A novel binucleus mixed-ligand[Cd2(phen)4(bmal)2]·3H2O (phen=phenanthroline; bmal=benzylmalonic acid radical) has been synthesized by the reaction of phen and bmal with cadmium(Ⅱ) salt. X-ray crystal structure a...A novel binucleus mixed-ligand[Cd2(phen)4(bmal)2]·3H2O (phen=phenanthroline; bmal=benzylmalonic acid radical) has been synthesized by the reaction of phen and bmal with cadmium(Ⅱ) salt. X-ray crystal structure analysis was carried out to determine the crystal structure of the title complex. The crystal of the title complex belongs to monoclinic system with space group P21/c, a=1.119 1(8) nm, b=2.480 5(17) nm, c=1.063 4(8) nm, β=142.042(12)°, Z=4, V=2.887(3) nm3, Dc=1.613 g·cm-3, R1=0.046 2, wR2=0.115 6, F(000)=1 424. One carboxyl of bmal is coordinated to Cd(1) with monodentate form, the others are coordinated to Cd(2) with bidentate form. The complexes form a 1-D chain structure bridged by hydrogen bonds that formed by uncoordinated water and oxygen atom of carboxyl group in bmal, the 2-D network structure was formed by π-π interaction of neighbouring phen. CCDC: 257080.展开更多
利用氯氧化锆生产过程中排放的稀碱液、酸性硅渣辅加少量石英砂,研究了δ-层状结晶二硅酸钠的制备工艺,得到较佳合成工艺条件为:反应液配比M=n(S iO2)/n(Na2O)=2.0,煅烧温度为650℃~750℃,结晶成型时间20 m in^30 m in;对优化条件下制...利用氯氧化锆生产过程中排放的稀碱液、酸性硅渣辅加少量石英砂,研究了δ-层状结晶二硅酸钠的制备工艺,得到较佳合成工艺条件为:反应液配比M=n(S iO2)/n(Na2O)=2.0,煅烧温度为650℃~750℃,结晶成型时间20 m in^30 m in;对优化条件下制备的样品进行了性能测试,结果表明,钙、镁离子交换量以CaCO3、MgCO3计分别为349.1 mg/g、410.4 mg/g,样品经X射线衍射分析为δ-层状结晶二硅酸钠,各项指标达到GB/T 19421-2003标准;同时可从硅渣预处理工艺中回收附加值高的锆英砂和偏锆酸钠等锆组分,并可返回氯氧化锆生产系统二次使用。展开更多
文摘A novel binucleus mixed-ligand[Cd2(phen)4(bmal)2]·3H2O (phen=phenanthroline; bmal=benzylmalonic acid radical) has been synthesized by the reaction of phen and bmal with cadmium(Ⅱ) salt. X-ray crystal structure analysis was carried out to determine the crystal structure of the title complex. The crystal of the title complex belongs to monoclinic system with space group P21/c, a=1.119 1(8) nm, b=2.480 5(17) nm, c=1.063 4(8) nm, β=142.042(12)°, Z=4, V=2.887(3) nm3, Dc=1.613 g·cm-3, R1=0.046 2, wR2=0.115 6, F(000)=1 424. One carboxyl of bmal is coordinated to Cd(1) with monodentate form, the others are coordinated to Cd(2) with bidentate form. The complexes form a 1-D chain structure bridged by hydrogen bonds that formed by uncoordinated water and oxygen atom of carboxyl group in bmal, the 2-D network structure was formed by π-π interaction of neighbouring phen. CCDC: 257080.
文摘利用氯氧化锆生产过程中排放的稀碱液、酸性硅渣辅加少量石英砂,研究了δ-层状结晶二硅酸钠的制备工艺,得到较佳合成工艺条件为:反应液配比M=n(S iO2)/n(Na2O)=2.0,煅烧温度为650℃~750℃,结晶成型时间20 m in^30 m in;对优化条件下制备的样品进行了性能测试,结果表明,钙、镁离子交换量以CaCO3、MgCO3计分别为349.1 mg/g、410.4 mg/g,样品经X射线衍射分析为δ-层状结晶二硅酸钠,各项指标达到GB/T 19421-2003标准;同时可从硅渣预处理工艺中回收附加值高的锆英砂和偏锆酸钠等锆组分,并可返回氯氧化锆生产系统二次使用。
