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1.
合成了N,N'-二(十二烷基)乙二胺(用R2en表示),并用元素分析,红外光谱ESI及1HNMR等方法对其组成及结构进行了分析.研究了在微酸性介质中对铬(Ⅵ)的萃取行为,考察了初始水相酸度、铬(Ⅵ)浓度、R2en浓度、相比及温度等因素对铬(Ⅵ)萃取率的影响.用等摩尔系列法确定了R2en与Cr2O72-的摩尔比为2:1.用1.0 mol·L-1氢氧化钠溶液对含铬(Ⅵ)有机相进行反萃取,一次反萃率达98.11%.经反萃后的有机相可再循环利用. 相似文献
2.
溴化二水二(皮考林酰胺)合钴配合物的合成及晶体结构 总被引:1,自引:0,他引:1
用皮考林酰胺、六水合硝酸钴和苄基溴反应制得一种新配合物[(C6H6N2O)2Co(H2O)2].B r2,通过红外光谱、元素分析及X射线晶体衍射对化合物进行了表征.结构分析结果表明,配合物属单斜晶系,P2(1)/n空间群,晶胞参数为:a=0.647 61(5)nm,b=1.026 43(9)nm,c=1.264 14(11)nm,β=93.823 0(10),°V=0.838 44(12)nm3,Z=4,Dc=1.977 g/cm3,μ=5.812 mm-1,F(000)=490,R1=0.071 0,wR2=0.251 6.配合物中,Co(Ⅱ)离子为六配位的八面体构型;相邻单元间通过N—H…B r和O—H…B r氢键相互连结而形成三维网状结构. 相似文献
3.
研究了N,N’-二(十二烷基)乙二胺二乙酸(简写为H2R2Y)的氯仿溶液对汞(Ⅱ)的萃取行为。考察了酸度、萃取剂浓度、相比及温度等因素对萃取率的影响;用电导法及摩尔比法测得萃合物的摩尔比为1:1;测定了新试剂H2R2Y对Hg^2 与Fe^3 、Co^2 、Ni^2 、Zn^2 、Cr^3 、Mn^2 等金属离子的分离效果;并根据分配比与温度的关系求出了萃取反应的△H^0、△S^0、△G^0和IgKex值,该萃取反应为放热反应。 相似文献
4.
A novel ionic compound [Fe(CN)6(PhCH2NC9H7)4]·12H2O (C70H80FeN10O12, Mr = 1309.29) has been synthesized and its structure was characterized by IR, elemental analysis and X-ray diffraction. The compound crystallizes in triclinic, space group P1, with a = 10.968(7), b = 11.466(7), c = 14.077(8) , α = 87.014(7), β = 78.124(7), γ = 72.708(7)o, V = 1654.1(17) 3, Z = 1, Dc = 1.314 g·cm–3, F(000) = 692, μ = 0.298 mm–1, the final R = 0.0519 and wR = 0.1355. The building unit of the title compound consists of four (PhCH2N+C9H7) ions, one [Fe(CN)6]4– anion, and a dozen water molecules. According to the structural analysis, [Fe(CN)6]4– ions are linked together by O–H···O and O–H···N hydrogen bonds, while (PhCH2N+C9H7) and [Fe(CN)6]4– ions interact with each other by electrostatic force to form an ionic compound. 相似文献
5.
超分子化合物[Ni(C_6H_4O_2N)_2·(H_2O)_4]_n的水热合成及晶体结构 总被引:4,自引:2,他引:4
用皮考林酸和六水合氯化镍反应制备了一种三维氢键超分子配合物,经X射线衍射分析确定了单晶结构.该晶体属单斜晶系,P21/m空间群,晶胞参数为:a=0.976 0(2)nm,b=0.522 54(10)nm,c=1.450 1(3)nm,Mr=374.98,α=90.08(3)°,β=90.08(3)°,γ=90°,V=0.739 63(3)nm3,Z=2,ρ=1.684 g/cm3,F(000)=388,μ=1.357 mm-1,R=0.039 0,wR=0.090 8.共收集2 656个衍射数据,其中1 569个为独立衍射点(Rint=0.033 2),可观测点数1 382个(I>2σ(I)).结果表明,在组成该超分子体系的基本结构单元[N i(C6H4O2N)2.(H2O)4]中,N i(Ⅱ)离子形成六配位的稍拉长的八面体构型,配合物单元之间通过氢键相互连接,形成了无限延伸的具有网状结构的三维超分子体系. 相似文献
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7.
The title complex [(C8H9NO2)·HgI2]n has been synthesized from the reaction of pyridine-3-ethylformate with mercury iodide in the mixture of DMF and absolute methanol. Its structure was determined by IR, elemental analysis and X-ray single-crystal diffraction analysis. The crystal is of monoclinic system, space group P21/n with a = 4.3397(5), b = 25.051(3), c = 12.3719(13) , β = 92.2130(10)o, C8H9HgI2NO2, Mr = 605.55, V = 1344.0(3) 3, Z = 4, Dc = 2.993 mg·m-3, F(000) = 1064, μ = 16.024 mm-1, the final R = 0.0258 and wR = 0.0504. In the title complex, the center Hg(Ⅱ ) exhibits a four-coordinated distorted tetrahedral geometry. A three-dimensional network arrangement is presented via Hg…I weak interactions among adjacent molecules. 相似文献
8.
合成了N,N'-二(十二烷基)乙二胺(用R2en表示),并用元素分析,红外光谱ESI及1HNMR等方法对其组成及结构进行了分析.研究了在微酸性介质中对铬(Ⅵ)的萃取行为,考察了初始水相酸度、铬(Ⅵ)浓度、R2en浓度、相比及温度等因素对铬(Ⅵ)萃取率的影响.用等摩尔系列法确定了R2en与Cr2O72-的摩尔比为21.用1.0 mol·L-1氢氧化钠溶液对含铬(Ⅵ)有机相进行反萃取,一次反萃率达98.11%.经反萃后的有机相可再循环利用. 相似文献
9.
1 INTRODUCTION The binding of metal ions by proteins and pep- tides is of fundamental interest due to the impor- tance of metal ions in biological systems. Metals may be part of the active sites of enzymes, stabilize the macromolecular structure of proteins and affect enzymes or membranes to control cell metabolism[1]. Therefore, for many years there has been a great in- terest in the study of complexes able to mimic these active sites of metalloproteins. In this case, metal complexes of… 相似文献
10.
合成了N,N′-二(十二烷基)乙二胺(用R2en表示),并用元素分析,红外光谱ESI及1HNMR等方法对其组成及结构进行了分析。研究了在微酸性介质中对铬(Ⅵ)的萃取行为,考察了初始水相酸度、铬(Ⅵ)浓度、R2en浓度、相比及温度等因素对铬(Ⅵ)萃取率的影响。用等摩尔系列法确定了R2en与Cr2O72-的摩尔比为2∶1。用1.0 mol.L-1氢氧化钠溶液对含铬(Ⅵ)有机相进行反萃取,一次反萃率达98.11%。经反萃后的有机相可再循环利用。 相似文献