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Crystal Structure of a Novel Supramolecule Made Up of Bis(μ_2-aqua)aqua(3-carboxy acrylate) monosodium(Ⅰ) 被引量:1
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作者 YUAN Ji xin HU Mao lin +1 位作者 chen Di mei chen li chun 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2002年第3期249-251,共3页
The title compound, bis( μ 2 aqua)(aqua)(3 carboxy acrylate) monosodium(Ⅰ), was synthesized in an ethanol water solution and its crystal structure was determined by means of X ray diffraction. The crystal is triclin... The title compound, bis( μ 2 aqua)(aqua)(3 carboxy acrylate) monosodium(Ⅰ), was synthesized in an ethanol water solution and its crystal structure was determined by means of X ray diffraction. The crystal is triclinic , space group P 1 with the cell parameters a =0 592 4(2) nm, b =0 635 7(3) nm, c =1 117 7(6) nm, α =104 18°, β =91 53°, γ =100 19°, V =0 400 6(3) nm 3, Z =2, the final R value is 0 033 5. The supramolecule is made up of coordination chains, which are further extended into a three dimensional network via the hydrogen bonding interactions. 展开更多
关键词 Carboxy acrylate monosodium(Ⅰ) CHAIN Intramolecular hydrogen SUPRAMOLECULE
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某电站水轮机转轮改造
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作者 陈立春 《福建水力发电》 2018年第2期12-13,共2页
转轮的选型设计是水轮机改造的关键设计环节。针对某电站冲击式水轮机转轮存在的问题,列出参数相近的三个转轮进行方案比较,并对转轮参数的合理取值进行了初步分析,通过绘制初选后的转轮效率曲线对比,最后得出水轮机改造的最佳机型方案。
关键词 冲击式水轮机 水轮机改造 性能参数比较 效率对比曲线 增效
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