The title compound [Cu（HSSA）（py）3H2O]n （H3SSA = 5-sulfosalicylic acid, py = pyridine） I has been synthesized and structurally determined by single-crystal X-ray diffraction. I was further characterized by elemen...The title compound [Cu（HSSA）（py）3H2O]n （H3SSA = 5-sulfosalicylic acid, py = pyridine） I has been synthesized and structurally determined by single-crystal X-ray diffraction. I was further characterized by elemental analyses, thermogravimetric analyses, IR and UV-visible spectroscopy. The crystal belongs to the monoclinic system, space group P21/c with a = 9.4564（10）, b = 18.2679（19）, c = 15.7284（12） A,β= 126.045（4）°, V= 2196.9（4）A^3, Z= 4, Dc = 1.618 g/cm^3, Mr = 535.02,μ = 1.141 mm^-1, F（000） = 1100, 2（MoKα） = 0.71073 A, the final R = 0.0429 and wR = 0.1044 for all observed reflections. In the structure, every two Cu（II） atoms are bridged by a bivalent 5-sulfosalicylic anion to form a 1D chain-like coordination polymer. Lattice waters between chains link them to form 2D layers which are further linked by C-H…O hydrogen bonds to form a three-dimensional supramolecular network.展开更多
This paper describes the potential of heterogeneous catalytic ozonization of sulfo-salicylic acid (SSal). It was found that catalytic ozonization in the presence of Mn-Zr-O (a modified manganese dioxide supported on ...This paper describes the potential of heterogeneous catalytic ozonization of sulfo-salicylic acid (SSal). It was found that catalytic ozonization in the presence of Mn-Zr-O (a modified manganese dioxide supported on silica gel) had significantly enhanced the removal rate (72%) of total organic carbon (TOC) compared with that of ozonization alone (19%). The efficient removal rate of TOC was probably due to increasing the adsorption ability of catalyst and accelerating decomposition of ozone to produce more powerful oxidants than ozone. .展开更多
Ammonium 5-sulfosalicylic acid monohydrate （NH4·C7H5O6S·H2O, ASSA） was synthesized and optical grade crystal with dimensions of 45ram × 20mm × 18mm was obtained from aqueous solution by the cooli...Ammonium 5-sulfosalicylic acid monohydrate （NH4·C7H5O6S·H2O, ASSA） was synthesized and optical grade crystal with dimensions of 45ram × 20mm × 18mm was obtained from aqueous solution by the cooling solution method. The crystal structure was confirmed by X-ray single-crystal diffraction method and the empirical composition is C7HIINO7S with formula weight 253.23. The crystal belongs to monoclinic space group P21/c with a = 1 1.884（9）, b = 7.306（5）, c = 12.152（9） A, β = 104.851（13）°, V= 1019.8（13） A3, Z = 4, Dc = 1.649 g/cm3,μ = 0.340 mm-1, F（000） =528, the final R= 0.0307 and wR= 0.0866 for 7494 observed reflections （I〉 2σ（I））, Elemental analysis, 1R and 1H-NMR spectrum were used to characterize the compound. Thermal analysis showed that one coordination water molecule was contained and dehydration temperature of ASSA crystal was 106℃. Optical transmission and fluorescence spectrum revealed that the ASSA crystal exhibited a strong absorption in ultraviolet region with the sharp absorption edge located at 340 nm and a significant blue fluorescent emission band at 442 nm.展开更多
Single and binary adsorption behaviors of salicylic acid and 5-sulfosalicylic acid onto hypercrosslinked polymeric adsorbents,i.e.NDA-101 and NDA-99 were investigated.The Freundlich model can successfully describe all...Single and binary adsorption behaviors of salicylic acid and 5-sulfosalicylic acid onto hypercrosslinked polymeric adsorbents,i.e.NDA-101 and NDA-99 were investigated.The Freundlich model can successfully describe all the adsorption isotherms tested,which indicates a favorable and exothermic adsorption process.The adsorption of salicylic acid relies on π-π interaction,while the electrostatic interaction further influences the adsorption of 5-sulfosalicylic acid onto NDA-99.The adsorptive capacity of salicylic acid on NDA-99 decreases but increases on NDA-101 with 5-sulfosalicylic acid as the background component in a binary solute system.The amount of 5-sulfosalicylic acid adsorbed was decreased with the increase in initial concentration of salicylic acid on both adsorbents.The competition for the adsorption sites is considered to be predominant in the solid-to-liquid interaction process.The adsorption selectivity of salicylic acid onto NDA-101 is higher than onto NDA-99 by more than an order of magnitude.Thus,combination technique involving NDA-101 followed by NDA-99 can be effectively applied to separate and recover salicylic acid and 5-sulfosalicylic acid from wastewater.展开更多
The complex Tb(SSA)·H 2O (1) and Tb 2.5 La (SSA) 3.5 ·7H 2O (2), TbY(SSA) 2·2H 2O (3), Tb 1.5 Gd(SSA) 2.5 ·4H 2O (4), TbGd 1.5 (SSA) 2.5 ·3H 2O (5), TbGd 2.5 ...The complex Tb(SSA)·H 2O (1) and Tb 2.5 La (SSA) 3.5 ·7H 2O (2), TbY(SSA) 2·2H 2O (3), Tb 1.5 Gd(SSA) 2.5 ·4H 2O (4), TbGd 1.5 (SSA) 2.5 ·3H 2O (5), TbGd 2.5 (SSA) 3.5 ·4H 2O (6), TbGd 3(SSA) 4·5H 2O (7), Tb 10.5 Cu 3(SSA) 12.5 ·30H 2O (8), (NH 4) 1.5 TbLa(SSA) 2.5 ·4H 2O (9), and (NH 4)Tb 2Cu(SSA) 3·6H 2O 10 (H 3SSA= sulfosalicylic acid ), were obtained by reacting ammonium sulfosalicylate with terbium chloride; or with the mixed solution of TbCl 3 and RECl 3 (or CuCl 2) (RE=La, Gd or Y). The compositions of these complexes and the fact that complexes 2～10 can be heteronuclear complexes or sosoloid from complexes and not usual mixture was confirmed by element analysis, IR, TGA and fluorescence analysis. Their luminescent properties were studied in a dimethyl sulfoxide(DMSO) solution (concentration: 1×10 -3 and 1×10 -4 mol·dm -3 ), and some infrequent results were obtained as follows: include, discovery of a synergistic effect between Tb 3+ and Cu 2+ in the 8; observation of the fluorescence quenching effect of NH 4 + in the 9 and 10; the fact that the fluorescence of the mixture of Tb(SSA) and Gd(SSA) (molar ratio 1∶1.5) is more intense than that of complex 1; and the influence of the DMSO on fluorescence enhances effect for the solutions of complexes in DMSO.展开更多
The fluorescence enhancement mechanism of Dy3＋-Gd3＋- SSA-CTMAB system was studied by the resonance light scattering and fluorescence spectrum. In this paper, the influencing factors including the concentration of Gd...The fluorescence enhancement mechanism of Dy3＋-Gd3＋- SSA-CTMAB system was studied by the resonance light scattering and fluorescence spectrum. In this paper, the influencing factors including the concentration of Gd3＋, ligands, pH value as well as surfactants were studied. As a result, the optimal experimental conditions were obtained. The existence of molecule congeries was proved by scattering-light spectrum.展开更多
Ⅰ. INTRODUCTIONThe coordination of H3SSA and metal ion in aqueous solution has been studied widely for a long time. S. B. Pirkes et al. prepared RE<sub>2</sub>（HSSA）<sub>3</sub>·nH<s...Ⅰ. INTRODUCTIONThe coordination of H3SSA and metal ion in aqueous solution has been studied widely for a long time. S. B. Pirkes et al. prepared RE<sub>2</sub>（HSSA）<sub>3</sub>·nH<sub>2</sub>O complexes (HSSA<sup>2-</sup>: negative divalent ion n=15—18 ) by reacting rare earth carbonate with H<sub>3</sub>SSA. N. S. Poluektov suggested that the coordination ratio of H<sub>3</sub>SSA to some rare earth in solvent is 1: 1. In this note, a synthetic method different from that in literature is used to prepare com-展开更多
Supramolecular assemblies of 2,2＇-biimidazole with 5-sulfosalicylic acid and 3,4,5-trihydroxybenzoic acid, have been synthesized and characterized by single-crystal X-ray diffraction methods. Both the two proton-tran...Supramolecular assemblies of 2,2＇-biimidazole with 5-sulfosalicylic acid and 3,4,5-trihydroxybenzoic acid, have been synthesized and characterized by single-crystal X-ray diffraction methods. Both the two proton-transfer compounds of 2,2＇-biimidazole with 3-carboxy-4-hydroxybenzenesulfonic acid （5-sulfosalicylic acid, 5-SSA） [namely bis（2-（2-1H-imidazolyl）-1H-imidazolium） 4-hydroxybenzene-3-carboxylate-1-sulfonate monohydrate, 2（C6HTN4）^＋· CTH4068^2-.H2O, （Ⅰ）] and 3,4,5-trihydroxybenzoic acid [namely 2,2＇-bi-1H-imidazolium bis（3,4,5-trihydroxybenzoate） tetrahydrate, C6H8N4^2＋ ·2（C7H5O5）^-·4（H20）, （Ⅱ）] feature extensively hydrogen-bonded three-dimensional network structures having significant interlayer n-n interactions between the cation and anion species. In Ⅰ, a 5-SSA^2- dianionic species results from deprotonation of both the sulfonic and the carboxylic acid groups, all available O-atom acceptors interact with all cation and water molecule donors by hydrogen bonds. In Ⅱ, the formula unit displays a crystallographic inversion symmetry. The structural information about the two complexes between 2,2＇-biimidazole compound and benzenecarboxylic acids obtained in this work will be particularly important for the rational design of supramolecular organic functional materials.展开更多
基金supported by the Project for Innovation Team of Liaoning Province (No. 2007T052)Liaoning Provincial Key Laboratory (No. 2008S104)Startup Project of Doctor of Liaoning University
文摘The title compound [Cu（HSSA）（py）3H2O]n （H3SSA = 5-sulfosalicylic acid, py = pyridine） I has been synthesized and structurally determined by single-crystal X-ray diffraction. I was further characterized by elemental analyses, thermogravimetric analyses, IR and UV-visible spectroscopy. The crystal belongs to the monoclinic system, space group P21/c with a = 9.4564（10）, b = 18.2679（19）, c = 15.7284（12） A,β= 126.045（4）°, V= 2196.9（4）A^3, Z= 4, Dc = 1.618 g/cm^3, Mr = 535.02,μ = 1.141 mm^-1, F（000） = 1100, 2（MoKα） = 0.71073 A, the final R = 0.0429 and wR = 0.1044 for all observed reflections. In the structure, every two Cu（II） atoms are bridged by a bivalent 5-sulfosalicylic anion to form a 1D chain-like coordination polymer. Lattice waters between chains link them to form 2D layers which are further linked by C-H…O hydrogen bonds to form a three-dimensional supramolecular network.
基金The project was supported by the National Natural Science Foundation of China(No.29877024)
文摘This paper describes the potential of heterogeneous catalytic ozonization of sulfo-salicylic acid (SSal). It was found that catalytic ozonization in the presence of Mn-Zr-O (a modified manganese dioxide supported on silica gel) had significantly enhanced the removal rate (72%) of total organic carbon (TOC) compared with that of ozonization alone (19%). The efficient removal rate of TOC was probably due to increasing the adsorption ability of catalyst and accelerating decomposition of ozone to produce more powerful oxidants than ozone. .
基金carried out under the sponsorship and financial support from the Key Laboratory of Optoelectronic Materials Chemistry and Physics,Chinese Academy of Sciences
文摘Ammonium 5-sulfosalicylic acid monohydrate （NH4·C7H5O6S·H2O, ASSA） was synthesized and optical grade crystal with dimensions of 45ram × 20mm × 18mm was obtained from aqueous solution by the cooling solution method. The crystal structure was confirmed by X-ray single-crystal diffraction method and the empirical composition is C7HIINO7S with formula weight 253.23. The crystal belongs to monoclinic space group P21/c with a = 1 1.884（9）, b = 7.306（5）, c = 12.152（9） A, β = 104.851（13）°, V= 1019.8（13） A3, Z = 4, Dc = 1.649 g/cm3,μ = 0.340 mm-1, F（000） =528, the final R= 0.0307 and wR= 0.0866 for 7494 observed reflections （I〉 2σ（I））, Elemental analysis, 1R and 1H-NMR spectrum were used to characterize the compound. Thermal analysis showed that one coordination water molecule was contained and dehydration temperature of ASSA crystal was 106℃. Optical transmission and fluorescence spectrum revealed that the ASSA crystal exhibited a strong absorption in ultraviolet region with the sharp absorption edge located at 340 nm and a significant blue fluorescent emission band at 442 nm.
基金This work was supported by the National Natural Science Foundation of China(No.20274017)
文摘Single and binary adsorption behaviors of salicylic acid and 5-sulfosalicylic acid onto hypercrosslinked polymeric adsorbents,i.e.NDA-101 and NDA-99 were investigated.The Freundlich model can successfully describe all the adsorption isotherms tested,which indicates a favorable and exothermic adsorption process.The adsorption of salicylic acid relies on π-π interaction,while the electrostatic interaction further influences the adsorption of 5-sulfosalicylic acid onto NDA-99.The adsorptive capacity of salicylic acid on NDA-99 decreases but increases on NDA-101 with 5-sulfosalicylic acid as the background component in a binary solute system.The amount of 5-sulfosalicylic acid adsorbed was decreased with the increase in initial concentration of salicylic acid on both adsorbents.The competition for the adsorption sites is considered to be predominant in the solid-to-liquid interaction process.The adsorption selectivity of salicylic acid onto NDA-101 is higher than onto NDA-99 by more than an order of magnitude.Thus,combination technique involving NDA-101 followed by NDA-99 can be effectively applied to separate and recover salicylic acid and 5-sulfosalicylic acid from wastewater.
文摘The complex Tb(SSA)·H 2O (1) and Tb 2.5 La (SSA) 3.5 ·7H 2O (2), TbY(SSA) 2·2H 2O (3), Tb 1.5 Gd(SSA) 2.5 ·4H 2O (4), TbGd 1.5 (SSA) 2.5 ·3H 2O (5), TbGd 2.5 (SSA) 3.5 ·4H 2O (6), TbGd 3(SSA) 4·5H 2O (7), Tb 10.5 Cu 3(SSA) 12.5 ·30H 2O (8), (NH 4) 1.5 TbLa(SSA) 2.5 ·4H 2O (9), and (NH 4)Tb 2Cu(SSA) 3·6H 2O 10 (H 3SSA= sulfosalicylic acid ), were obtained by reacting ammonium sulfosalicylate with terbium chloride; or with the mixed solution of TbCl 3 and RECl 3 (or CuCl 2) (RE=La, Gd or Y). The compositions of these complexes and the fact that complexes 2～10 can be heteronuclear complexes or sosoloid from complexes and not usual mixture was confirmed by element analysis, IR, TGA and fluorescence analysis. Their luminescent properties were studied in a dimethyl sulfoxide(DMSO) solution (concentration: 1×10 -3 and 1×10 -4 mol·dm -3 ), and some infrequent results were obtained as follows: include, discovery of a synergistic effect between Tb 3+ and Cu 2+ in the 8; observation of the fluorescence quenching effect of NH 4 + in the 9 and 10; the fact that the fluorescence of the mixture of Tb(SSA) and Gd(SSA) (molar ratio 1∶1.5) is more intense than that of complex 1; and the influence of the DMSO on fluorescence enhances effect for the solutions of complexes in DMSO.
基金Acknowledgement： The authors are thankful to the Natural Science Foundation of Shandong Province for its financial support （No. J06105） and the Youth Foundation of ghandong Agricultural University.
文摘The fluorescence enhancement mechanism of Dy3＋-Gd3＋- SSA-CTMAB system was studied by the resonance light scattering and fluorescence spectrum. In this paper, the influencing factors including the concentration of Gd3＋, ligands, pH value as well as surfactants were studied. As a result, the optimal experimental conditions were obtained. The existence of molecule congeries was proved by scattering-light spectrum.
基金Project supported by the National Natural Science Foundation of China.
文摘Ⅰ. INTRODUCTIONThe coordination of H3SSA and metal ion in aqueous solution has been studied widely for a long time. S. B. Pirkes et al. prepared RE<sub>2</sub>（HSSA）<sub>3</sub>·nH<sub>2</sub>O complexes (HSSA<sup>2-</sup>: negative divalent ion n=15—18 ) by reacting rare earth carbonate with H<sub>3</sub>SSA. N. S. Poluektov suggested that the coordination ratio of H<sub>3</sub>SSA to some rare earth in solvent is 1: 1. In this note, a synthetic method different from that in literature is used to prepare com-
基金Project supported by the National Natural Science Foundation of China （No. 30470408） and the Shanxi Provincial Natural Science Foundation for Youth （No. 20041032）.
文摘Supramolecular assemblies of 2,2＇-biimidazole with 5-sulfosalicylic acid and 3,4,5-trihydroxybenzoic acid, have been synthesized and characterized by single-crystal X-ray diffraction methods. Both the two proton-transfer compounds of 2,2＇-biimidazole with 3-carboxy-4-hydroxybenzenesulfonic acid （5-sulfosalicylic acid, 5-SSA） [namely bis（2-（2-1H-imidazolyl）-1H-imidazolium） 4-hydroxybenzene-3-carboxylate-1-sulfonate monohydrate, 2（C6HTN4）^＋· CTH4068^2-.H2O, （Ⅰ）] and 3,4,5-trihydroxybenzoic acid [namely 2,2＇-bi-1H-imidazolium bis（3,4,5-trihydroxybenzoate） tetrahydrate, C6H8N4^2＋ ·2（C7H5O5）^-·4（H20）, （Ⅱ）] feature extensively hydrogen-bonded three-dimensional network structures having significant interlayer n-n interactions between the cation and anion species. In Ⅰ, a 5-SSA^2- dianionic species results from deprotonation of both the sulfonic and the carboxylic acid groups, all available O-atom acceptors interact with all cation and water molecule donors by hydrogen bonds. In Ⅱ, the formula unit displays a crystallographic inversion symmetry. The structural information about the two complexes between 2,2＇-biimidazole compound and benzenecarboxylic acids obtained in this work will be particularly important for the rational design of supramolecular organic functional materials.
