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通过水热反应合成了一种新颖的稀土2-羟基烟酸的配合物{[LaL(HL)(H2O)3]1/3(SO4)2/3(H3O)2H2O}(H2L=2-hydroxynicotinic acid)。X-ray单晶衍射分析可知,2-羟基烟酸通过羧基O和羟基O原子桥连La离子,形成二维层状结构,层与层之间通过弱作用力拓展为三维结构。二维相关光谱分析表明N—H面外弯曲振动和C—H面外弯曲振动对磁微扰比较敏感,这可能是吡啶环上π电子云在磁微扰下变形引起C—H和N—H面外弯曲振动的响应,SO24-的ν4振动和羧基不对称伸缩振动对磁微扰也比较敏感;热微扰下N—H伸缩振动比较敏感。此外还对化合物进行了紫外和热重分析。 相似文献
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Indium(I) heptachlorodigallate(III), InGa2Cl7, has been obtained from a mixture of In, Bi and GaCl3 in a melt of [bmim][Al(nftb)4] under argon at 373 K. The crystal structure of InGa2Cl7 [orthorhombic, Pna21 (no.33), a = 1185.7(2), b = 891.4(4), c = 1071.6(2) pm, V = 1132.6(3)·106 pm3, Z = 4, T = 298 K, R1 for 1994 reflections with I0>2σ(I0): 0.0692] contains discrete indium(I) cations and Ga2Cl7 anions. InGa2Cl7 crystallizes isotypic with Ga3Cl7 and KGa2Cl7. InI is coordinated by ten chloride anions in an irregular (4+6) mode. No evidence was found for the stereochemical activity of the In‐5s2 electron pair. 相似文献
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The crystal structure of B‐type Er2O[SiO4] has been determined by single crystal X‐ray diffraction. It crystallizes with the (Mn,Fe)2[PO4]F type structure in the monoclinic space group C2/c (a = 14.366(2), b = 6.6976(6), c = 10.3633(16) Å, ß = 122.219(10)°, Z = 8) and shows anionic tetrahedral [SiO4]4– units and non‐silicon‐bonded O2– anions in distorted [OEr4]10+ tetrahedra. The [(Er1)O6+1] and [(Er2)O6] polyhedra form infinite chains which are connected by common edges. 相似文献
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Indium(I) tetraiodoaluminate, InAlI4, was obtained from the respective molar amounts of In, InI3 and AlI3 at 553 K. The crystal structure [monoclinic, P21/m (no. 11), a = 713.5(4), b = 1182.2(3), c = 1108.3(6) pm, β = 96.32(6)°, V = 1013.2(8)·106 pm3, Z = 4, R1 for 981 reflections with I0>2σ(I0): 0.0404] contains discrete indium(I) cations and tetraiodoaluminate anions. No evidence was found for a stereochemical activity of the In‐5s2 electron pair. InAlI4 (Person code mP24) represents a new structure type within the ABX4 structure family. 相似文献
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