zinc was 98.2% in ammoniacal leaching process. The zinc oxide content in the product is 99.5%(ω),and the contents of iron and manganese in the product were 0.002 8‰ and 0.000 84‰(ω), respectively. The analyses of the valence states of iron and manganese in the zinc-containing dust with and without pretreatment were performed by chemical analysis and XPS,and the possible oxidation mechanism of the oxidative pretreatment of the dust was discussed. It is concluded that Fe 2+-oxide and Mn 2+-oxide in the dust were oxidized to Fe 3+-oxide and/or its hydrate and Mn 4+-oxide and/or its hydrate by calcium hypochlorite during the oxidative pretreatment process,respectively. 展开更多
关键词 zinc-containing dust oxidative pretreatment ammoniacal leaching zinc oxide calcium hypochlorite
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Recent advances in metal-organic frameworks for lithium metal anode protection 被引量:8
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作者 Ying Du Xing Gao +2 位作者 Siwu Li Lu Wang Bo Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第3期609-616,共8页
The lithium metal battery has been considered as a promising candidate for next generation batteries.However,safety concerns caused by uncontrollable lithium dendrite growth on lithium anode are severely hampering the... The lithium metal battery has been considered as a promising candidate for next generation batteries.However,safety concerns caused by uncontrollable lithium dendrite growth on lithium anode are severely hampering the commercial application.Metal-organic frameworks(MOFs)become one of the most attractive materials due to the high porosity,structural designability and tunability.With unique open channels and pores as well as functional components in MOFs,the transportation and deposition of lithium ions can be regulated,which leads to enhanced electrochemical prope rties.Various strategies for lithium metal protection are proposed in recent wo rks on applications of MOFs in lithium metal batteries.In this review,we highlight latest key approaches in this field and discuss the prospects for MOFs in advanced Li anodes. 展开更多
关键词 METAL-ORGANIC frameworks LI ANODE LITHIUM metal batteries LI DENDRITE PROTECTION
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Erratum to: hCLP46 increases Smad3 protein stability via inhibiting its ubiquitin-proteasomal degradation
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作者 Yingying Xing Qiaoyun Chu +3 位作者 Run Feng Wei Wang Lixin Liu Zhongbing Lu 《Protein & Cell》 SCIE CAS CSCD 2015年第12期929-929,共1页
In the original publication of the article, co-authors affiliations are appeared incorrectly. Correct affiliations are provided in this erratum.
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