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配体辅助Ni(Ⅱ)离子印迹材料的制备及性能
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作者 付冬雪 赵莉 +2 位作者 姚星月 王琪 成会玲 《化学工程》 CAS CSCD 北大核心 2024年第4期35-39,88,共6页
采用沉淀聚合法,以Ni(Ⅱ)离子为模板离子,邻氨基吡啶为配体,丙烯酰胺为功能单体,系统优化印迹条件,制备一系列Ni(Ⅱ)离子印迹聚合物Ni(Ⅱ)-IIP_(1-20)及相应的非印迹聚合物Ni(Ⅱ)-NIP_(1-20)。采用SEM(扫描电镜)、FT-IR(红外光谱)等对... 采用沉淀聚合法,以Ni(Ⅱ)离子为模板离子,邻氨基吡啶为配体,丙烯酰胺为功能单体,系统优化印迹条件,制备一系列Ni(Ⅱ)离子印迹聚合物Ni(Ⅱ)-IIP_(1-20)及相应的非印迹聚合物Ni(Ⅱ)-NIP_(1-20)。采用SEM(扫描电镜)、FT-IR(红外光谱)等对较优条件下制备的Ni(Ⅱ)-IIP_(3)及Ni(Ⅱ)-NIP_3进行结构表征,通过动力学吸附实验和等温吸附实验等进一步探究其吸附行为。结果表明:Ni(Ⅱ)-IIP_3对Ni(Ⅱ)离子的平衡吸附量达109.48 mg/g,印迹因子为3.70,是典型的介孔材料。其表面存在吸附Ni(Ⅱ)离子的特异性印迹孔穴,吸附行为更符合准二级动力学模型和Freundlich等温吸附模型。此外,在“竞争离子”Co(Ⅱ)离子存在的条件下,Ni(Ⅱ)-IIP_3对Ni(Ⅱ)离子仍具有较强的吸附能力和良好的吸附选择性,是一种性能优异的新型吸附材料。 展开更多
关键词 ni()离子 沉淀聚合法 离子印迹聚合物 邻氨基吡啶
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基于双功能单体的Ni(Ⅱ)离子印迹复合膜的制备及性能研究
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作者 洪玉文 汪鑫 +3 位作者 付冬雪 王贵芳 罗甘滨 成会玲 《化工新型材料》 CAS CSCD 北大核心 2024年第2期91-97,共7页
采用沉淀聚合法,以Ni(Ⅱ)离子为模板离子,α-甲基丙烯酸和N-异丙基丙烯酰胺为双功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,通过正交试验设计,对制备Ni(Ⅱ)离子印迹复合膜的实验条件进行系统优化,制备了16种Ni(Ⅱ)离... 采用沉淀聚合法,以Ni(Ⅱ)离子为模板离子,α-甲基丙烯酸和N-异丙基丙烯酰胺为双功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,通过正交试验设计,对制备Ni(Ⅱ)离子印迹复合膜的实验条件进行系统优化,制备了16种Ni(Ⅱ)离子印迹复合膜[Ni(Ⅱ)-IICMs]和相应的非印迹复合膜(NICMs),得出制备Ni(Ⅱ)-IICMs的较优实验条件。采用平衡吸附实验对Ni(Ⅱ)-IICMs和NICMs进行吸附量和印迹因子评价,结果表明:在较优实验条件下制备的Ni(Ⅱ)-IICM_(8),平衡吸附量为1.286mmol/g,印迹因子为1.737。采用红外光谱、扫描电镜、氮气吸附/脱附等手段对Ni(Ⅱ)-IICM_(8)和相应NICM_(8)的内部结构及表面形貌进行表征。使用动力学吸附和等温吸附实验对Ni(Ⅱ)-IICM_(8)和NICM_(8)的吸附行为进行研究,结果表明:Ni(Ⅱ)-IICM_(8)对Ni(Ⅱ)离子的吸附,在较短时间内即可快速达到吸附平衡,且在不同浓度的溶液中都有较好的吸附效果。在不同温度下,探究Ni(Ⅱ)-IICM_(8)的吸附行为,结果表明Ni(Ⅱ)-IICM_(8)具有良好的“温度响应性”。综上所述,说明实验研究制备的Ni(Ⅱ)-IICM_(8),有望用于实际样品中Ni(Ⅱ)离子的分离和去除。 展开更多
关键词 沉淀聚合法 ni()离子 双功能单体 离子印迹复合膜 温度响应性
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改性壳聚糖对Ni(Ⅱ)的吸附性能研究
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作者 吴操 张丽芳 +1 位作者 宋轩宇 许代兵 《沈阳理工大学学报》 CAS 2024年第6期48-54,共7页
为研究改性壳聚糖对水中Ni(Ⅱ)的吸附性能,以三聚磷酸钠为交联剂,对经过乙酸-双氧水体系氧化后的壳聚糖进行一步离子交联,制备改性壳聚糖吸附材料。通过扫描电子显微镜、傅里叶变换红外光谱仪、X射线衍射仪等对材料的微观形貌、分子结... 为研究改性壳聚糖对水中Ni(Ⅱ)的吸附性能,以三聚磷酸钠为交联剂,对经过乙酸-双氧水体系氧化后的壳聚糖进行一步离子交联,制备改性壳聚糖吸附材料。通过扫描电子显微镜、傅里叶变换红外光谱仪、X射线衍射仪等对材料的微观形貌、分子结构及物相进行表征;采用条件实验探究改性壳聚糖吸附性能的影响因素,并对其吸附热力学进行分析。结果显示:改性后的壳聚糖呈纳米片状结构,成功实现了三聚磷酸钠中P—O与壳聚糖中—NH_(2)之间的交联;在三聚磷酸钠浓度为10 g/L、双氧水用量为5 mL、交联温度为40℃条件下制备的改性壳聚糖表现出较好的吸附性能,当pH为7、吸附时间为120 min、三聚磷酸钠改性壳聚糖投加量为50 mg时,其对Ni(Ⅱ)的去除率达到8371%;改性壳聚糖对Ni(Ⅱ)的吸附行为符合Langmuir等温吸附模型,吸附过程为自发吸热过程。 展开更多
关键词 改性壳聚糖 三聚磷酸钠 吸附 ni()
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Syntheses,crystal structures,and quantum chemistry calculation of two Ni(Ⅱ)coordination polymers
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作者 LI Xiumei HUANG Yanju +1 位作者 LIU Bo PAN Yaru 《无机化学学报》 SCIE CAS CSCD 北大核心 2024年第10期2031-2039,共9页
Two new coordination polymers,[Ni(Hpdc)(bib)(H_(2)O)]_(n)(1)and{[Ni(bib)_(3)](ClO_(4))_(2)}_(n)(2),were prepared by mixing Ni^(2+),3,5⁃pyrazoledicarboxylic acid(H3pdc)/p⁃nitrobenzoic acid and 1,4⁃bis(imidazol⁃1⁃ylmeth... Two new coordination polymers,[Ni(Hpdc)(bib)(H_(2)O)]_(n)(1)and{[Ni(bib)_(3)](ClO_(4))_(2)}_(n)(2),were prepared by mixing Ni^(2+),3,5⁃pyrazoledicarboxylic acid(H3pdc)/p⁃nitrobenzoic acid and 1,4⁃bis(imidazol⁃1⁃ylmethyl)butane(bib)by a hydrothermal method,respectively.X⁃ray crystallography reveals a 2D network constructed by six⁃coordinated Ni(Ⅱ)centers,bib,and Hpdc2-ligands in complex 1,while a 2D network is built by Ni(Ⅱ)and bib ligands in 2.Furthermore,the quantum⁃chemical calculations have been performed on‘molecular fragments’extracted from the crystal structure of 1 using the PBE0/LANL2DZ method in Gaussian 16 and the VASP program.CCDC:2343794,1;2343798,2. 展开更多
关键词 coordination polymer nickel()complex crystal structure quantum⁃chemical calculation
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新型三维Ni(Ⅱ)配合物的合成、晶体结构及对水中Fe^(3+)、CrO_(4)^(2-)与Cr_(2)O_(7)^(2-)的检测
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作者 安航宜 黄艳嬉 +3 位作者 王爱荣 王晓丽 李家明 史忠丰 《人工晶体学报》 CAS 北大核心 2024年第9期1599-1607,共9页
本文以3,5-吡啶二甲酸(简称3,5-H_(2)pdc)、1,4-双(1-咪唑基)苯(简称bib)及Ni(NO_(3))_(2)为原料,通过溶剂热法合成出了一种新型Ni(Ⅱ)配位聚合物[Ni(pdc)(bib)(H_(2)O)]_(n)(简称Ni-CP),并对其进行X射线单晶衍射、X射线粉末衍射、热重... 本文以3,5-吡啶二甲酸(简称3,5-H_(2)pdc)、1,4-双(1-咪唑基)苯(简称bib)及Ni(NO_(3))_(2)为原料,通过溶剂热法合成出了一种新型Ni(Ⅱ)配位聚合物[Ni(pdc)(bib)(H_(2)O)]_(n)(简称Ni-CP),并对其进行X射线单晶衍射、X射线粉末衍射、热重、红外光谱、荧光性能等分析研究。研究结果显示:Ni-CP属单斜晶系,空间群C2/c,其不对称单元包含1个Ni(Ⅱ)、2个1/2的bib配体、1个完全去质子化的3,5-pdc^(2-)配体和1个配位水分子。中心Ni(Ⅱ)采用六配位的方式形成NiO_(3)N_(3)的不规则八面体。bib配体和3,5-pdc^(2-)配体分别通过双齿配位模式μ_(2)-η^(1)∶η^(1)桥联和三齿配位模式μ_(3)-η^(1)∶η^(1)∶η^(1)桥联Ni(Ⅱ)形成三维金属有机框架。从拓扑的角度来看,其二维框架结构可以简化为3-连接的Schlafli符号为(4·8~2)拓扑结构。假如将3,5-pdc^(2-)配体和Ni(Ⅱ)作为节点,bib配体视为连接器,三维结构可以简化为3,5-连接双节点的(4·6·8)(4·6~2·8~7)拓扑结构,孔隙率为17.4%。Ni-CP能够选择性检测出Fe^(3+)、CrO_(4)^(2-)与Cr_(2)O_(7)^(2-),其检测限分别为4.275×10^(-5)、2.681×10^(-5)和2.681×10^(-5)mol/L,有较高的猝灭率。 展开更多
关键词 镍()配合物 溶剂热法 晶体结构 拓扑结构 荧光性质 孔隙率
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基于三氰基铁(Ⅲ)酸盐的Fe^(Ⅲ)_(4)Ni^(Ⅱ)_(2)六核配合物的合成、结构及磁性 被引量:2
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作者 李国玲 王蒙蒙 +2 位作者 唐新学 张然 倪中海 《无机化学学报》 SCIE CAS CSCD 北大核心 2023年第8期1564-1570,共7页
利用三氰基铁酸盐(Bu_(4)N)[FeⅢ(Tp)(CN)_(3)](Tp=氢化三(1-吡唑基)硼酸)与配体2,9-二吡唑基-1,10-菲咯啉(dpzpen)以及高氯酸镍反应合成了一例氰根桥联的Fe^(Ⅲ)_(4)Ni^(Ⅱ)_(2)六核配合物[Fe_(4)Ni_(2)(Tp)_(4)(CN)_(12)(dpzpen)_(2)]... 利用三氰基铁酸盐(Bu_(4)N)[FeⅢ(Tp)(CN)_(3)](Tp=氢化三(1-吡唑基)硼酸)与配体2,9-二吡唑基-1,10-菲咯啉(dpzpen)以及高氯酸镍反应合成了一例氰根桥联的Fe^(Ⅲ)_(4)Ni^(Ⅱ)_(2)六核配合物[Fe_(4)Ni_(2)(Tp)_(4)(CN)_(12)(dpzpen)_(2)]·12H_(2)O·3CH_(3)OH (1)。结构研究表明配合物1具有近似菱形的Fe^(Ⅲ)_(2)Ni^(Ⅱ)_(2)骨架结构,另外2个Fe则通过氰根延伸在菱形的外侧。磁性研究表明在配合物1中氰根桥联的Fe和Ni表现出铁磁相互作用。更为重要的是,基于配合物1的结构模型,对它的变温磁化率数据进行拟合得到了不同Fe-Ni之间的磁耦合常数,得到的最佳磁耦合常数J3d(15.73 cm^(-1))>J2d(3.53 cm^(-1))≈J1d(3.50 cm^(-1))与Ni-N键的键长以及Ni-N≡C键角的变化趋势有关(J3d:0.206 5 nm,169.8°;J2d:0.206 2 nm,163.1°;J1d:0.198 7 nm,161.6°)。以上结果表明Ni-N键长越短,Ni-N≡C键角越大,Fe与Ni之间的铁磁耦合越强。 展开更多
关键词 三氰基铁酸盐 Feni配合物 晶体结构 磁性 磁性-结构相互关系
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Effects of binuclear copper(Ⅱ)threonine complex on blood glucose, lipids and protection of the hearts and kidneys in diabetic mice
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作者 谢英 王菲 +2 位作者 李菲菲 李明升 邓丽丽 《Journal of Chinese Pharmaceutical Sciences》 CAS 2007年第1期14-17,共4页
Aim To study the effects of binuclear copper (Ⅱ) threonine complex (Cu2 (Thr)4) as analogue of superoxide dismutase (SOD) on blood glucose, blood lipids and vessels of hearts and kidneys in diabetic mice. Met... Aim To study the effects of binuclear copper (Ⅱ) threonine complex (Cu2 (Thr)4) as analogue of superoxide dismutase (SOD) on blood glucose, blood lipids and vessels of hearts and kidneys in diabetic mice. Methods Diabetic mouse model was established by intraperitioneal injection of alloxan. Low, middle, and high doses of Cu2(Thr)4 at 0.002%, 0.02% and 0.1% were given respectively to diabetic mice following lavage. The fasting blood glucose was determined after the diabetic mice were given Cu2 (Thr)4 for 0, 30, and 45 d. The diabetic mice were killed on the 45th day. Then glycosylated hemoglobin (HbAlc) and blood lipids were assayed, and pathologic changes in hearts and kidneys stained with HE were observed. Results Compared with the control group in which the diabetic mice were given distilled water, the value of blood glucose reduced significantly in middle dose group (P 〈 0.01 ), followed by that in low dose group (P 〈 0.05). TC level reduced markedly and HDL level increased significantly in all three treatment groups (P 〈 0.05). Especially in middle dose group, cardiac muscle fibers were neatly arranged, nucleus and cytoplasm well distributed, glomeruli showing normal structure, cells well distributed and staining being normal. Conclusion Cu2 (Thr)4 reduces blood glucose, regulates blood lipids, and play protective action on the vessels of hearts and kidneys in diabetic mice. The effects of it in middle dose were better than those of other doses. 展开更多
关键词 Binuclear copper (ⅱ threonine complex Diabetic mice Blood glucose Blood lipids
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五角双锥构型的场诱导Co^(Ⅱ)单离子磁体
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作者 赵淑艳 《无机化学学报》 SCIE CAS CSCD 北大核心 2024年第8期1583-1591,共9页
利用CoCl_(2)·6H_(2)O和2,6-二乙酰吡啶双(氨基脲)(H_(2)dapsc)在水和乙醇的混合溶剂中回流反应得到一例具有五角双锥构型的单核Co~Ⅱ配合物[Co(H_(2)dapsc)(H_(2)O)Cl]Cl·2H_(2)O(1),其中中性的H_(2)dapsc配体分子提供5个配... 利用CoCl_(2)·6H_(2)O和2,6-二乙酰吡啶双(氨基脲)(H_(2)dapsc)在水和乙醇的混合溶剂中回流反应得到一例具有五角双锥构型的单核Co~Ⅱ配合物[Co(H_(2)dapsc)(H_(2)O)Cl]Cl·2H_(2)O(1),其中中性的H_(2)dapsc配体分子提供5个配位原子构成其赤道平面,1个水分子和1个Cl^(-)离子则占据其轴向位置,同时在其固态结构中包含1个价态平衡Cl^(-)离子和晶格水分子。直流磁化率研究表明,该配合物具有强的磁各向异性;交流磁性质表明其存在慢磁弛豫行为,直接和拉曼过程同时主导其弛豫,自旋翻转能垒为55.55 K。结合理论计算可以得出,导致该配合物慢磁弛豫行为的主要原因是五角双锥结构的面内各向异性,计算得到的D、E值为45.68、-0.32 cm^(-1)。 展开更多
关键词 Co^()配合物 五角双锥 晶体结构 磁性质
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竹笋壳纤维对模拟水中Cr(Ⅵ)和Ni(Ⅱ)吸附性能的研究 被引量:1
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作者 邓斌 杨成 +1 位作者 祖林鹏 王章鸿 《水处理技术》 CAS CSCD 北大核心 2023年第4期89-94,共6页
竹笋壳是在竹笋加工过程中产生量最大的固体废弃物之一,若处理不当会造成资源浪费和环境污染问题。通过逐级利用方式,将提取棕色素和膳食纤维后的竹笋壳纤维作为吸附剂(BFs)吸附Cr(Ⅵ)和Ni(Ⅱ)。利用SEM和FT-IR对BFs表观形貌和表面官能... 竹笋壳是在竹笋加工过程中产生量最大的固体废弃物之一,若处理不当会造成资源浪费和环境污染问题。通过逐级利用方式,将提取棕色素和膳食纤维后的竹笋壳纤维作为吸附剂(BFs)吸附Cr(Ⅵ)和Ni(Ⅱ)。利用SEM和FT-IR对BFs表观形貌和表面官能团等理化性质进行分析;考察投加量和初始pH对吸附效果的影响,并结合吸附动力学、吸附等温线和热力学模型对吸附过程和吸附机理进行探讨。研究结果表明,BFs表面粗糙多孔且含有丰富的-OH、-SO-、C-O等官能团。在投加量分别为4.0、2.0 g/L时,BFs对Cr(Ⅵ)和Ni(Ⅱ)的去除率分别可达98.8%和96.8%。准二级动力学模型和Sips模型能够更好地拟合BFs对Cr(Ⅵ)和Ni(Ⅱ)的吸附过程,表明该吸附反应过程主要受化学作用主导,且Cr(Ⅵ)和Ni(Ⅱ)的最大理论吸附量分别为10.58、29.70 mg/g。热力学分析显示,吸附过程ΔG小于0、ΔH为正值,说明BFs对Cr(Ⅵ)和Ni(Ⅱ)的吸附为自发的吸热反应。吸附机理分析表明,静电力吸附作用和氧化还原吸附作用在BFs吸附Cr(Ⅵ)时扮演重要作用,而Ni(Ⅱ)的吸附主要基于静电吸附作用、化学沉淀作用和表面络合作用。该研究为实现竹笋壳的逐级资源化利用和水体重金属污染治理提供了思路。 展开更多
关键词 竹笋壳 吸附 Cr(Ⅳ) ni() 吸附机理
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Synthesis,Crystal Structure and Magnetic Properties of a Ni(Ⅱ) Supramolecular Complex Based on Aromatic Polycarboxylate Ligand 被引量:1
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作者 姚景才 王玉芳 +3 位作者 张丽 郭金波 曹欣祥 樊翠平 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第2期170-175,共6页
A Ni(Ⅱ) supramolecular complex,[Ni 2 (btec)(3py) 2 (H 2 O) 8 ](H 2 O) 4 (1),has been synthesized by Ni(ClO 4) 2 ·6H 2 O,benzene-1,2,4,5-tetracarboxylic acid (H 4 btec) and terminal ligand 3-hydro... A Ni(Ⅱ) supramolecular complex,[Ni 2 (btec)(3py) 2 (H 2 O) 8 ](H 2 O) 4 (1),has been synthesized by Ni(ClO 4) 2 ·6H 2 O,benzene-1,2,4,5-tetracarboxylic acid (H 4 btec) and terminal ligand 3-hydroxypyridine (3py) in aqueous solution.The title compound crystallizes in triclinic system,space group P1,with a=8.5637(12),b=9.4138(13),c=10.3611(14),α=67.9540(10),β=85.1740(10),γ=76.9890(10)°,V=754.33(18) 3,Z=2,M r=386.96,D c=1.704 Mg/m 3,μ=1.345 mm-1,F(000)=402,the final R=0.0222 and wR=0.0563 for 2675 observed reflections with I 2σ(Ⅰ).The adjacent discrete molecules are further self-assembled by intermolecular π-π and O-H···O hydrogen bonding interactions to construct a 3D supramolecular framework.Magnetic measurement shows weak ferromagnetic interaction in the range of 2~300 K. 展开更多
关键词 SYNTHESIS crystal structure ni(ⅱ) complex supramolecular framework
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Synthesis, Structure and Magnetic Property of a Binuclear Nickel(Ⅱ) Complex 被引量:1
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作者 何敏 李庆丰 +3 位作者 谢婷 徐国敏 于杰 李伟 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第4期582-586,共5页
A new binuclear complex [Ni2(2,2'-bpy)2(C8H3NO6)2(H2O)4] 1 (2,2'-bpy = 2,2'- bipyridine, C8H3NO6 = 4-nitrophthalate) has been synthesized by a hydrothermal reaction and characterized by X-ray single-crystal... A new binuclear complex [Ni2(2,2'-bpy)2(C8H3NO6)2(H2O)4] 1 (2,2'-bpy = 2,2'- bipyridine, C8H3NO6 = 4-nitrophthalate) has been synthesized by a hydrothermal reaction and characterized by X-ray single-crystal diffraction analysis. The complex crystallizes in triclinic, space group P1 with a = 7.206(2), b = 10.337(4), c = 12.480(4) , α = 89.887(11), β = 77.033(9), γ = 78.349(6)o, V = 886.3(5) 3, Z = 1, C36H30Ni2N6O16, Mr = 920.08, Dc = 1.724 g cm-3, F(000) = 472, μ = 1.152 mm-1, the final R = 0.0458 and wR = 0.1163 for 3372 observed reflections with I 2σ(Ⅰ). The two Ni(Ⅱ) ions are bridged by two 4-nitrophthalates both in a bis-monodentate mode. Magnetic measurements reveal that the intramolecular exchange couplings in the dimer are ferromagnetic with 2J/k = 2.32 K, D =-1.44 K and g = 2.18. 展开更多
关键词 crystal structure ni(ⅱ) complex 4-nitrophthalate ferromagnetic interactions
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Synthesis, Crystal Structure and Thermal Stability of a Nickel(Ⅱ) Complex with Bicycle[2.2.1]-2-hepten-5,6-dicarboxylic Acid 被引量:5
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作者 李薇 李玉林 +1 位作者 李昶红 谭雄文 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第9期1279-1282,共4页
The nickel complex {Ni(2,2-bipy)(H2O)3[C8H11O2(COO)]}(H2O)3 with bicycle-[2.2.1]-2-hepten-5,6-dicarboxylic acid [C7H8(COOH)2] and 2,2'-bipyridine (bipy) as ligands has been synthesized and characterized. ... The nickel complex {Ni(2,2-bipy)(H2O)3[C8H11O2(COO)]}(H2O)3 with bicycle-[2.2.1]-2-hepten-5,6-dicarboxylic acid [C7H8(COOH)2] and 2,2'-bipyridine (bipy) as ligands has been synthesized and characterized. It crystallizes in monoclinic, space group P , with a = 0.74975(3), b = 1.20309(4), c = 1.30593(4) nm, α = 109.861(2), β = 98.519(2), γ = 90.575(2)o, V = 1.09337(7) nm3, Dc = 1.552 g/cm3, Z = 2, F(000) = 524, the final GOOF = 1.064, R = 0.0397 and wR = 0.1171. The crystal structure shows that the nickel ion is coordinated with four oxygen atoms from one bicycle[2.2.1]-2-hepten-5,6-dicarboxylic acid molecule and three water molecules and two nitrogen atoms from the 2,2′-bipyridine molecule, forming a distorted octahedral coordination geometry. The result of TG analysis shows that the title complex is stable under 200.0 ℃. 展开更多
关键词 nickel(ⅱ complex crystal structure thermal stability analysis
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Hydrothermal Synthesis and Crystal Structure of a New One-dimensional Nickel(Ⅱ) Complex with 2-Pyridinecarboxyic Acid and 4,4′-Bipyridine Ligands 被引量:4
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作者 李秀梅 牛艳玲 +3 位作者 王庆伟 刘博 赵霞 李丹 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第3期321-324,共4页
A new metal-organic coordination polymer [Ni[(2-pya)2(4,4′-bipy)]n·6nH2O (2-pya = 2-pyridinecarboxylic acid, 4,4′-bipy = 4,4′-pyridine) 1 has been hydrothermally synthesized and structurally characterize... A new metal-organic coordination polymer [Ni[(2-pya)2(4,4′-bipy)]n·6nH2O (2-pya = 2-pyridinecarboxylic acid, 4,4′-bipy = 4,4′-pyridine) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in tetragonal, space group I4 1/α with a = b = 22.5642(19), c = 10.7118(18) A, V = 5453.8(11) A^3, C22H28N4NiO10, Mr= 567.19, Dc = 1.382 g/cm^3, μ(MoKα) = 0.769 mm^-1, F(000) =2368, Z = 8, the final R = 0.0572 and wR = 0.1254 for 1401 observed reflections (I 〉 2σ(I)). It exhibits a one-dimensional chain-like structure by mixed ligands of 2-pyridinedicarboxylic acid and 4,4′-pyridine. 展开更多
关键词 2-pyridinecarboxylic acid nickel(ⅱ complex crystal structure
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Syntheses and Crystal Structures of One-dimensional Ni(Ⅱ) Complexes with 5-Tert-butyl Isophthalic Acid 被引量:1
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作者 樊耀亭 李波 +1 位作者 马录芳 王利亚 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第9期1061-1066,共6页
Two new Ni( Ⅱ) coordination polymers, {[Ni(tbip)(bipy)(H2O)]-0.5H2O}n 1 and [Ni(tbip)(phen)(H2O)]n 2 (Hatbip = 5-tert-butyl isophthalic acid, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline), have... Two new Ni( Ⅱ) coordination polymers, {[Ni(tbip)(bipy)(H2O)]-0.5H2O}n 1 and [Ni(tbip)(phen)(H2O)]n 2 (Hatbip = 5-tert-butyl isophthalic acid, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, X-ray diffraction, and IR spectroscopy. In the two polymers, H2tbip acts as a tridentate ligand. Compound 1 has a tbip bridged 1-D linear chain which is extended by hydrogen bonds into a 1-D double chain, while compound 2 exhibits a 1-D zigzag chain. 展开更多
关键词 ni(ⅱ) complex 5-tert-butyl isophthalic acid crystal structure
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MHC-Ⅱ联合MHC-Ⅰ免疫组化染色在特发性炎性肌病诊断中的应用价值探讨
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作者 朵建英 邸丽 +7 位作者 卢岩 王敏 黄月 朱文佳 文欣玫 徐敏 陈海 笪宇威 《中国临床新医学》 2024年第3期277-282,共6页
目的探讨主要组织相容性复合体(MHC)-Ⅱ联合MHC-Ⅰ免疫组化染色在特发性炎性肌病(IIM)诊断中的应用价值。方法收集2010年3月至2018年4月在首都医科大学宣武医院神经内科行肌肉活检患者的标本29份,并通过医院电子病历系统收集患者的临床... 目的探讨主要组织相容性复合体(MHC)-Ⅱ联合MHC-Ⅰ免疫组化染色在特发性炎性肌病(IIM)诊断中的应用价值。方法收集2010年3月至2018年4月在首都医科大学宣武医院神经内科行肌肉活检患者的标本29份,并通过医院电子病历系统收集患者的临床资料,包括4种IIM[皮肌炎(DM)5例,多发性肌炎(PM)5例,散发性包涵体肌炎(IBM)4例及坏死性自身免疫性肌病(NAM)5例]和2种非炎性肌病(NIM)[肌营养不良(MD)5例,dysferlinopathy肌病5例]。将标本进行苏木精-伊红(HE)染色及MHC-Ⅰ、MHC-Ⅱ免疫组化染色。结果免疫组化染色结果显示,PM、DM及IBM患者肌肉标本MHC-Ⅰ阳性率达100.0%,NAM和MD患者肌肉标本MHC-Ⅰ阳性率为80.0%,dysferlinopathy肌病患者肌肉标本MHC-Ⅰ阳性率为20.0%。PM和IBM患者肌肉标本MHC-Ⅱ阳性率分别为40.0%、50.0%,其余类型疾病患者肌肉标本的MHC-Ⅱ免疫组化染色均呈阴性。结论相较于MHC-Ⅰ免疫组化染色,MHC-Ⅱ免疫组化染色在鉴别IIM与NIM中有较高的特异性。MHC-Ⅱ联合MHC-Ⅰ免疫组化染色对不同肌病类型的诊断有较好的临床应用价值。 展开更多
关键词 特发性炎性肌病 主要组织相容性复合体- 主要组织相容性复合体-Ⅰ 免疫组化染色
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一例镍(Ⅱ)金刚石拓扑MOF的合成及其光催化降解性能
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作者 潘会宾 黄沛沛 +2 位作者 吴婷婷 卢久富 高霞 《化学研究与应用》 CAS 北大核心 2024年第4期780-786,共7页
以4-(2-甲基咪唑-1-基)苯甲酸(HMIBA)和Ni(NO_(3))_(2_)·6H_(2)O为原料,在溶剂热条件下合成了一例结构新颖的Ni(Ⅱ)配位聚合物:[Ni(MIBA)2]n,利用X-射线单晶衍射、元素分析、热重分析和红外光谱对配位聚合物进行了表征。X-射线单... 以4-(2-甲基咪唑-1-基)苯甲酸(HMIBA)和Ni(NO_(3))_(2_)·6H_(2)O为原料,在溶剂热条件下合成了一例结构新颖的Ni(Ⅱ)配位聚合物:[Ni(MIBA)2]n,利用X-射线单晶衍射、元素分析、热重分析和红外光谱对配位聚合物进行了表征。X-射线单晶衍射的测定结果表明上述配位聚合物拥有三维空间结构。配位聚合物中相邻的Ni(Ⅱ)通过HMIBA配体桥联形成了扭曲的金刚石状笼,可容纳直径为9A的假想球体,并且配位聚合物沿着c轴方向存在较大尺寸的孔道结构。此外,配位聚合物对罗丹明B(RhB)和亚甲基蓝(MB)表现出优良的光催化降解性能,RhB和MB的降解率分别达到了75.4%和91%。 展开更多
关键词 ni()配位聚合物 晶体结构 金刚石状笼 光催化降解
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Hydrothermal Synthesis, Crystal Structure and Fluorescent Property of a Cd(Ⅱ) Complex Based on Biimidazole and Isonicotinate-N-oxide 被引量:4
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作者 毛稳玲 胡宗球 丁瑜 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第4期587-591,共5页
A new complex [Cd(H2biim)2(H2O)2]·(ino)2·4H2O (H2biim = 2,2'-biimidazole, ino = isonicotinate-N-oxide) has been prepared and characterized by single-crystal X-ray diffraction analysis, IR and fluore... A new complex [Cd(H2biim)2(H2O)2]·(ino)2·4H2O (H2biim = 2,2'-biimidazole, ino = isonicotinate-N-oxide) has been prepared and characterized by single-crystal X-ray diffraction analysis, IR and fluorescence spectra analysis. The crystal is of triclinic system, space group P1 with a = 7.5380(6), b = 8.0402(7), c = 13.5094(11) , α = 104.269(1), β = 93.604(1), γ = 98.349(1)°, V = 780.93(11) 3, Mr = 765.00, Dc = 1.627 g/cm3, F(000) = 390, μ = 0.776 mm-1 and Z = 1. The final R = 0.0322 and wR = 0.0825 for 7038 observed reflections with I 2σ(I) and R = 0.0341 and wR = 0.0832 for all data. The title complex exhibits an infinite chain-like structure through bridging isonicotinate-N-oxide. Strong interchain hydrogen bonds between isonicotinate-N-oxide and H2biim result in the robust 3-D supramolecular architecture. Moreover, the complex shows strong photoluminescence with emission maximum at λ = 401 nm upon λex = 330 nm. 展开更多
关键词 cadmium(ⅱ complex crystal structure 2 2-biimidazole isonicotinc acid N-oxide hydrothermal synthesis fluorescent property
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2-AMINOMETHYLPYRIDINE NICKEL(Ⅱ) COMPLEXES—SYNTHESIS,MOLECULAR STRUCTURE AND CATALYSIS OF ETHYLENE POLYMERIZATION 被引量:2
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作者 伍青 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2008年第5期567-573,共7页
A series of new nickel(Ⅱ)complexes with 2-aminomethylpyridine ligands,(2-PyCH_2NHAr)_2NiBr_2(Ar=2,6- dimethylphenyl 2a;2,6-diisopropylphenyl 2b,2,6-difluorophenyl 2c),have been synthesized and used as catalyst precur... A series of new nickel(Ⅱ)complexes with 2-aminomethylpyridine ligands,(2-PyCH_2NHAr)_2NiBr_2(Ar=2,6- dimethylphenyl 2a;2,6-diisopropylphenyl 2b,2,6-difluorophenyl 2c),have been synthesized and used as catalyst precursors for ethylene polymerization in the presence of methylaluminoxane(MAO).The catalysts containing ortho-alkyl-substituents afford high molecular weight branched polyethylenes as well as a certain amount of oligomers.Enhancing the steric bulk of the alkyl substituent of the catalyst resulted in... 展开更多
关键词 2-Aminomethyipyridine nickel(ⅱ)complex CATALYST Ethylene polymerization Oligomer.
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Synthesis and Catalytic Activity of Nickel(Ⅱ)and Cobalt(Ⅱ) Complexes Involving Chiral Leucinol 被引量:2
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作者 罗梅 张志军 +1 位作者 汪磊 张竟成 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第12期1851-1856,共6页
The title nickel complex I and cobalt complex II were obtained separately from the direct reaction of D-(+)-leucinol with Ni(II) chloride and L-(-)-leucinol with Co(II) acetate tetra- hydrate in anhydrous met... The title nickel complex I and cobalt complex II were obtained separately from the direct reaction of D-(+)-leucinol with Ni(II) chloride and L-(-)-leucinol with Co(II) acetate tetra- hydrate in anhydrous methanol. The crystal structures of I and II were determined by single-crystal X-ray diffraction and further characterized by elemental analysis and IR. For I: [Ni(C18H45N3O3)]Cl2, orthorhombic, P212121, a = 11.2807(9), b = 14.7115(11), c = 16.3580(13) A, V = 2714.7(4) A3, Z = 4, Pcalcd = 1.177 Mg/m3, the final R = 0.0407, and 16539 reflections observed with I 〉 2σ(/); For II: [Co(C45HI08N6015)], trigonal, R3:H, a = 23.981(3), b =23.981(3), c = 10.8925(15) A, γ = 120°, V = 5425.1(14) A3, Z = 3, Pcalcd = 1.002 Mg/m3, the final R = 0.0625 for 16556 observed reflections with I 〉 2σ(I). The complexes were then used to catalyze the Henry reaction and obtained good catalytic results. The catalytic activity of the complexes was determined by IH NMR. And research is going towards the application to other organic reactions such as cyanosilylation reaction. 展开更多
关键词 chiral ieucinol nickel complex cobalt complex ni(II) chloride Co(II) acetate tetrahydrate
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A Novel Binuclear Cu(Ⅱ) Complex with Nitroxide Radicals Exhibiting Ferromagnetic Interactions 被引量:3
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作者 刘尚远 陈毅雯 高东昭 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2012年第1期39-44,共6页
A new binuclear Cu(Ⅱ) complex with nitronyl nitroxide radicals [Cu(NIT3Py)2Cl2]2(NIT3Py = 2-(3'-pyridinyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) has been synthesized and structurally characterized b... A new binuclear Cu(Ⅱ) complex with nitronyl nitroxide radicals [Cu(NIT3Py)2Cl2]2(NIT3Py = 2-(3'-pyridinyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) has been synthesized and structurally characterized by X-ray diffraction analysis.It crystallizes in monoclinic,space group C2/c with a = 38.483(4),b = 7.2450(8),c = 27.559(3) ,β = 134.0180(10)°,V = 5525.6(10) 3,C48H64Cl4Cu2N12O8,Mr = 1206.00,Z = 4,Dc = 1.450 g/cm3,μ(MoKα) = 1.025 mm-1,F(000) = 2504,S = 1.066,the final R = 0.0471 and wR = 0.1121 for 3286 observed reflections(I 2σ(I)).The title complex consists of centrosymmetric dinuclear units [Cu(NIT3Py)2Cl2]2,in which the copper ions are square-pyramidally coordinated by two pyridyl nitrogen atoms of two radical ligands and three chlorine anions,two of which bridge the copper ions.The magnetic measurements show ferromagnetic interactions between the copper ions and the radical ligands. 展开更多
关键词 Cu(ⅱ complex nitroxide radical crystal structure ferromagnetic interaction
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