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Syntheses,Crystal Structures and Antibacterial Activities of 5-Chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxylic Acid and Its Copper(Ⅱ) Compound 被引量:2
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作者 温辉梁 康静静 +2 位作者 戴兵 邓瑞红 胡海威 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第1期33-40,共8页
The title compounds 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxylic acid(C11H9Cl N2O2, HL)(1) and [Cu(L)2(H2O)](2) were prepared and structurally characterized by elemental analysis, IR and single-crysta... The title compounds 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carboxylic acid(C11H9Cl N2O2, HL)(1) and [Cu(L)2(H2O)](2) were prepared and structurally characterized by elemental analysis, IR and single-crystal X-ray diffraction. Compound 1(C11H9Cl N2O2) crystallizes in the monoclinic system, space group P21/n with a = 7.249(3), b = 20.515(10), c = 7.249(3),β= 96.30°, V = 1071.6(9) ?3, Z = 4, Mr = 236.65, Dc = 1.467 g/cm3, F(000) = 488, GOOF = 1.029, μ= 0.341 mm-1, the final R = 0.0736 and w R = 0.1966 for 1500 observed reflections with I 〉 2σ(I). Compound 2(C22H18Cl2Cu N4O5) crystallizes in the monoclinic system, space group P21/c with a = 7.2931(6), b = 24.548(2), c = 13.2726(11), β= 99.4040(10)°, V = 2344.2(3) ?3, Z = 4, Mr = 552.84, Dc = 1.566 g/cm3, F(000) = 1124, GOOF = 1.050, μ= 1.201 mm-1, the final R = 0.0376 and w R = 0.1000 for 3626 observed reflections with I 〉 2σ(I). 1 and 2 are connected through hydrogen bonding interactions to generate 2D and 3D supramolecular structures, respectively. Moreover, the preliminary antibacterial activities of 1 and 2 against the gram positive bacteria(S. aureus, C. albicans and B. subtilis) and gram negative bacteria(E. coli and P. aeruginosa) have been tested by using the microdilution method, and the results indicate that 2 is more active than 1 against the tested bacteria. 展开更多
关键词 pyrazole carboxylic acid copper compound helix chain crystal structure antibacterial activity
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Synthesis and Crystal Structure of Copper(Ⅱ) Compound with Didentate Schiff-base Ligand 被引量:1
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作者 YILong DINGBin CHENGPeng 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第1期25-28,共4页
The title complex [Cu(L)2] (HL=4-salicylideneamino-3,5-dimethanol-1,2,4-triazole) was synthesized by the reaction of Cu(CH3COO)22H2O with 4-salicylideneamino-3,5-dimethanol- 1,2,4-triazole in the methanol. The single-... The title complex [Cu(L)2] (HL=4-salicylideneamino-3,5-dimethanol-1,2,4-triazole) was synthesized by the reaction of Cu(CH3COO)22H2O with 4-salicylideneamino-3,5-dimethanol- 1,2,4-triazole in the methanol. The single-crystal X-ray study reveals that the compound crystallizes in monoclinic, space group P21/n with a = 11.746(5), b = 8.145(3), c = 12.786(5) ? b = 106.64(1), V = 1172(1) ?, Z = 2, Dc = 1.581 g/cm3, m = 0.989 mm-1, F(000) = 574, C22H22Cu- N8O6, Mr = 558.02, T = 293(2) K, R = 0.0394 and Rw = 0.0835 for 2376 observed reflections with I > 2s(I). The complex comprises a four-coordinated copper(II) center, with an N2O2 planar coordi- nation environment. The molecules are connected by hydrogen bonds to form one-dimensional chains which are further linked to form a two-dimensional plane. 展开更多
关键词 crystal structure copper() complex hydrogen bond
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Syntheses,Crystal Structures and Fluorescence Properties of Two Mononuclear Copper(Ⅱ) Compounds 被引量:1
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作者 陈彦国 王启英 +2 位作者 唐强 洪鹏 胡传群 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第12期1885-1893,共9页
Two new compounds,1([Cu(IDB_)2]Cl_2·2CH_3CH_2OH·2H_2O(IDB = N,N-di(2-benzimidazolylmethyl)imine]) and 2([Cu(EDTB)]·2[C_6H_4(OH)COO]·6H_2O(EDTB = N,N,N',N'-tetrakis-[(2-benzimidazoly... Two new compounds,1([Cu(IDB_)2]Cl_2·2CH_3CH_2OH·2H_2O(IDB = N,N-di(2-benzimidazolylmethyl)imine]) and 2([Cu(EDTB)]·2[C_6H_4(OH)COO]·6H_2O(EDTB = N,N,N',N'-tetrakis-[(2-benzimidazolyl)methyl]-1,2-ethanediamine]),have been synthesized and their crystal structures were determined by single-crystal X-ray diffraction. Crystal 1 belongs to the triclinic system,space group P1 with a = 9.565(2),b = 9.863(2),c = 10.252(3) ?,α = 81.915,β = 88.330,γ = 87.347°,V = 956.28(40) ?3,Z = 1,F(000) = 427,D_c = 1.419 g/cm3,Mr = 817.27 and μ(MoKα) = 0.764 mm^(-1). The final R indices(I 〉 2σ(I)): R = 0.0505,wR = 0.1417; R indices(all data): R = 0.0591,wR = 0.1525. Crystal 2 is of triclinic system,space group P1 with a = 11.487(3),b = 13.396(4),c = 17.977(5) ?,α = 73.899(5),β = 86.629(5),γ = 65.018(4)°,V = 2403.8(12) ?3,Z = 2,F(000) = 1072,D3c = 1.417 g/cm,Mr = 1025.54,μ(MoKα) = 0.528 mm^(-1). The final R indices(I 〉 2σ(I)): R = 0.0769,w R = 0.163 2; R indices(all data): R = 0.0769,wR = 0.1632. The two compounds exhibit mononuclear structures. The copper(Ⅱ) atom of crystal 1 is six-coordinated by four nitrogen atoms of benzimidazole groups and two amine nitrogen atoms from the ligand IDB to adopt a distorted octahedral coordination geometry. The copper(Ⅱ) atom of crystal 2 is six-coordinated by four nitrogen atoms of benzimidazole groups and two amine nitrogen atoms from the ligand EDTB to show a distorted octahedral coordination geometry. Particularly,the two compounds exhibit fluorescent properties at room temperature in ethanol. 展开更多
关键词 mononuclear copper compound synthesis crystal structure fluorescence
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Synthesis and Crystal Structure of a Copper(Ⅱ) Compound Constructed by N-(4,6-Dimethoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea 被引量:1
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作者 傅丁薇 宋纪蓉 +3 位作者 任莹辉 严彪 吕兴强 胡怀明 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第5期535-538,共4页
A copper(Ⅱ) complex Cu(L)2(NO3)2 constructed by the L (L = N-(4,6-dimethoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea) ligand crystallizes in monoclinic, space group C2/c with a = 16.2416(16), b = 9.1385... A copper(Ⅱ) complex Cu(L)2(NO3)2 constructed by the L (L = N-(4,6-dimethoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea) ligand crystallizes in monoclinic, space group C2/c with a = 16.2416(16), b = 9.1385(7), c = 22.0008(18) A, β = 108.077(2)°, V = 3104.3(5) A^3, Dc = 1.627 g/cm^3, Z = 4, C20H28CuN10O14S2, Mr = 760.18,μ(MoKa) = 0.920 mm^-1, F(000) = 1564, R = 0.0471 and wR = 0.1284 for 2239 observed reflections (I 〉 2σ(I)). X-ray diffraction shows the existence of weak complementary intramolecular N-H...O (DA) hydrogen bonds which further strengthen the coordination from the two L ligands with the Cu(Ⅱ) ion, intermolecular C-H...O hydrogen bonds and weak π...π stacking interactions, leading to the formation of a multi-dimensional supramolecular network. 展开更多
关键词 N-(4 6-dimethoxylpyrimidin)-N'-(ethoxyearbonyl)thiourea copper complex suprarnolecular network
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咖啡渣活性炭的制备及其去除含铜废水中Cu(Ⅱ)的性能研究
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作者 刘军 武宏 《湿法冶金》 CAS 北大核心 2024年第1期93-98,共6页
研究了采用NaOH活化焙烧咖啡渣制备咖啡渣活性炭并用于吸附去除含铜废水中的Cu(Ⅱ)。通过SEM和EDS对咖啡渣活性炭进行表征,考察了废水初始pH、Cu(Ⅱ)初始质量浓度、吸附时间、吸附剂投加量对Cu(Ⅱ)去除率的影响。结果表明:针对质量浓度5... 研究了采用NaOH活化焙烧咖啡渣制备咖啡渣活性炭并用于吸附去除含铜废水中的Cu(Ⅱ)。通过SEM和EDS对咖啡渣活性炭进行表征,考察了废水初始pH、Cu(Ⅱ)初始质量浓度、吸附时间、吸附剂投加量对Cu(Ⅱ)去除率的影响。结果表明:针对质量浓度50 mg/L、pH=6的50 mL模拟含铜废水,在咖啡渣活性炭投加量10 mg、温度25℃,搅拌速率150 r/min条件下吸附9 h, Cu(Ⅱ)去除率可达94.12%;Langmuir等温吸附模型和准二级动力学模型能较好地描述吸附过程。该吸附材料对废水中Cu(Ⅱ)的吸附性能较好。 展开更多
关键词 含铜废水 咖啡渣 活性炭 焙烧 Cu() 吸附 去除
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Synthesis Characterization Non-isothermal Kinetics of the Thermal Decomposition and Redox Properties Derived from Copper(Ⅱ) Binuclear Coordination Compound of 1,4-Bis-(1'-Phenyl-3'-Methyl-5'-Pyrazolone-4')-1,4-Butanedione
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作者 Cun SHAN Dian Zen JIA Xi XIA(Department of Chemistry,, Xinjiang University, Urumqi,830046). 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第5期455-458,共4页
The paper reports the synthetic procedure and character of Copper(II) binuclearcoordination compound of 1,4-bis-(1'-phenyl-3'-methyl-5'-pyrazolone Thenon-isothermal kinetics of thermal decomposition of the... The paper reports the synthetic procedure and character of Copper(II) binuclearcoordination compound of 1,4-bis-(1'-phenyl-3'-methyl-5'-pyrazolone Thenon-isothermal kinetics of thermal decomposition of the complex has been stUdied from the TG-DTGcurves by means of the Achar et al. and Coats-Redfern methods,the most probab1e kinetic equation canbe expressed as dofdtrAe -E / RT * l /(2Q).The corresponding kinetic compensation effect expressions arefound to be lnuA=0. 1794E+0. 1689.The non-isothermal thermal decomposition process of the complex isone-dimensional diffusion.But electrochemical studies of the complex(Cu2L'2)from cyclic voltamrnetriccurves by means of powder microelectrodes technique'',shows one two-electron irreversible process. 展开更多
关键词 Methyl-5 Phenyl-3 Pyrazolone-4 Synthesis Characterization Non-isothermal Kinetics of the Thermal Decomposition and Redox Properties Derived from copper Binuclear Coordination compound of 1 4-Bis
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可逆SCSC转变中铜(Ⅱ)配合物的可视变色:结构对颜色的影响
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作者 齐继 朱建安 +2 位作者 张延旭 杨嘉豪 张春婷 《大学化学》 CAS 2024年第3期43-57,共15页
设计了一个以单晶-单晶(SCSC)转变这种新的固相无机合成方法为核心的8学时综合化学实验。首先采用直接加成法分别合成了粉末形态与大单晶形态的绿色配合物(H_(3)O)[K(15C5)_(2)][CuCl_(4)](1),其在温度诱导下转变为红色配合物[K(15C5)_(... 设计了一个以单晶-单晶(SCSC)转变这种新的固相无机合成方法为核心的8学时综合化学实验。首先采用直接加成法分别合成了粉末形态与大单晶形态的绿色配合物(H_(3)O)[K(15C5)_(2)][CuCl_(4)](1),其在温度诱导下转变为红色配合物[K(15C5)_(2)][CuCl_(3)](2),这是由于在固相中[K(15C5)_(2)]^(+)的空间位阻效应限制了[CuCl_(3)]−的二聚。并且配合物2在盐酸蒸气诱导下经过SCSC转变恢复为配合物1。配合物1和2之间的SCSC转变也可以通过文字或图画颜色可逆变化的形式在滤纸上呈现,反应迅速,实验现象直观明显,有助于激发学习兴趣。进而,学生可以根据学过的本科无机化学中涉及的晶体场理论内容判断出两种配合物颜色的差异是因为铜(Ⅱ)的配位数不同而导致,有效地促进其将理论知识应用于实践中。通过单晶X射线衍射、粉末X射线衍射、紫外-可见光谱和傅里叶红外变换光谱等对产品进行表征,结果表明,配合物1和2晶型不同而且单晶转化完全,该过程锻炼了学生对剑桥晶体结构数据库的使用,有助于提升学生的数据分析能力和规范安全操作大型仪器的科学素养。本实验学时安排紧凑,可进行模块化教学,试剂成本低廉,适合在化学及相关专业的本科实验教学中推广。 展开更多
关键词 单晶-单晶转变 铜()配合物 空间位阻效应 晶体场理论 综合化学实验
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柱前衍生化法测定复方氨基酸注射液(18AA-Ⅱ)中氨基酸的含量
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作者 尧爱珉 葛晓莹 申兰慧 《实验室检测》 2024年第4期1-6,共6页
目的建立复方氨基酸注射液(18AA-Ⅱ)的柱前衍生化含量分析方法。方法以邻苯二甲醛联合9-芴甲基氯甲酸酯(OPA-FMOC)进行在线衍生,采用Zorbax Eclipse-AAA柱,以40 mmol/L NaH_(2)PO_(4)溶液(pH7.8)为流动相A,乙腈-甲醇-水(45:45:10)为流动... 目的建立复方氨基酸注射液(18AA-Ⅱ)的柱前衍生化含量分析方法。方法以邻苯二甲醛联合9-芴甲基氯甲酸酯(OPA-FMOC)进行在线衍生,采用Zorbax Eclipse-AAA柱,以40 mmol/L NaH_(2)PO_(4)溶液(pH7.8)为流动相A,乙腈-甲醇-水(45:45:10)为流动相B,梯度洗脱,检测波长338、262 nm,柱温40℃。结果各氨基酸之间分离度良好,线性相关系数均不小于0.9994,平均回收率99%~103%,重复性RSD均小于2%。结论该法稳定、准确、高效,可为复方氨基酸注射液的含量测定和质量评估提供参考,并首次报道了OPA-FMOC衍生分析法中赖氨酸峰面积重复性不佳的优化方法。 展开更多
关键词 氨基酸 含量测定 柱前衍生 邻苯二甲醛 9-芴甲基氯甲酸酯 复方氨基酸注射液(18AA-)
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Structure Studies on New Types of Macrocyclic Compounds Part Ⅵ. Crystal Structure of Copper(Ⅱ) Complex of 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-N', N'-diaceticacid
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作者 林玉娟 徐济德 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1996年第5期362-366,共5页
The crystal structure of copper(Ⅱ) complex with a new 14-membered tetraazamacrocyclic ligand 5,5,7,12,12,14-hexamethy1-1,4,8,11-tetraazacyclotetradecane-N'N'-diacetic acid,[CuC16N4H34(CH2COO)(CH2COOH)]·C... The crystal structure of copper(Ⅱ) complex with a new 14-membered tetraazamacrocyclic ligand 5,5,7,12,12,14-hexamethy1-1,4,8,11-tetraazacyclotetradecane-N'N'-diacetic acid,[CuC16N4H34(CH2COO)(CH2COOH)]·ClO4·0. 5HCIO4·1. 5H2O was determined. Crystallographic data: Mr = 639.22,orthorhombic, space group Pcnb with a=11.743(4),b=16.446(2),c=29.611 (4) A,Z=8,V=5726(3) A3, Dc=1.482 g·cm-3, F(000)=1344,μ=9. 64 cm-1,R=0.063,and Rw=0.067 for 2386 reflections with I≥3σ(I). The structure shows an unusual configuration in which two carboxyl groups were bonded to two neighboring nitrogen atoms of the macrocycle, N1 and N4, and six methyl substituents occur on one side of the macrocycle, while two carboxyl groups on the other side, and central copper(Ⅱ) ion forms a five-coordinated geometry. 展开更多
关键词 macrocyclic compound crystal structure copper complex
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Catalytic epoxidation of olefin over supramolecular compounds of molybdenum oxide clusters and a copper complex 被引量:3
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作者 高洪成 颜岩 +5 位作者 徐晓弘 于杰辉 牛会玲 高文秀 张文祥 贾明君 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2015年第11期1811-1817,共7页
The catalytic epoxidation of olefin was investigated on two copper complex-modified molybdenum oxides with a 3D supramolecular structure, [Cu(bipy)]4[Mo15O47].2H2O (1) and [Cu1(bix)][(Cu1bix) (δ-MoVl8O26)0.... The catalytic epoxidation of olefin was investigated on two copper complex-modified molybdenum oxides with a 3D supramolecular structure, [Cu(bipy)]4[Mo15O47].2H2O (1) and [Cu1(bix)][(Cu1bix) (δ-MoVl8O26)0.5] (2) (bipy = 4,4'-bipyridine, bix = 1,4-bis(imidazole-1-ylmethyl)benzene). Both compounds were catalytically active and stable for the epoxidation of cyclooctene, 1-octene, and styrene with tert-butyl hydroperoxide (t-BuOOH) as oxidant. The excellent catalytic performance was attributed to the presence of stable coordination bonds between the molybdenum oxide and copper complex, which resulted in the formation of easily accessible Mo species with high electropositivity. In addition, the copper complex also acted as an active site for the activation of t-BuOOH, thus im- proving these copper complex-modified polyoxometalates. 展开更多
关键词 Supramolecular compound Molybdenum oxide cluster copper complex Olefin Epoxidation
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Synthesis, crystal structure and magnetic properties of novel copper compound Cu(phen)(m-CBA)_2
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作者 周建良 霍艳 +4 位作者 王敏敏 王圆圆 古映莹 易小艺 张寿春 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第12期2660-2664,共5页
A novel compound Cu(phen)(m-CBA)2 was synthesized with m-chlorobenzoic acid(m-CBA), 1,10-phenanthroline(phen) and Cu(OAc)2·H2O. It was characterized by IR, UV, elemental analyses and X-ray crystallograp... A novel compound Cu(phen)(m-CBA)2 was synthesized with m-chlorobenzoic acid(m-CBA), 1,10-phenanthroline(phen) and Cu(OAc)2·H2O. It was characterized by IR, UV, elemental analyses and X-ray crystallography. It crystallizes in the monoclinic crystal system with C2/c space group, a=2.9699(4) nm, b=1.15452(2) nm, c=1.5335(2) nm, β=111.118(2)°, V=4.905 1(1) nm3, Z=8, F(000)=2 328, R1=0.072 8, wR2=0.223 4 [I2σ(I)]. Structure analysis shows that the copper center coordinates with two nitrogen atoms from one 1,10-phenanthroline molecule, two oxygen atoms from two m-chlorobenzoic acid molecules, giving a distorted squared planar coordination geometry. This novel compound shows paramagnetic interactions between copper centers. 展开更多
关键词 copper (II) compound conventional synthesis crystal structure magnetic properties
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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 threonine complex Diabetic mice Blood glucose Blood lipids
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2,6-二氨基嘌呤Cu(Ⅱ)金属配合物的合成、结构与性能
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作者 赵红昆 姚世博 +4 位作者 李来仪 王修光 丁波 刘忠义 李言 《天津师范大学学报(自然科学版)》 CAS 北大核心 2023年第1期10-14,共5页
采用溶剂热合成法制备了一例以2,6-二氨基嘌呤(Hdap)和硫酸根(SO_(4)^(2-))为混合配体的铜(Ⅱ)配合物[Cu(Hdap)(H_(2)O)_(2)(SO_(4))]_(n).通过单晶和粉末X-射线衍射、元素分析、红外光谱、热重分析和磁化率测试,对其结构和性能进行了表... 采用溶剂热合成法制备了一例以2,6-二氨基嘌呤(Hdap)和硫酸根(SO_(4)^(2-))为混合配体的铜(Ⅱ)配合物[Cu(Hdap)(H_(2)O)_(2)(SO_(4))]_(n).通过单晶和粉末X-射线衍射、元素分析、红外光谱、热重分析和磁化率测试,对其结构和性能进行了表征.该配合物属于正交晶系Pbcn空间群,a=1.46300(14)nm,b=1.19353(8)nm,c=1.34118(12)nm,α=90°,β=90°,γ=90°,V=2.3419(4)nm^(3),Z=8.中性的Hdap作为桥联配体,连接相邻的六配位铜(Ⅱ)离子形成一维链状结构,进一步通过N—H…O氢键拓展为二维双壁层结构,通过O—H…O氢键拓展成为三维超分子结构.硫酸根作为氢键的受体,在构筑配合物的超分子结构过程中起到至关重要的作用.磁性能测试结果表明,配合物表现为弱的反铁磁相互作用. 展开更多
关键词 2 6-二氨基嘌呤 硫酸根 铜()配合物 氢键 磁性能
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三核铜(Ⅱ)-稀土(Ⅲ)席夫碱配合物的合成、分子结构和性质
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作者 刘一夫 马方伟 《黑龙江大学工程学报(中英俄文)》 2023年第4期18-25,共8页
通过四齿铜(Ⅱ)席夫碱配合物(CuSaltn)与硝酸镧(Ⅲ)反应,合成了一系列的3d-4f异金属席夫碱配合物(CuSaltn)_(2)Ln(H_(2)O)(NO_(3))_(3)(Ln=镧(1),铈(2),镨(3),钕(4),钐(5)),其中Saltn为1,3-丙二胺缩双水杨醛席夫碱配体。对配体和配合物... 通过四齿铜(Ⅱ)席夫碱配合物(CuSaltn)与硝酸镧(Ⅲ)反应,合成了一系列的3d-4f异金属席夫碱配合物(CuSaltn)_(2)Ln(H_(2)O)(NO_(3))_(3)(Ln=镧(1),铈(2),镨(3),钕(4),钐(5)),其中Saltn为1,3-丙二胺缩双水杨醛席夫碱配体。对配体和配合物进行了元素分析、热失重、红外光谱、紫外光谱等分析表征。在室温下测定了配合物5的晶体结构,钐(Ⅲ)离子与两个双齿铜配合物、两个双齿硝酸盐离子和一个水分子形成九配位构型。形成三核铜(Ⅱ)-稀土(Ⅲ)配合物后,配合物的荧光显著降低。该类化合物的结构研究为其他类似的席夫碱配合物的研究提供有价值的信息,并且会被应用于荧光性能的研究。 展开更多
关键词 铜()-稀土(Ⅲ)配合物 席夫碱 晶体结构
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Determination of Ultratrace Amounts of Copper(Ⅱ) in Water Samples by Electrothermal Atomic Absorption Spectrometry After Cloud Point Extraction 被引量:10
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作者 CHEN Jian-guo CHEN neng-wu +2 位作者 CHEN Shao-hong LIN Li ZHONG Ying-ying 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2007年第2期143-147,共5页
A novel approach was developed for the determination of ultratrace amounts of copper in water samples by using electrothermal atomic absorption spectrometry (ETAAS) after cloud point extraction ( CPE ). 1-( 2-Pyr... A novel approach was developed for the determination of ultratrace amounts of copper in water samples by using electrothermal atomic absorption spectrometry (ETAAS) after cloud point extraction ( CPE ). 1-( 2-Pyridylazo ) -2- naphthol was used as the chelating reagent and Triton X-114 as the mieellar-forming surfactant. CPE was conducted in a pH 8. 0 medium at 40 ℃ for 10 rain. After the separation of the phases by contrifugafion, the surfactant-rieh phase was diluted with 1 mL of a methanol solution of 0. 1 mol/L HNO3. Then 20μL of the diluted surfactant-rieh phase was injected into the graphite furnace for atomization in the absence of any matrix modifier. Various experimental conditions that affect the extraction and atomization processes were optimized. A detection limit of 5 ng/L was obtained after preconeentration. The linear dynamic range of the copper mass concentration was found to be 0-2.0 ng/mL, and the relative standard deviation was found to be less than 3. 1% for a sample containing 1.0 ng/mL Cu ( Ⅱ ). This developed method was successfully applied to the determination of uhratraee amounts of Cu in drinking water, tap water, and seawater samples. 展开更多
关键词 Cloud point extraction Preconeentration Electrothermal atomic absorption spectrometry copper Water analysis
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Synthesis and Catalytic Activity of Copper(Ⅱ) Resorcylic Acid Nanoparticles 被引量:7
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作者 LI Yu LIU You-zhi 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2007年第2期217-220,共4页
Copper( Ⅱ ) resercyiic acid(CuRes) nanoparticles were synthesized by using reactive precipitation method with resorcylic acid and blue copperas as the raw material in a rotating packed bed. The sample obtained wa... Copper( Ⅱ ) resercyiic acid(CuRes) nanoparticles were synthesized by using reactive precipitation method with resorcylic acid and blue copperas as the raw material in a rotating packed bed. The sample obtained was characterized by using X-ray diffraction(XRD), transmission electron micrescopy(TEM), Fourier transform infrared spectroscopy (FTIR), thermo-gravimetric analyses (TG), and element analysis. In addition, the catalytic activity of CuRes nanoparticles on the thermal decomposition of nitrocellulose-nitroglycerine(NC-NG) was also determined via DSC. The results show that the spherical nanoparticles with a diameter of 20 nm were obtained in ethanol solution. The peak temperature of the thermal decomposition of NC-NG-CuRes decreases by 3℃ compared with that of normal CuRes, and the decomposition enthalpy is increased by 735 J/g, and therefore, it is reasonable to assume that CuRes nanoparticles have a better catalytic activity. 展开更多
关键词 Combustion catalyst Resoreylic add copper salt Reactive precipitation Rotating packed bed
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Hydrothermal Synthesis,Crystal Structure and Thermal Stability of a Binuclear Copper(Ⅱ) Complex with 3-(Pyridin-2-yl)-1,2,4-triazole 被引量:7
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作者 李昶红 谭雄文 +1 位作者 李薇 杨颖群 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第2期289-292,共4页
One novel binuclear copper(Ⅱ) complex [Cu 2 (Hpt) 2 (CO 3) 2 (H 2 O) 2 ]·H 2 O with copper carbonate and 3-(pyridin-2-yl)-1,2,4-triazole (Hpt) was hydrothermally synthesized and characterized by IR a... One novel binuclear copper(Ⅱ) complex [Cu 2 (Hpt) 2 (CO 3) 2 (H 2 O) 2 ]·H 2 O with copper carbonate and 3-(pyridin-2-yl)-1,2,4-triazole (Hpt) was hydrothermally synthesized and characterized by IR and X-ray diffraction analysis.The complex crystallizes in triclinic,space group P2 1 /n with a=0.6862(1),b=0.7805(1),c=1.1983(2) nm,α=72.03(2),β=107.72(3),γ=75.28(2)o,V=0.5884 nm 3,D c=2.105 g/cm 3,Z=1,F(000)=357,GOOF=1.041,the final R=0.01859 and wR=0.04348.The whole molecule is composed of two cooper ions,two Hpt molecules,two carbonate and three water molecules,forming a binuclear structure.The crystal structure shows that the cooper ion is coordinated with three nitrogen atoms from two Hpt molecules,two oxygen atoms from one carbonic acid and one water molecule,forming a distorted square pyramidal geometry.The TG analysis result shows that the title complex is stable under 131.0 ℃. 展开更多
关键词 copper complex hydrothermal synthesis crystal structure thermal stability analysis
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A novel spectrophotometric determination of copper(Ⅱ) with bromosulphonazoⅢ 被引量:3
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作者 Li Yuan Shu Hui Huo Xiao Na Ren Hui Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第1期92-94,共3页
A novel chromogenic reaction involving copper(Ⅱ) and bromosulphonazo Ⅲ (Br-SAZⅢ) in hexamethylenetetramine- hydrochloric buffer solution was investigated. The results showed that a blue complex of copper(Ⅱ) ... A novel chromogenic reaction involving copper(Ⅱ) and bromosulphonazo Ⅲ (Br-SAZⅢ) in hexamethylenetetramine- hydrochloric buffer solution was investigated. The results showed that a blue complex of copper(Ⅱ) and bromosulphonazo Ⅲ was formed with a molar ratio of 1:1. The apparent molar absorptivity was 3.3×10^5Lmol-1cm-1 and the maximum absorption peak was at 616.8 nm. The proposed procedure was used for quantitative estimation of Cu(II) in the concentration range of 0-1.024μg/mL with the detection limit (3σ) of 7.03 × 10^-4 μg/mL (n = 20). The relative standard deviations (RSDs) were 0.56-4.68%. Under the optimized conditions, total copper in the vegetables and tea was successfully determined. 2007 Li Yuan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 展开更多
关键词 SPECTROPHOTOMETRY Bromosulphonazo copper VEGETABLE TEA
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Crystal Structure, Electrochemical and Fluorescent Properties of a New Copper(Ⅱ) Coordination Polymer with 2,3-Pyridinedi-carboxylic Acid 被引量:3
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作者 LI Wei LIU Yang +1 位作者 LI Chang-Hong YANG Ying-Qun 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第11期1940-1946,共7页
A new copper(Ⅱ)coordination polymer[Cu5(Hpt)5(H2O)2(2,3-PCA)2]n·12nH2O(1)has been successfully synthesized under hydrothermal conditions with copper hydroxide,3-(pyridin-2-yl)-1,2,4-triazole(Hpt)and 2,3-pyridine... A new copper(Ⅱ)coordination polymer[Cu5(Hpt)5(H2O)2(2,3-PCA)2]n·12nH2O(1)has been successfully synthesized under hydrothermal conditions with copper hydroxide,3-(pyridin-2-yl)-1,2,4-triazole(Hpt)and 2,3-pyridinedi-carboxylic acid(2,3-PCA).The structure of the title compound was determined by X-ray diffraction analyses,elemental analyses and IR spectrum.The architecture of 1 consists of one-dimensional sandwich-like chains which are connected by extensive hydrogen bonding interactions.The solid-state photoluminescence displays an obvious emission band at 384 nm upon excitation at 340 nm.In addition,electrochemistry property has also been studied. 展开更多
关键词 copper()coordination polymer FLUORESCENT ELECTROCHEMICAL properties
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Synthesis,Crystal Structure and Antitumor Activity of Mixed Ligand Coordination Compound of Copper with Norfloxacin and 1,10-Phen,[Cu(NFLX)(phen)(H2O)]NO3·3H2O 被引量:2
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作者 GuoPingWANG LiChengYAN LongGuanZHU 《Chinese Chemical Letters》 SCIE CAS CSCD 2003年第11期1182-1184,共3页
The mixed ligand coordination compound of copper with norfloxacin (NFLX) and 1, 10-phen has been synthesized and characterized by means of X-ray single crystal diffraction. The structure features of the coordination ... The mixed ligand coordination compound of copper with norfloxacin (NFLX) and 1, 10-phen has been synthesized and characterized by means of X-ray single crystal diffraction. The structure features of the coordination compound are described. Antibacterial activities of the coordination compound have been tested against different microorganisms. The antitumor activities of the coordination compound on leukemia HL-60 cell line and liver cancer BEL-7402 cell line have been measured, respectively. The results indicated that the coordination compound has strong inhibitory effect on HL-60 and BEL-7402 cell lines. 展开更多
关键词 SYNTHESIS crystal structure antitumor activity NORFLOXACIN coordination compound of copper.
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