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1.
LI Yana b WU A-Qinga b ZHENG Fa-Kuna② GUO Guo-Conga② LU Can-Zhonga HUANG Jin-Shuna a 《结构化学》2005,(11)
1 INTRODUCTION Exploration on the syntheses and properties of car- boxylate complexes, especially aromatic carboxylate complexes, has always been a fascinating and chal- lenging research field for decades either in coor- dination chemistry or in functional materials[1, 2]. Cy- anobenzoic acid (Hcba) possessing two functional coordination groups should display structural diver- sities on the formation of complexes[3~15]. In particu- lar, the copper(II) carboxylate complexes bearing spe- … 相似文献
2.
M. L. Petrov E. A. Popova M. N. Krivchun A. V. Belyakov 《Russian Journal of General Chemistry》2020,90(5):858-862
The cyclization of (2-bromophenyl)thioacetic acid morpholide to
2-(morpholin-4-yl)-1-benzothiophene in the presence of copper(II) chloride has
been found to involve intermediate formation of a complex consisting of two
thioamide molecules and one copper cation. The complex has been isolated, and
its molecular structure parameters have been determined by quantum chemical
calculations. 相似文献
3.
Bolotin S. N. Frolov V. Yu. Panyushkin V. T. 《Russian Journal of General Chemistry》2004,74(2):219-221
Complex formation of copper(II) ions with the galactarate ion [Gala]2
- in aqueous solution was studied by means of potentiometric titration. Stability constants of the [CuGala] and [Cu(Gala)2]2
- complexes were determined. A complex compound was synthesized electrochemically and isolated from a DMSO solution containing a copper(II) salt and galactaric acid, and its composition was determined. The structure of the complex was determined by ESR. 相似文献
4.
A new complex [Cu(phen)3][(C6H5)2C(OH)COO]2·6H2O was prepared by self-assembly of benzilic acid, 1,10-phenanthroline (phen), and copper perchlorate. It crystallizes in triclinic, space group P1, with a = 1.14661(17), b = 1.6455(2), c = 1.6457(2) nm, α = 74.779(2), β = 74.904(3), γ = 84.424(3)o, V = 2.8914(7) nm3, Dc = 1.340 g/cm3, Z = 2, F(000) = 1218, GOOF = 1.018, the final R = 0.0643 and wR = 0.1633. The crystal structure shows that the copper ion is coordinated with six nitrogen atoms from six 1,10-phenanthroline molecules, forming a distorted octahedral coordination geometry. 相似文献
5.
1 INTRODUCTION The picoloylhydrazide compounds are close to thebiologic environment and can react with microele-ments in organism so as to have antitubercular andantineoplastic activities. However, owing to the exis-tence of amino group, this kind of compounds aretoxic to some extent[1]. In order to decrease theirtoxicity, hydrazone or hydrazide compounds synthe-sized by the condensation reaction of amino and car-bonyl groups have been well studied in recentyears[1~7]. Herein we report t… 相似文献
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7.
《Analytical letters》2012,45(16):1431-1439
Abstract Crown ether-potassium ion complex extracts selectively copper-zincon anion complex as ion-pairs into chloroform phase in the presence of copper-zincon and zinc-zincon chelate anion, whereas quarternary ammonium ion extracts both anions. By measuring the absorbance of the chloroform phase at 615 nm, copper in the presence of zinc has been determined spectrophotometrically. The composition of extracted species was estimated to be Cu2+-zincon4?-(KL+)2. 相似文献
8.
L. N. Mazalov S. V. Trubina E. S. Fomin I. M. Oglezneva G. K. Parygina N. V. Bausk I. K. Igumenov 《Journal of Structural Chemistry》2004,45(5):800-807
The Cu(acac)2 complex was investigated by X-ray emission and XANES spectroscopy using synchrotron radiation. Structural data for the complex were obtained in chloroform solution and C2F matrix. The experimental spectra and their fitting on a single scale of binding energies point to possible relaxation effects. As shown by model quantum-chemical calculations, the structure and energy position of the LUMOs constructed from the vacant metal 4p, 5p AOs strongly depends on the nature of the nearest environment.Original Russian Text Copyright © 2004 by L. N. Mazalov, S. V. Trubina, E. S. Fomin, I. M. Oglezneva, G. K. Parygina, N. V. Bausk, and I. K. Igumenov__________Translated from Zhurnal Strukturnoi Khimii, Vol. 45, No. 5, pp. 844–851, September–October, 2004. 相似文献
9.
Evstratova S. I. Shilov G. V. Dzhardimalieva G. I. Pomogailo A. D. Uflyand I. E. Aldoshin S. M. 《Russian Journal of Coordination Chemistry》2001,27(10):735-737
The molecular structure of a copper(II) nitrate complex with acrylamide (AA), Cu(NO3)2· 4(CH2=CHC(O)NH2), was determined using X-ray diffraction analysis. The coordination of AA involves the carbonyl O atom (Cu–O 1.952–1.958 Å). The X-ray study revealed the structural features of the compound that determine its chemical properties and prevent its frontal polymerization. 相似文献
10.
Nayara Júnia de Souza Bontempo Drielly Aparecida Paixo Paula Marynella Alves Pereira Lima Deysse Carla Tolentino Barros Dayanne Silva Borges Priscila Capelari Orsolin Isabella Castro Martins Pedro Henrique Alves Machado Ricardo Campos Lino Tiago Rodrigues de Souza Luana Munique Sousa Ramos Samuel Cota Teixeira Raoni Pais Siqueira Luiz Ricardo Goulart Filho Wendell Guerra Robson Jos de Oliveira Júnior Thaise Gonalves de Araújo 《Molecules (Basel, Switzerland)》2022,27(20)
Prostate Cancer (PCa) is the second leading cause of cancer-related deaths among men worldwide. The treatment of advanced cases is based on chemotherapy, which lacks specificity and efficacy, due to severe side effects and resistance to the traditional drugs. Copper complexes have shown antitumoral efficacy and low toxicity, being considered a promising class of metal-based drugs for the treatment of malignant neoplasms. Thus, the present study aimed to evaluate the cellular effects of a copper(II) complex with 4-fluorophenoxyacetic acid hydrazide and 1,10-phenanthroline (1) on PCa cell lines, as well as the mutagenic/recombinogenic and anticarcinogenic potential of 1 in Drosophila melanogaster. PNT-2 (non-tumorigenic), LNCaP (hormone-responsive PCa) and PC-3 (androgen-independent PCa) cells were cultured, and cytotoxicity was assessed using the MTT assay. The expression levels of the proliferation markers Ki-67 and Cyclin D1 were analyzed by flow cytometry. Furthermore, the Somatic Mutation and Recombination Test (SMART) and the Epithelial Tumor Test (ETT) were performed. Complex 1 was selective to LNCaP cells, significantly reducing Ki-67 and Cyclin D1 expression levels. Sub-toxic concentrations of complex 1 were defined by the toxicity test in D. melanogaster, and no mutagenic/recombinogenic/carcinogenic effects were observed. Anticarcinogenic potential was observed in D. melanogaster, suggesting modulating activity of the complex 1 against Doxorubicin, a drug used as control by its carcinogenic properties. Therefore, complex 1 is a possible starting point for the development of new antitumor agents for the treatment of PCa. 相似文献
11.
Jean-Claude C. Bünzil Jean-Marc Pfefferl Bruno Ammann Gervais Chapuis F.-Javier Zuniga 《Helvetica chimica acta》1984,67(4):1121-1127
The crystal and molecular structure of [La(NO3)3]4(C12H26O5)3 has been determined from low-temperature single-crystal X-ray diffraction data. The complex crystallizes in the monoclinic space group I2 with Z = 2. Lattice parameters at 150 K are a = 12.234 (6) Å, b = 11.105 (5), c = 26.613 (9), β = 90.65 (4)°. The structure was solved by Patterson and Fourier techniques and refined to a conventional RF-value of 0.068. The compound contains three dinitrato complex cations [La(NO3)2C12H26O6]+ with 10-coordinate lanthanum ions and one hexanitrato anion, [La(NO3)6]3?, with a 12-coordinate La(III)-ion. One complex cation has a C2-symmetry while the two others, which are crystallographically equivalent, have no symmetry and contain a disordered ligand molecule. The polyther adopts a ring-like conformation in all the complex moietis. The La? O(nitrate) distances lie in the ranges 2.52–2.53 and 2.49–2.62 Å, with average values of 2.53 (7) and 2.56 (6) Å, respectively, fo the species with C2- and C1-symmetry; the La? O(ether) bond lengths lie int he range 2.54–2.79 Å (average: 2.6 (1)) for the C2-moiety and their mean value amounts to 2.6 (2) for the disordered species. The hexanitrate has a C2-symmetry and the La? O distances range between 2.56 and 2.67 Å with an average value fo 2.64 (4) Å. The effective ionic radii of the 10- and 12-coordinate La(III) ions are estimated as 1.28 and 1.33 Å, respectively. 相似文献
12.
1INTRODUCTION Chelidamic acid(2,6-dicarboxy-4-hydroxypyri-dine),an emblematical polydentate ligand,has been of great attraction due to its usage in many areas of science,such as coordinate chemistry,biochemis-try,organic chemistry,medical chemistry and even in HIV investigation[1].More and more metal com-plexes containing chelidamic acid ligands have been reported,which play a significant role in de-signing the molecules and extending chemistry of chelidamic acid[2].In our previous paper… 相似文献
13.
The crystal structure of the binuclear Cu(II) complex [Cu(flu)2DMF]2 (flu = deprotonated N-3-trifluromethylphenylanthranilic acid: DMF = dimethylformamide) has been solved by single crystal X-ray diffractometry. It crystallizes in the monoclinic space group P21/c with Z = 2. The infrared and electronic spectra of the compound are also briefly discussed. 相似文献
14.
Yu. P. Tupolova I. N. Shcherbakov V. V. Tkachev L. D. Popov S. I. Levchenkov V. A. Chetverikova G. V. Shilov S. M. Aldoshin 《Russian Journal of Coordination Chemistry》2018,44(2):132-137
A new coordination polymer of Cu(II) based on 1-phenyl-3-methyl-4-formyl-5-hydroxypyrazole 4,6-dimethylpyrimidylhydrazone is synthesized. The polymer is studied by X-ray diffraction analysis (CIF file CCDC no. 1565772). It is shown that the polymer is formed due to the coordination of the nitrogen atom of the pyrazolone fragment to the copper(II) ion of the adjacent monomeric fragment. 相似文献
15.
《Journal of Coordination Chemistry》2012,65(6):675-680
A neutral mononuclear complex [Cu(cbIm)4(NO3)2] (cbIm = 4'-cyanobenzyl-1-imidazol) was synthesized and characterized by x-ray crystallography. It crystallizes in the triclinic space group P-1 with a = 8.249(2), b = 8.735(2), c = 16.597(2) Å, f = 81.980(10), g = 88.540(10), n = 63.570(10)° and Z = 2. The final refinement of the structure leads to R and Rw of 0.0394 and 0.0991, respectively. The crystal structure of the complex indicates a distorted octahedral environment around the Cu(II) atom, coordinated by four imidazole N atoms of four cbIm and two O atoms of two nitrates. Magnetic measurements show that the complex exhibits Curie behavior. 相似文献
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17.
1 INTRODUCTION1 ,1 0 Phenanthroline 5,6 dione (L)carriesano quinonemoietywithpH depen dentelectroactivityandcanformstablecomplexeswithawidevarietyofmetalions,andthesolutionchemistryandelectrochemistryofitstransitionmetalcomplexeshavebeenextensivelystudied[1,2 ].H… 相似文献
18.
铜〔Ⅱ)与咪唑及2-羰基丙酸水杨酰腙混配体配合物的合成、晶体结构及热分解研究 总被引:1,自引:0,他引:1
以2-碳基丙酸水杨酰腙、咪唑与五水硫酸铜在水中反应,首次制得混配体配合 物Cu(C10H8N2O4)(C3H4N2)(H2O)[C10H8N2O4^2-为2-羰基丙酸水杨酰腙负离子 ;C3H4N2为咪唑],并在甲醇溶剂中培养出单晶.该单晶为深绿色,属单斜晶系, 空间群为P2(1)/c,晶胞参数a=1.50583(5)nm,b=1.08411(3)nm,c=0.94366(2)nm, α=90°,β=101.5583(11)°,γ=90°,V=1.50927(7)nm^3,Z=4,μ=1.479mm^-1, Dc=1.628Mg/m^3,F(000)=756.00,R=0.0340,ωR=0.0777,GOF=1.025。晶体测试结果 表明,配合物中Cu(Ⅱ)的配位数为5,处于四方锥配位环境,其中配体2—羰基丙酸 水杨酰腙的羧基以单齿配位.腙基上C≡N的N配位以及碳基(C≡0)的0配位,咪唑的 3位N参与了配位,这四个配位原子处于四方锥的锥底,另一个配位原子来自H20中 的0,它处于四方锥的锥顶.在晶胞中,除分子内存在氢键外,分子间也存在氢键 .根据TG-DTG曲线研究了配合物的热分解过程,利用Kissinger公式计算了配合物 主要分解阶段的表观活化能. 相似文献
19.
Crystal structure of copper (II) complex with a new aminocarboxylate ligand, 3-hydroxyl-1, 5-diazacycloheptane-N,N-diacetate, C9H14CuN2O5.H2O, Mr=311.78 is reported. It crystallizes in orthorhombic Pna21 with a=13.340(4), b=8.127(1), c=10.583(4) , V=1147.2(7)3 , Z=4, Dc=1.805g/cm3, μ=19.287cm-1 (MoKα), F(000)=644. The final R and Rw are 0.049 and 0.065 for 888 observed reflections with I≥3σ(I). The result of X-ray structure determination shows that the Cu(Ⅱ) forms a planar complex with two oxygen atoms and two nitrogen atoms of the ligand. 相似文献
20.
以大环铜配合物[CuL](ClO4)2(L=5,7,7,12,14,14-六甲基-1,4,8,11-四氮杂环十四-4,11-二烯)与NH4VO3反应合成了一个新的钒氧多酸桥联大环铜配合物[CuL]2[H2V10O28]·7H2O(1),其结构经IR,元素分析和X-射线单晶衍射表征。1(CCDC: 1510831)属单斜晶系,P2(1)/n空间群,晶胞参数a=11.512(3) , b=18.170(4) , c=14.534(3) , β=102.997(4)°, V=2 962.3(11) 3, Dc=1.986 mg·cm-3, Z=2, μ=2.300 mm-1, R1=0.047 2, wR2=0.118 2。 相似文献