With dimethylamine as a template, a new one-dimensional zincophosphite （C2H8N）·[Zn（HPO3）（H2PO3）] was prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FTIR spectr...With dimethylamine as a template, a new one-dimensional zincophosphite （C2H8N）·[Zn（HPO3）（H2PO3）] was prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FTIR spectrametry, elemental analysis, powder X-ray diffraction, and thermogravimetric analysis. The compound crystallized in the Monoclinic space group P2（1）/c, with cell parameters, a=0.78410（9） nm, b=1.54744（2） nm, c=0.81418（1） nm, β=105.8150（1）°, V=0.95049（2） nm3 and Z=4. The connectivity of the ZnO4 tetrahedron and HPO3 pseudo pyramid resulted in inifinite corner-sharing 4-membered ring chains, which were further linked by the protonated amine molecules to form a 3D structure via hydrogen bonds. To the best of our knowledge, this is the first existence of a zincophosphite with the anionic framework composition of [Zn（HPO3）（H2PO3）]-. The compound exhibits intense photoluminescence at room temperature.展开更多
A novel organic-inorganic hybrid compound {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} hasbeen hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction.The compound crystallizes in the ortho...A novel organic-inorganic hybrid compound {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} hasbeen hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction.The compound crystallizes in the orthorhombic space group, Pna2_1, with a = 2.4164(5), b =1.8281(4), c = 1.1877(2) nm, V = 5.247(2) nm^3, Z = 4, and final R_1 = 0.0331, wR_2 = 0.0727. Thestructure consists of discrete {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} clusters, constructed from aβ-octamolybdate subunit [Mo_8O_(26)]^(4-) covalently bonded to two [Cu(2,2'-bpy)_2]^(2+)coordination complex cations via bridging oxo groups. In addition, the spectroscopic properties andthermal behavior of this compound have been investigated by spectroscopic techniques (UV-vis, IR,Raman and EPR spectra) and TG analysis.展开更多
Two-dimensional polymers(2DPs)are emerging crystalline 2D organic material comprising free-standing,single-atom/monomer-thick,planar,and covalent networks with long-ranging structural order.Benefiting from their intri...Two-dimensional polymers(2DPs)are emerging crystalline 2D organic material comprising free-standing,single-atom/monomer-thick,planar,and covalent networks with long-ranging structural order.Benefiting from their intrinsic porosity,crystallinity,and electrical properties,2DPs have displayed great potential for separation,energy conversion and electronic fields.In this mini review,we aim to provide the recent progress in crystalline 2DPs films form synthesis strategies to characterization methods,as well as the future trends.We first present the synthesis strategy of single-crystalline 2DPs films including crystal engineering approaches and surface science.Also,we summarize the characterization methods of 2DPs films and highlight the advantages and limitations of different methods focusing on chemical bonding,morphology,and crystal structure.Finally,we will present the current challenges and trends regarding the future developments of crystallinity,monomer design,synthesis strategy and characterization.展开更多
A new technical approach to the synthesis of novel silicon containing polyurethane by the non carbothermal method directly from SiO 2 was studied.Firstly a high reactive pentacoordinate organic silicon complex[(KSi(OC...A new technical approach to the synthesis of novel silicon containing polyurethane by the non carbothermal method directly from SiO 2 was studied.Firstly a high reactive pentacoordinate organic silicon complex[(KSi(OCH 2CH 2O) 2(OCH 2CH 2OH)]was prepared,by means of the reaction of a high surface area silica with ethylene glycol and potassium hydroxide.Then a novel tetracoordinate silicon (OCH 2CH 2O)Si(OCH 2CH 2OH)(OCH 2CH 2OCH 2CH 2OH)was synthesized by the reaction of ClCH 2CH 2OH with reactive pentacoordinate silicon complex.Lastly a novel silicon containing polyurethane was synthesized by low temperature solution condensation between tetracoordinate silicon and 2,4 toluene diisocyanate in dimethyl sulfoxide.The product was characterized and analyzed by FTIR,TG,DSC,GPC etc. The IR spectra exhibited a characteristic strong absorption band for ester carbonyl at 1724 05cm -1 .TG analysis showed a better thermal stability.DSC curves declared that its T g was 115 09℃,GPC analysis showed that the molecular weight of silicon containing polyurethane is between several ten thousand and a hundred thousand.展开更多
A high reactive pentacoordinate organic silicon complex was at first prepared by reaction of natural silica with ethylene glycol and potassium hydroxide. Then a novel tetracoordinate silicon was synthesized by reactin...A high reactive pentacoordinate organic silicon complex was at first prepared by reaction of natural silica with ethylene glycol and potassium hydroxide. Then a novel tetracoordinate silicon was synthesized by reacting the pentacoordinate silicon with HCl. The product was characterized and analyzed by FTIR, NMR and TG/DTG.展开更多
基金Supported by the National Natural Science Foundation of China(Nos20701023 and 20971076)the Fund of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry(China)(No2010-17)
文摘With dimethylamine as a template, a new one-dimensional zincophosphite （C2H8N）·[Zn（HPO3）（H2PO3）] was prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FTIR spectrametry, elemental analysis, powder X-ray diffraction, and thermogravimetric analysis. The compound crystallized in the Monoclinic space group P2（1）/c, with cell parameters, a=0.78410（9） nm, b=1.54744（2） nm, c=0.81418（1） nm, β=105.8150（1）°, V=0.95049（2） nm3 and Z=4. The connectivity of the ZnO4 tetrahedron and HPO3 pseudo pyramid resulted in inifinite corner-sharing 4-membered ring chains, which were further linked by the protonated amine molecules to form a 3D structure via hydrogen bonds. To the best of our knowledge, this is the first existence of a zincophosphite with the anionic framework composition of [Zn（HPO3）（H2PO3）]-. The compound exhibits intense photoluminescence at room temperature.
基金theNationalNaturalScienceFoundationofChina (No .2 0 0 710 0 7)andtheFoundationforUniversityKeyTeacherbytheMinistryofEducationofChina
文摘A novel organic-inorganic hybrid compound {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} hasbeen hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction.The compound crystallizes in the orthorhombic space group, Pna2_1, with a = 2.4164(5), b =1.8281(4), c = 1.1877(2) nm, V = 5.247(2) nm^3, Z = 4, and final R_1 = 0.0331, wR_2 = 0.0727. Thestructure consists of discrete {[Cu(2,2'-bpy)_2]_2Mo_8O_(26)} clusters, constructed from aβ-octamolybdate subunit [Mo_8O_(26)]^(4-) covalently bonded to two [Cu(2,2'-bpy)_2]^(2+)coordination complex cations via bridging oxo groups. In addition, the spectroscopic properties andthermal behavior of this compound have been investigated by spectroscopic techniques (UV-vis, IR,Raman and EPR spectra) and TG analysis.
基金supported by the Zhejiang Provincial Natural Science Foundation of China(No.LR21E030001).
文摘Two-dimensional polymers(2DPs)are emerging crystalline 2D organic material comprising free-standing,single-atom/monomer-thick,planar,and covalent networks with long-ranging structural order.Benefiting from their intrinsic porosity,crystallinity,and electrical properties,2DPs have displayed great potential for separation,energy conversion and electronic fields.In this mini review,we aim to provide the recent progress in crystalline 2DPs films form synthesis strategies to characterization methods,as well as the future trends.We first present the synthesis strategy of single-crystalline 2DPs films including crystal engineering approaches and surface science.Also,we summarize the characterization methods of 2DPs films and highlight the advantages and limitations of different methods focusing on chemical bonding,morphology,and crystal structure.Finally,we will present the current challenges and trends regarding the future developments of crystallinity,monomer design,synthesis strategy and characterization.
文摘A new technical approach to the synthesis of novel silicon containing polyurethane by the non carbothermal method directly from SiO 2 was studied.Firstly a high reactive pentacoordinate organic silicon complex[(KSi(OCH 2CH 2O) 2(OCH 2CH 2OH)]was prepared,by means of the reaction of a high surface area silica with ethylene glycol and potassium hydroxide.Then a novel tetracoordinate silicon (OCH 2CH 2O)Si(OCH 2CH 2OH)(OCH 2CH 2OCH 2CH 2OH)was synthesized by the reaction of ClCH 2CH 2OH with reactive pentacoordinate silicon complex.Lastly a novel silicon containing polyurethane was synthesized by low temperature solution condensation between tetracoordinate silicon and 2,4 toluene diisocyanate in dimethyl sulfoxide.The product was characterized and analyzed by FTIR,TG,DSC,GPC etc. The IR spectra exhibited a characteristic strong absorption band for ester carbonyl at 1724 05cm -1 .TG analysis showed a better thermal stability.DSC curves declared that its T g was 115 09℃,GPC analysis showed that the molecular weight of silicon containing polyurethane is between several ten thousand and a hundred thousand.
文摘A high reactive pentacoordinate organic silicon complex was at first prepared by reaction of natural silica with ethylene glycol and potassium hydroxide. Then a novel tetracoordinate silicon was synthesized by reacting the pentacoordinate silicon with HCl. The product was characterized and analyzed by FTIR, NMR and TG/DTG.
