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991.
Patrycja Rogala Agnieszka Jaboska-Wawrzycka Grzegorz Czerwonka Katarzyna Kazimierczuk Katarzyna Gaczyska Sawomir Michakiewicz Justyna Kalinowska-Tucik Marta Karpiel Karel D. Klika 《Molecules (Basel, Switzerland)》2023,28(1)
Half-sandwich Ru(II) complexes belong to group of biologically active metallo-compounds with promising antimicrobial and anticancer activity. Herein, we report the synthesis and characterization of arene ruthenium complexes containing benzimidazole moiety, namely, [(η6-p-cymene)RuCl(bimCOO)] (1) and [(η6-p-cymene)RuCl2(bim)] (2) (where bimCOO = benzimidazole-2-carboxylate and bim = 1-H-benzimidazole). The compounds were characterized by 1H NMR, 13C NMR, IR, UV–vis and CV. Molecular structures of the complexes were determined by SC-XRD analysis, and the results indicated the presence of a pseudo-tetrahedral (piano stool) geometry. Interactions in the crystals of the Ru complexes using the Hirshfeld surface analysis were also examined. In addition, the biological studies of the complexes, such as antimicrobial assays (against planktonic and adherent microbes), cytotoxicity and lipophilicity, were performed. Antibacterial activity of the complexes was evaluated against S. aureus, E. coli, P. aeruginosa PAO1 and LES B58. Cytotoxic activity was tested against primary human fibroblasts and adenocarcinoma human alveolar basal epithelial cells. Obtained biological results show that the ruthenium compounds have bacteriostatic activity toward Pseudomonas aeruginosa PAO1 strain and are not toxic to normal cells. A molecular docking study was applied as a predictive source of information about the plausibility of examined structures binding with HSA as a transporting system. 相似文献
992.
Planar Pd(LH)2 complexes (LH2 = H2N C S C S N H2, CH3HNCSCSNHCH3) form mixed polymeric complexes with Ni(II), Cu(II), Zn(II) and Cd(II) in alcalic media, where the planar Pd(LH)2 complexes act as tetradentates with N-coordination. The electronic spectra and thermal behaviour are discussed, a thorough investigation of the i.r. spectra is presented and special attention has been given to the H/D, CH3/CD3 and 58Ni/62Ni, 63Cu/65Cu and 64Zn/68Zn isotopic shifts. 相似文献
993.
Ivan Pietro OliveriSanto Di Bella 《Tetrahedron》2011,67(48):9446-9449
A new fluorescent probe, based on an amphiphilic Schiff-base zinc(II) complex, 1, for the sensitive detection of some important classes of alkaloids is presented. It exhibits optical absorption changes and fluorescence enhancement upon formation of 1:1 1·alkaloid adducts. Four diverse classes of alkaloids, represented by their basic structures and related representative prototypes, are investigated, through the study of optical and binding properties of 1·alkaloid adducts. It is found that the chromogenic and fluorogenic complex 1 is selective between these classes of alkaloids in the micromolar range, with a limit of quantification of 0.40 μM for nicotine and 0.43 μM for cinchonine. 相似文献
994.
《Analytical letters》2012,45(2):445-456
Abstract The ternary complexes of copper (II) with glycine, alanine, aspartate or glutamate as primary ligand and pyruvate as secondary ligand have been investigated using differential pulse polarography. the reversible diffusion controlled reduction of the complexed ion reveals two mixed complexes to be formed with stoichiometries 1:1:1 and 1:2:1. Their overall formation constants in a sodium perchlorate supporting electrolyte have been calculated at μ =0.1 and 25°C. 相似文献
995.
Takashi Tsuno Yu Sugiyama Henri Brunner Michael Bodensteiner Kosei Lee 《Journal of Coordination Chemistry》2017,70(20):3459-3470
Treatment of NiCl2 with the tripod ligand (LMent,SC)-1H led to (LMent,SC)-[Cp(PNMent)NiCl] in which the potentially tridentate ligand coordinated to the metal center in a bidentate way via the cyclopentadienyl system and the phosphorus atom. In the presence of NH4PF6 [(LMent,SC)-[Cp(PNMent)NiCl] readily underwent Cl/PPh3 exchange to give (LMent,SC)-[Cp(PNMent)NiPPh3]PF6. Reaction of (LMent,SC)-[Cp(PNMent)NiCl] with 0.5 eq. of dppe afforded [{(LMent,SC)-[Cp(PNMent)Ni]}2dppe](PF6)2. (LMent,SC)-[Cp(PNMent)NiPPh3]PF6 and [{(LMent,SC)-[Cp(PNMent)Ni]}2dppe](PF6)2 were characterized by NMR and MS spectroscopy, and also by single crystal X-ray diffraction. The cyclopentadienyl ligand of (LMent,SC)-[Cp(PNMent)NiPPh3]PF6 shows a distortion intermediate between the ene-allyl and diene types, while the two cyclopentadienyl ligands of [{(LMent,SC)-[Cp(PNMent)Ni]}2dppe](PF6)2 have intermediate and diene distortions, respectively. According to the temperature dependent NMR spectra of (LMent,SC)-[Cp(PNMent)NiPPh3]PF6 and [{(LMent,SC)-[Cp(PNMent)Ni]}2dppe](PF6)2 two different conformations of the tether in the Cp(PNMent)Ni system could be frozen out at low temperatures. 相似文献
996.
Petrov P. A. Tret"yakov E. V. Romanenko G. V. Ovcharenko V. I. Sagdeev R. Z. 《Russian Chemical Bulletin》2004,53(1):109-113
The reaction of CuCl2 with deprotonated 2-(2-hydroxy-3-nitrophenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-1-oxyl 3-oxide afforded a bis-chelate complex containing seven-membered metallocycles. 相似文献
997.
998.
Halogeno Metallates of Transition Elements with Cations of Nitrogen‐containing Heterocyclic Bases. VIII Syntheses and Crystal Structures of Novel Bromoferrates(III), Chloro‐, and Aquachloroferrates(III) with Tetrahedral and Octahedral Iron Coordination, among them two Neutral Complexes of Iron(II) and (III) (dmpipzH2)[FeIIIBr4]2 ( 1 ), (trienH2)[FeIIIBr4]Br ( 2 ), (dmpipzH2)[FeIIICl4]Cl ( 3 ), (dmpipzH2)2[FeIII(H2O)2Cl4][FeIIICl4]Cl2 ( 4 ), and (trienH2)[FeIII(H2O)3Cl3]Cl2 ( 5 ) crystallize from aqueous mineralic acid solutions of iron(II) halide and the organic bases (1,4‐dimethylpiperazine or triethylenediammine) in the presence of atmospheric oxygen whereas (dmpipzH2)[FeCl4(H2O)6]Cl2 ( 6 ) was obtained under the exclusion of air. 1 , 2 , and 3 contain the known tetrahedral halogeno complexes, 4 contains a novel octahedral iron(III) complex, and in 6 a neutral binuclear iron(II) complex has been found which has not been described before. The crystal structures and the hydrogen bridging systems of the complexes are described. 相似文献
999.
LI Hao-Honga CHEN Zhi-Ronga② REN Yong-Gang LI Jun-Qiana b HUANG Chang-Canga ZHAO Bina a 《结构化学》2005,(12)
1 INTRODUCTION terested in the unique effects associated with substituents at 4- and 7-positions of the phenan- The coordination chemistry of 1,l0-phenanthroline throline ring. Thus, when phenyl groups are present, and its derivatives has captured the attention of che- the absorptivities of the CT transitions are increased mists for years. The reports on biological importance[1~4], markedly due to the extension of the dipole moment supramolecular chemistry[5], electronic spectra[6], conne… 相似文献
1000.
钕、钐-邻苯二甲酸-1,10-邻菲咯啉配合物的合成及谱学性质 总被引:14,自引:0,他引:14
合成了稀土钕、钐的邻苯二甲酸 1,10 邻菲咯啉二元、三元配合物 ,通过元素分析、1HNMR、中红外光谱、差热 热重分析 ,确定了配合物的组成为RE2 L3 ·2H2 O ,RE2 L3 phen·2H2 O(RE :稀土离子 ,L :邻苯二甲酸根 ,phen :1,10 邻菲咯啉 ) ,讨论了配合物的谱学性质 ,并对配合物的远红外光谱、拉曼光谱进行了归属研究。 相似文献