The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was establishe...The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was established according to their spectroscopic analysis, such as FT-IR, NMR and mass spectroscopy. These new compounds were tested for their antiproliferative activities on seven representative human tumoral cell lines (Huh7 D12, Caco2, MDA-MB231, MDA-MB468, HCT116, PC3 and MCF7) and also on fibroblasts. Among them, only the compounds 6c showed micromolar cytotoxic activity on tumor cell lines (1.8 50 50 > 25 μM). Finally, in silico ADMET studies ware performed to investigate the possibility of using of the identified compound 6c as potential anti-tumor compound.展开更多
3D flower-like hierarchical mesoporous Bi_(4)O_(5)I_(2)/MoS_(2)Z-scheme layered heterojunction photocatalyst was fabricated by oil bath and hydrothermal methods.The heterojunction with narrow band gap of~1.95 eV exten...3D flower-like hierarchical mesoporous Bi_(4)O_(5)I_(2)/MoS_(2)Z-scheme layered heterojunction photocatalyst was fabricated by oil bath and hydrothermal methods.The heterojunction with narrow band gap of~1.95 eV extended the photoresponse to near-infrared region,which showed obvious photothermal effect due to the introduction of MoS_(2) with broad spectrum response.MoS_(2) nanosheets were anchored onto the surface of flower-like hierarchical mesoporous Bi_(4)O_(5)I_(2) nanosheets,thereby forming efficient layered heterojunctions,the solar-driven photocatalytic efficiency in degradation of highly toxic dichlorophenol and reduction of hexavalent chromium was improved to 98.5%and 99.2%,which was~4 and 7 times higher than that of the pristine Bi_(4)O_(5)I_(2),respectively.In addition,the photocatalytic hydrogen production rate reached 496.78 μmol h^(-1)g^(-1),which was~6 times higher than that of the pristine Bi_(4)O_(5)I_(2).The excellent photocatalytic performance can be ascribed to the promoted photothermal effect,as well as,the formation of compact Z-scheme layered heterojunctions.The 3D flower-like hierarchical mesoporous structure provided adequate surface active-sites,which was conducive to the mass transfer.Moreover,the high stability of the prepared photocatalyst further promoted its potential practical application.This strategy also provides new insights for fabricating layered Zscheme heterojunctions photocatalysts with highly photothermal-photocatalytic efficiency.展开更多
Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part i...Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part icles were characterized by powder X ray diffraction(XRD),thermal analysis(TGA DSC), infrared spectroscopy(FT IR),transmission electron microscopy(SEM) and scanning electron microscopy(TEM). The size distribution in whisker like and nanocrystalline materials arein the range of 10～50μm and 10～20nm respectively. The whisker MOS is metastable phase in MgSO4 NaOH H2O system at 140℃,whereas nanometer MOS is stable phase.展开更多
PhCH2)3Sn·(O2CC5H4N)·(H2O)]n was synthesized by the reaction of 4-pyridine car-boxylic acid with the tribenzyltin o xide and was characterized by IR,1 H NMR and MS.Its crystal structure was determined by X-r...PhCH2)3Sn·(O2CC5H4N)·(H2O)]n was synthesized by the reaction of 4-pyridine car-boxylic acid with the tribenzyltin o xide and was characterized by IR,1 H NMR and MS.Its crystal structure was determined by X-ray single crystal diffraction.The crystal belongs to monoclinic.The space group P21 /c with unit cell parameters a=1.2241(8)nm,b=0.9660(6)nm,c=2.3708(15)nm,β=102.722(12)°,V=2.734(3)nm3,Z =4,Dc=1.298g·cm-3 .In crystal,the tin atom rendered five-coordinate in a trigo nal bipyramidal structure which is b ridged by 4-pyridine carboxy-late into one-dimensional chain polymers.展开更多
The novel copper?complex with salicylaldehyde benzoylhydrazone and pyridine ligands, Cu(C14H10N2O2)(C5H5N), has been synthesized and characterized by elemental analysis, IR and thermal analysis. The crystal structure ...The novel copper?complex with salicylaldehyde benzoylhydrazone and pyridine ligands, Cu(C14H10N2O2)(C5H5N), has been synthesized and characterized by elemental analysis, IR and thermal analysis. The crystal structure of the title complex has been determined by single crystal X ray diffraction techniques. The crystal belongs to monoclinic with space group P21/c. The cell parameters are: a=1.6362(9)nm, b=1.7140(9)nm, c=1.2255(7)nm, β=105.168(9)°, V=3.317(3)nm3, Z=8, Dc=1.525g·cm-3, μ(MoKα)=1.334mm-1, F(000)=1560. The structure wasrefined to final R1=0.0376, wR2=0.0909. The copper?ion lies in a distorted square planar environment composed of two oxygen atoms, one nitrogen atom of tridentate acyhydrazone Schiff base ligand and one nitrogen atom of the pyridine ligand. CCDC: 193111.展开更多
The crystal structure of the compound was determined by X-ray single crystal diffraction. The crystal belongs to monoclinic system with space group P21/n, a=1.136 1(3)nm, b=0.709 8(2) nm, c=1.459 7(4) nm, β=107.538(4...The crystal structure of the compound was determined by X-ray single crystal diffraction. The crystal belongs to monoclinic system with space group P21/n, a=1.136 1(3)nm, b=0.709 8(2) nm, c=1.459 7(4) nm, β=107.538(4)°, V=1.122 4(6) nm3, Dc=1.858 g·cm-1, Z=4, F(000)=648, R1=0.0264, wR2=0.0665. CCDC: 224880.展开更多
Nanocrystalline MgSO\-4·5Mg（OH）\-2·3H\-2O were prepared by the hydrothermal reaction at 140 ℃ for 24 h. Nanoparticle samples were characterized by FTIR, TG, DSC, XRD and TEM. The size distribution of nano...Nanocrystalline MgSO\-4·5Mg（OH）\-2·3H\-2O were prepared by the hydrothermal reaction at 140 ℃ for 24 h. Nanoparticle samples were characterized by FTIR, TG, DSC, XRD and TEM. The size distribution of nanocrystalline is in the range of 10\20 nm, the mean size is 16 nm.展开更多
Two new Gd Ⅲ complexes with nitrilotriacetic acid(nta) and trans-1,2-cyclohexanediaminetetraacetic acid(Cydta) ligands were synthesized. Their crystal structures were determined by single-crystal X-ray structure anal...Two new Gd Ⅲ complexes with nitrilotriacetic acid(nta) and trans-1,2-cyclohexanediaminetetraacetic acid(Cydta) ligands were synthesized. Their crystal structures were determined by single-crystal X-ray structure analyses. The crystal data are as follows: K 3[Gd Ⅲ(nta) 2·(H 2O)]·6H 2O, monoclinic system, C2/c space group, a=1.534 81(15) nm, b=1.292 05(12) nm, c=2.610 8(3) nm, β=96.244(2)°, V=5.146 7(9) nm 3, Z=8, M=776.87, D c=2.005 g/cm 3, μ= 3.149 mm -1 and \{F(000)=\}3 080, R=0.024 5, wR=0.064 3 for 4 455 unique reflections and R= 0.028 9, wR=0.067 2 for all 10 305 reflections. The Gd ⅢN 2O 7 part in the [Gd Ⅲ(nta) 2(H 2O)] 3- anion is a pseudo-monocapped square antiprismatic nine-coordination structure.(NH 4)[Gd Ⅲ(Cydta)(H 2O) 2]·5H 2O, triclinic system, P1 space group, a=0.866 2(3) nm, b=1.006 7(3) nm, c= 1.444 8(5) nm, α= 88.282(5)°, β=75\^190(5)°, γ=88.317(4)°, V=1.217 2(7) nm 3, Z=2, M=643.69, D c=1.756 g/cm 3, μ=2.798 mm -1 and F(000)=650, R=0.030 3, wR=0.080 9 for 4 273 unique reflections and R=0.033 2, wR=0.082 5 for all 5 062 reflections. The Gd ⅢN 2O 6 part in the [Gd Ⅲ(Cydta)(H 2O) 2] - anion has a pseudo-square antiprismatic eight-coordination structure.展开更多
The solubilities of Cs 2 SO 4 -C 2 H 5 OH-H 2 O ternary system at 30℃and 50℃have been studied using microe-quipment for solubility determination.There appears two phases,alcoh olic phase,water phase in the liquid ph...The solubilities of Cs 2 SO 4 -C 2 H 5 OH-H 2 O ternary system at 30℃and 50℃have been studied using microe-quipment for solubility determination.There appears two phases,alcoh olic phase,water phase in the liquid phase.The solubilities of Cs 2 SO 4 in water,C 2 H 5 OH and mixed solvent have been determ ined.The phase diagram indicated that C 2 H 5 OH might be salted out by Cs 2 SO 4 from this system and the equilibrium solid phase is Cs 2 SO 4 .展开更多
The new mixed borates with formula(Rb 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O and Cs 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O)were prepared by reaction Rb (Cs )-borate aqueous solution with CaCl 2 .Two kinds of compounds w...The new mixed borates with formula(Rb 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O and Cs 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O)were prepared by reaction Rb (Cs )-borate aqueous solution with CaCl 2 .Two kinds of compounds were characterized by chemical analysis,X-ray powder dif fraction,FT-IR spectra and thermal analysis.展开更多
文摘The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was established according to their spectroscopic analysis, such as FT-IR, NMR and mass spectroscopy. These new compounds were tested for their antiproliferative activities on seven representative human tumoral cell lines (Huh7 D12, Caco2, MDA-MB231, MDA-MB468, HCT116, PC3 and MCF7) and also on fibroblasts. Among them, only the compounds 6c showed micromolar cytotoxic activity on tumor cell lines (1.8 50 50 > 25 μM). Finally, in silico ADMET studies ware performed to investigate the possibility of using of the identified compound 6c as potential anti-tumor compound.
基金support of this research by the National Natural Science Foundation of China(21871078)the Natural Science Foundation of Heilongjiang Province(JQ2019B001 and B2018010)+3 种基金the Heilongjiang Postdoctoral Startup Fund(LBH-Q14135)the Heilongjiang University Science Fund for Distinguished Young Scholars(JCL201802)the Heilongjiang Provincial Institutions of Higher Learning Basic Research Funds Basic Research Projects(KJCX201909)the Heilongjiang Touyan Innovation Team Program.
文摘3D flower-like hierarchical mesoporous Bi_(4)O_(5)I_(2)/MoS_(2)Z-scheme layered heterojunction photocatalyst was fabricated by oil bath and hydrothermal methods.The heterojunction with narrow band gap of~1.95 eV extended the photoresponse to near-infrared region,which showed obvious photothermal effect due to the introduction of MoS_(2) with broad spectrum response.MoS_(2) nanosheets were anchored onto the surface of flower-like hierarchical mesoporous Bi_(4)O_(5)I_(2) nanosheets,thereby forming efficient layered heterojunctions,the solar-driven photocatalytic efficiency in degradation of highly toxic dichlorophenol and reduction of hexavalent chromium was improved to 98.5%and 99.2%,which was~4 and 7 times higher than that of the pristine Bi_(4)O_(5)I_(2),respectively.In addition,the photocatalytic hydrogen production rate reached 496.78 μmol h^(-1)g^(-1),which was~6 times higher than that of the pristine Bi_(4)O_(5)I_(2).The excellent photocatalytic performance can be ascribed to the promoted photothermal effect,as well as,the formation of compact Z-scheme layered heterojunctions.The 3D flower-like hierarchical mesoporous structure provided adequate surface active-sites,which was conducive to the mass transfer.Moreover,the high stability of the prepared photocatalyst further promoted its potential practical application.This strategy also provides new insights for fabricating layered Zscheme heterojunctions photocatalysts with highly photothermal-photocatalytic efficiency.
文摘Both whisker and nanometer MgSO4·5Mg(OH)2·3H2O(MOS) were prepared by hydrothermal method at 140℃for different times, using NaOH and MgSO4·7H2O as raw materials. The MgSO4·5Mg(OH)2·3H2O part icles were characterized by powder X ray diffraction(XRD),thermal analysis(TGA DSC), infrared spectroscopy(FT IR),transmission electron microscopy(SEM) and scanning electron microscopy(TEM). The size distribution in whisker like and nanocrystalline materials arein the range of 10～50μm and 10～20nm respectively. The whisker MOS is metastable phase in MgSO4 NaOH H2O system at 140℃,whereas nanometer MOS is stable phase.
文摘PhCH2)3Sn·(O2CC5H4N)·(H2O)]n was synthesized by the reaction of 4-pyridine car-boxylic acid with the tribenzyltin o xide and was characterized by IR,1 H NMR and MS.Its crystal structure was determined by X-ray single crystal diffraction.The crystal belongs to monoclinic.The space group P21 /c with unit cell parameters a=1.2241(8)nm,b=0.9660(6)nm,c=2.3708(15)nm,β=102.722(12)°,V=2.734(3)nm3,Z =4,Dc=1.298g·cm-3 .In crystal,the tin atom rendered five-coordinate in a trigo nal bipyramidal structure which is b ridged by 4-pyridine carboxy-late into one-dimensional chain polymers.
文摘The novel copper?complex with salicylaldehyde benzoylhydrazone and pyridine ligands, Cu(C14H10N2O2)(C5H5N), has been synthesized and characterized by elemental analysis, IR and thermal analysis. The crystal structure of the title complex has been determined by single crystal X ray diffraction techniques. The crystal belongs to monoclinic with space group P21/c. The cell parameters are: a=1.6362(9)nm, b=1.7140(9)nm, c=1.2255(7)nm, β=105.168(9)°, V=3.317(3)nm3, Z=8, Dc=1.525g·cm-3, μ(MoKα)=1.334mm-1, F(000)=1560. The structure wasrefined to final R1=0.0376, wR2=0.0909. The copper?ion lies in a distorted square planar environment composed of two oxygen atoms, one nitrogen atom of tridentate acyhydrazone Schiff base ligand and one nitrogen atom of the pyridine ligand. CCDC: 193111.
文摘The crystal structure of the compound was determined by X-ray single crystal diffraction. The crystal belongs to monoclinic system with space group P21/n, a=1.136 1(3)nm, b=0.709 8(2) nm, c=1.459 7(4) nm, β=107.538(4)°, V=1.122 4(6) nm3, Dc=1.858 g·cm-1, Z=4, F(000)=648, R1=0.0264, wR2=0.0665. CCDC: 224880.
文摘Nanocrystalline MgSO\-4·5Mg（OH）\-2·3H\-2O were prepared by the hydrothermal reaction at 140 ℃ for 24 h. Nanoparticle samples were characterized by FTIR, TG, DSC, XRD and TEM. The size distribution of nanocrystalline is in the range of 10\20 nm, the mean size is 16 nm.
文摘Two new Gd Ⅲ complexes with nitrilotriacetic acid(nta) and trans-1,2-cyclohexanediaminetetraacetic acid(Cydta) ligands were synthesized. Their crystal structures were determined by single-crystal X-ray structure analyses. The crystal data are as follows: K 3[Gd Ⅲ(nta) 2·(H 2O)]·6H 2O, monoclinic system, C2/c space group, a=1.534 81(15) nm, b=1.292 05(12) nm, c=2.610 8(3) nm, β=96.244(2)°, V=5.146 7(9) nm 3, Z=8, M=776.87, D c=2.005 g/cm 3, μ= 3.149 mm -1 and \{F(000)=\}3 080, R=0.024 5, wR=0.064 3 for 4 455 unique reflections and R= 0.028 9, wR=0.067 2 for all 10 305 reflections. The Gd ⅢN 2O 7 part in the [Gd Ⅲ(nta) 2(H 2O)] 3- anion is a pseudo-monocapped square antiprismatic nine-coordination structure.(NH 4)[Gd Ⅲ(Cydta)(H 2O) 2]·5H 2O, triclinic system, P1 space group, a=0.866 2(3) nm, b=1.006 7(3) nm, c= 1.444 8(5) nm, α= 88.282(5)°, β=75\^190(5)°, γ=88.317(4)°, V=1.217 2(7) nm 3, Z=2, M=643.69, D c=1.756 g/cm 3, μ=2.798 mm -1 and F(000)=650, R=0.030 3, wR=0.080 9 for 4 273 unique reflections and R=0.033 2, wR=0.082 5 for all 5 062 reflections. The Gd ⅢN 2O 6 part in the [Gd Ⅲ(Cydta)(H 2O) 2] - anion has a pseudo-square antiprismatic eight-coordination structure.
文摘The solubilities of Cs 2 SO 4 -C 2 H 5 OH-H 2 O ternary system at 30℃and 50℃have been studied using microe-quipment for solubility determination.There appears two phases,alcoh olic phase,water phase in the liquid phase.The solubilities of Cs 2 SO 4 in water,C 2 H 5 OH and mixed solvent have been determ ined.The phase diagram indicated that C 2 H 5 OH might be salted out by Cs 2 SO 4 from this system and the equilibrium solid phase is Cs 2 SO 4 .
文摘The new mixed borates with formula(Rb 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O and Cs 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O)were prepared by reaction Rb (Cs )-borate aqueous solution with CaCl 2 .Two kinds of compounds were characterized by chemical analysis,X-ray powder dif fraction,FT-IR spectra and thermal analysis.
