The assembly of metal ions Zn2＋, Co2＋ and H2E2Ge2O3 ligand under mild hydro- thermal conditions leads to a mixed 3D transition zinc-cobalt-organogermanate framework, Zn0.88Co0.12（E2Ge2O3） （1, E = -CH2CH2COO-）. T...The assembly of metal ions Zn2＋, Co2＋ and H2E2Ge2O3 ligand under mild hydro- thermal conditions leads to a mixed 3D transition zinc-cobalt-organogermanate framework, Zn0.88Co0.12（E2Ge2O3） （1, E = -CH2CH2COO-）. The structure was determined by single-crystal X-ray diffraction and further characterized by IR spectroscopy, elemental analysis, energy- dispersive X-ray analysis, inductively coupled plasma, powder X-ray diffraction, thermogra- vimetric analysis and fluorescence spectroscopy. Compound 1 crystallizes in the chiral space group P212121, with a = 4.9096（5）, b = 8.9031（11）, c = 24.046（3） A, V = 1051.0（2） A3, C6H8Ge2O7Zn0.88Co0.12, Mr = 401.88, Z = 4, Dc = 2.540 g.cm-1,μ = 7.875 mm-1, F（000） = 775, GOF= 1.016, the final R = 0.0324 and wR = 0.0642. The structure ofl is built up by Ge-O sheets with Ge6 rings and Zn/Co-carboxyl layers. It should be mentioned that although the whole E2Ge2O32- ligand exhibits only one kind of coordination mode, it plays two roles in forming the structure： SBU and linker. In this situation, the E group of H2E2Ge2O3 ligand becomes a determining factor for structural dimensionality. In addition, it displays blue-violet emission light and shows high thermostability.展开更多
A new borate [H2EG][B7O10（OH）3] （1） based on [B14O20（OH）6]4- polyborate anions has been solvothermally synthesized in the presence of H2EG as a template （EG = ethylene glycol）. The structure was determined by ...A new borate [H2EG][B7O10（OH）3] （1） based on [B14O20（OH）6]4- polyborate anions has been solvothermally synthesized in the presence of H2EG as a template （EG = ethylene glycol）. The structure was determined by single-crystal X-ray diffraction and further characterized by FFIR, elemental analysis and thermogravimetric analysis. Compound 1 crystallizes in the triclinic system, space group Pi, with a = 8.5095（4）, b = 8.8694（4）, c = 10.0756（4） A, a = 95.094（2）, β = 96.936（2）, γ = 116.844（2）°, V = 664.66（5） A3. The structure of 1 consists of [B14O20（OH）6]4- moiety, which could be regarded as the largest isolated polyborate anion so far. The anions are interlinked via hydrogen bonding to form a 3D supramolecular network, whereas the diprotonated [H2EG]2＋ are filled in the free space of inorganic borate network and interact with the inorganic framework by extensive hydrogen bonds. It is noteworthy that the EG acts not only as a solvent, but also as a template.展开更多
基金supported by the Natural Science Fund for Young Scholars of Fujian Province(No. 2011J05018)the Fund for Young Scholars from Fujian Agriculture and Forestry University (No. 2011xjj06)
文摘The assembly of metal ions Zn2＋, Co2＋ and H2E2Ge2O3 ligand under mild hydro- thermal conditions leads to a mixed 3D transition zinc-cobalt-organogermanate framework, Zn0.88Co0.12（E2Ge2O3） （1, E = -CH2CH2COO-）. The structure was determined by single-crystal X-ray diffraction and further characterized by IR spectroscopy, elemental analysis, energy- dispersive X-ray analysis, inductively coupled plasma, powder X-ray diffraction, thermogra- vimetric analysis and fluorescence spectroscopy. Compound 1 crystallizes in the chiral space group P212121, with a = 4.9096（5）, b = 8.9031（11）, c = 24.046（3） A, V = 1051.0（2） A3, C6H8Ge2O7Zn0.88Co0.12, Mr = 401.88, Z = 4, Dc = 2.540 g.cm-1,μ = 7.875 mm-1, F（000） = 775, GOF= 1.016, the final R = 0.0324 and wR = 0.0642. The structure ofl is built up by Ge-O sheets with Ge6 rings and Zn/Co-carboxyl layers. It should be mentioned that although the whole E2Ge2O32- ligand exhibits only one kind of coordination mode, it plays two roles in forming the structure： SBU and linker. In this situation, the E group of H2E2Ge2O3 ligand becomes a determining factor for structural dimensionality. In addition, it displays blue-violet emission light and shows high thermostability.
基金Supported by the NNSFC (Nos. 50872133 and 20821061)the National Natural Science Fund for Distinguished Young Scholars of China (No. 20725101)+2 种基金the 973 Program (No. 2006CB932904)the NSF of Fujian Province (No. E0510030)the Key Project from FJIRSM (No.SZD07001)
文摘A new borate [H2EG][B7O10（OH）3] （1） based on [B14O20（OH）6]4- polyborate anions has been solvothermally synthesized in the presence of H2EG as a template （EG = ethylene glycol）. The structure was determined by single-crystal X-ray diffraction and further characterized by FFIR, elemental analysis and thermogravimetric analysis. Compound 1 crystallizes in the triclinic system, space group Pi, with a = 8.5095（4）, b = 8.8694（4）, c = 10.0756（4） A, a = 95.094（2）, β = 96.936（2）, γ = 116.844（2）°, V = 664.66（5） A3. The structure of 1 consists of [B14O20（OH）6]4- moiety, which could be regarded as the largest isolated polyborate anion so far. The anions are interlinked via hydrogen bonding to form a 3D supramolecular network, whereas the diprotonated [H2EG]2＋ are filled in the free space of inorganic borate network and interact with the inorganic framework by extensive hydrogen bonds. It is noteworthy that the EG acts not only as a solvent, but also as a template.
