A mononuclear manganese complex [Mn(2,2′-bipy)(H2O)4]·(m-phth) (2,2′-bipy=2,2′-bipyridine, m-phth=isophthalate) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crys...A mononuclear manganese complex [Mn(2,2′-bipy)(H2O)4]·(m-phth) (2,2′-bipy=2,2′-bipyridine, m-phth=isophthalate) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crystal X-ray diffraction. The crystal is of orthorhombic, space group Pnna with a=0.766 8(8) nm, b=2.050 2(2) nm, c=1.247 0(13) nm, V=1.960 4(4) nm3, Z=4, Mr=447.30, Dc=1.376 g·cm-3, μ=0.722 mm-1, F(000)=924, Rint=0.027 0, R=0.028 0 and wR=0.075 5. In the crystal the manganese atom is six-coordinated by two nitrogen atoms from 2,2′-bipyradine and four oxygen atoms from water molecules, completing an octahedral coordination geometry. The isophthalate molecules are included in the lattice and connected to Mn(2,2′-bipy)(H2O)4 by hydrogen bonding interactions to form a three-dimensional supramolecular structure. CCDC:286965.展开更多
The title compound, [Mn(2,4,6-TMBA)2(H2O)3]n·2nH2O (1), where 2,4,6-TMBA=2,4,6-trimethylbenzoic acid, was synthesized and its crystal structure was determined by X-ray diffraction analysis. The crystal is of mono...The title compound, [Mn(2,4,6-TMBA)2(H2O)3]n·2nH2O (1), where 2,4,6-TMBA=2,4,6-trimethylbenzoic acid, was synthesized and its crystal structure was determined by X-ray diffraction analysis. The crystal is of monoclinic, space group C2/c with a=2.929 9(6) nm, b=1.036 4(2) nm, c=8.222 04(17) nm, V=2.494 7(9) nm3, Z=4, M=471.40, Dc=1.255 g·cm-3, μ=0.571 mm-1, F(000)=996, Rint=0.029 4, R=0.037 6 and wR=0.094 9. The Mn atoms are octahedrally coordinated by two O atoms of two ligands and four O atoms of water. The carboxyl group coordinates to Mn(Ⅱ)in the mode of monodentate, while the O atoms of water molecules coordinates in bridging mode. The complex shows a one-dimensional chain structure bridged by water molecules. CCDC: 297750.展开更多
A novel manganese coordination polymer [Mn(FA)2(4,4′-bipy)]n (HFA=2-furancarboxylic acid, 4,4′-bipy=4,4′-bipyridine) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crys...A novel manganese coordination polymer [Mn(FA)2(4,4′-bipy)]n (HFA=2-furancarboxylic acid, 4,4′-bipy=4,4′-bipyridine) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group C2/c with a=1.698 4(3) nm, b=1.168 6(2) nm, c=1.009 5(17) nm, β=109.455(11)°, V=1.889 2(6) nm3, Z=4, Dc=1.523 g·cm-3, Mr=433.27, F(000)=884, μ=0.740 mm-1, R1=0.028 2 and wR2=0.071 0. In the crystal, the manganese atom is six-coordinated by two nitrogen atoms from 4,4′-bipyridine and four oxygen atoms from furancarboxylic acid molecules, completing an octahedral geometry. The 4,4′-bipyridine molecules are connected to the infinite chain [Mn(FA)2]n to form a two-dimensional layer. The quantum chemistry calculation on the title complex has been performed by means of G98W package and taking Lanl2dz basis set. CCDC: 296763.展开更多
A novel manganese（Ⅱ） coordination polymer [Mn（L^1）2（H2O）]·2H2O （HL^1 = 2,6- dichlorobenzoic acid） 1 has been synthesized and structurally characterized. X-ray diffraction analyses reveal that 1 is a one-...A novel manganese（Ⅱ） coordination polymer [Mn（L^1）2（H2O）]·2H2O （HL^1 = 2,6- dichlorobenzoic acid） 1 has been synthesized and structurally characterized. X-ray diffraction analyses reveal that 1 is a one-dimensional chain structure bridged by water molecules and 2,6- dichlorobenzoic acid. The crystal is of monoclinic, space group P21/c with α = 12.9701（19）, b = 20.592（3）, c = 7.3759（10） A, β = 102.660（2）°, V = 1.9221（5）. nm^3, Z = 4, C14H12Cl4MnO7, Mr= 488.98, Dc= 1.690 g/cm^3, p = 1.275 mm^-1, F（000） = 980, Rint = 0.0348, R = 0.0350, and wR = 0.0755. In the crystal the manganese atom is six-coordinated by two oxygen atoms from water and four oxygen atoms from four 2,6-dichlorobenzolate molecules, completing an octahedral geometry.展开更多
Based on the state-of-the-art studies of solar-soil source heat pump compound system, operation patterns of solar-soil compound system were analyzed, particularly the advantages of parallel operation pattern. It is fo...Based on the state-of-the-art studies of solar-soil source heat pump compound system, operation patterns of solar-soil compound system were analyzed, particularly the advantages of parallel operation pattern. It is found that parallel operation pattern is better for solar-soil compound system. Furthermore, the heat balance issue of solar-soil compound system was emphatically analyzed from four aspects, which were annual analysis of heating and cooling load, the heat exchange of ground heat exchanger, capacity determination of solar-assisted heat sottrce and heat balance calculation of solar-soil compound system. Moreover, annual rate of heat balance in a solar-soil source heat pump compound system was calculated with a case study. It is shown that the annual heat unbalance ratio is 19%, which is less than 20%. As a result, the practical solar-soil compound system can basically maintain the heat balance of soil.展开更多
A novel complex Zn（phen）（m-CBA）2（H2O） with m-chlorobenzoic acid （m-CBA）, 1,10-phenanthroline （phen） and zinc chloride has been hydrothermally synthesized and characterized. Crystal data for this complex： tr...A novel complex Zn（phen）（m-CBA）2（H2O） with m-chlorobenzoic acid （m-CBA）, 1,10-phenanthroline （phen） and zinc chloride has been hydrothermally synthesized and characterized. Crystal data for this complex： triclinic, space group P1^-, a = 0.8361（5）, b = 1.2455（7）, c = 1.3107（7） nm, α = 115.637（8）, β = 91.014（9）, γ = 104.857（8）°, V = 1.1763（11） nm^3, Dc = 1.623 g/cm^3, Z = 2, F（000） = 584, GOOF = 1.078, the final R = 0.0453 and wR = 0.1192. Structure analysis shows that the zinc ion coordinates with two nitrogen atoms of one 1,10-phenanthroline molecule, three oxygen atoms from two m-chlorobenzoic acid molecules and one water molecule, giving a distorted square-pyramidal coordination geometry. The cyclic voltametric behavior of the complex was also investigated.展开更多
文摘A mononuclear manganese complex [Mn(2,2′-bipy)(H2O)4]·(m-phth) (2,2′-bipy=2,2′-bipyridine, m-phth=isophthalate) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crystal X-ray diffraction. The crystal is of orthorhombic, space group Pnna with a=0.766 8(8) nm, b=2.050 2(2) nm, c=1.247 0(13) nm, V=1.960 4(4) nm3, Z=4, Mr=447.30, Dc=1.376 g·cm-3, μ=0.722 mm-1, F(000)=924, Rint=0.027 0, R=0.028 0 and wR=0.075 5. In the crystal the manganese atom is six-coordinated by two nitrogen atoms from 2,2′-bipyradine and four oxygen atoms from water molecules, completing an octahedral coordination geometry. The isophthalate molecules are included in the lattice and connected to Mn(2,2′-bipy)(H2O)4 by hydrogen bonding interactions to form a three-dimensional supramolecular structure. CCDC:286965.
文摘The title compound, [Mn(2,4,6-TMBA)2(H2O)3]n·2nH2O (1), where 2,4,6-TMBA=2,4,6-trimethylbenzoic acid, was synthesized and its crystal structure was determined by X-ray diffraction analysis. The crystal is of monoclinic, space group C2/c with a=2.929 9(6) nm, b=1.036 4(2) nm, c=8.222 04(17) nm, V=2.494 7(9) nm3, Z=4, M=471.40, Dc=1.255 g·cm-3, μ=0.571 mm-1, F(000)=996, Rint=0.029 4, R=0.037 6 and wR=0.094 9. The Mn atoms are octahedrally coordinated by two O atoms of two ligands and four O atoms of water. The carboxyl group coordinates to Mn(Ⅱ)in the mode of monodentate, while the O atoms of water molecules coordinates in bridging mode. The complex shows a one-dimensional chain structure bridged by water molecules. CCDC: 297750.
文摘A novel manganese coordination polymer [Mn(FA)2(4,4′-bipy)]n (HFA=2-furancarboxylic acid, 4,4′-bipy=4,4′-bipyridine) has been synthesized by hydrothermal methods. The crystal structure was determined by single-crystal X-ray diffraction. The crystal is of monoclinic, space group C2/c with a=1.698 4(3) nm, b=1.168 6(2) nm, c=1.009 5(17) nm, β=109.455(11)°, V=1.889 2(6) nm3, Z=4, Dc=1.523 g·cm-3, Mr=433.27, F(000)=884, μ=0.740 mm-1, R1=0.028 2 and wR2=0.071 0. In the crystal, the manganese atom is six-coordinated by two nitrogen atoms from 4,4′-bipyridine and four oxygen atoms from furancarboxylic acid molecules, completing an octahedral geometry. The 4,4′-bipyridine molecules are connected to the infinite chain [Mn(FA)2]n to form a two-dimensional layer. The quantum chemistry calculation on the title complex has been performed by means of G98W package and taking Lanl2dz basis set. CCDC: 296763.
基金This work was supported by the Basic Research of Hunan Province (03JZY3036),Science Foundation of Hengyang Normal University of China (2006A15) and Foundation of the Eleventh Five-year Key Constructing Discipline of Hunan Province
文摘A novel manganese（Ⅱ） coordination polymer [Mn（L^1）2（H2O）]·2H2O （HL^1 = 2,6- dichlorobenzoic acid） 1 has been synthesized and structurally characterized. X-ray diffraction analyses reveal that 1 is a one-dimensional chain structure bridged by water molecules and 2,6- dichlorobenzoic acid. The crystal is of monoclinic, space group P21/c with α = 12.9701（19）, b = 20.592（3）, c = 7.3759（10） A, β = 102.660（2）°, V = 1.9221（5）. nm^3, Z = 4, C14H12Cl4MnO7, Mr= 488.98, Dc= 1.690 g/cm^3, p = 1.275 mm^-1, F（000） = 980, Rint = 0.0348, R = 0.0350, and wR = 0.0755. In the crystal the manganese atom is six-coordinated by two oxygen atoms from water and four oxygen atoms from four 2,6-dichlorobenzolate molecules, completing an octahedral geometry.
基金Project(50838009) supported by the National Natural Science Foundation of ChinaProject(2010DFA72740-05) supported by the International Science & Technology Cooperation Program of China
文摘Based on the state-of-the-art studies of solar-soil source heat pump compound system, operation patterns of solar-soil compound system were analyzed, particularly the advantages of parallel operation pattern. It is found that parallel operation pattern is better for solar-soil compound system. Furthermore, the heat balance issue of solar-soil compound system was emphatically analyzed from four aspects, which were annual analysis of heating and cooling load, the heat exchange of ground heat exchanger, capacity determination of solar-assisted heat sottrce and heat balance calculation of solar-soil compound system. Moreover, annual rate of heat balance in a solar-soil source heat pump compound system was calculated with a case study. It is shown that the annual heat unbalance ratio is 19%, which is less than 20%. As a result, the practical solar-soil compound system can basically maintain the heat balance of soil.
基金Project supported by the Foundation of Education Committee of Hunan Province (06C187)the Research Award Fund for Outstanding Young Teachers of Hengyang Normal University (2006)
文摘A novel complex Zn（phen）（m-CBA）2（H2O） with m-chlorobenzoic acid （m-CBA）, 1,10-phenanthroline （phen） and zinc chloride has been hydrothermally synthesized and characterized. Crystal data for this complex： triclinic, space group P1^-, a = 0.8361（5）, b = 1.2455（7）, c = 1.3107（7） nm, α = 115.637（8）, β = 91.014（9）, γ = 104.857（8）°, V = 1.1763（11） nm^3, Dc = 1.623 g/cm^3, Z = 2, F（000） = 584, GOOF = 1.078, the final R = 0.0453 and wR = 0.1192. Structure analysis shows that the zinc ion coordinates with two nitrogen atoms of one 1,10-phenanthroline molecule, three oxygen atoms from two m-chlorobenzoic acid molecules and one water molecule, giving a distorted square-pyramidal coordination geometry. The cyclic voltametric behavior of the complex was also investigated.
