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Mubarak A, Abu Ali H, Metani M. Two novel Cu (II) levofloxacin complexes with different bioactive nitrogen‐based ligands; single‐crystal X‐ray and various biological activities determinations. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Asem Mubarak
- Department of Chemistry Birzeit University Birzeit Palestine
| | - Hijazi Abu Ali
- Department of Chemistry Birzeit University Birzeit Palestine
| | - Munther Metani
- Department of Biology and Biochemistry Birzeit University Birzeit Palestine
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2
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Chrysouli MP, Banti CN, Kourkoumelis N, Moushi EE, Tasiopoulos AJ, Douvalis A, Papachristodoulou C, Hatzidimitriou AG, Bakas T, Hadjikakou SK. Ciprofloxacin conjugated to diphenyltin(IV): a novel formulation with enhanced antimicrobial activity. Dalton Trans 2021; 49:11522-11535. [PMID: 32656556 DOI: 10.1039/d0dt01665a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The metalloantibiotic of formula Ph2Sn(CIP)2 (CIPTIN) (HCIP = ciprofloxacin) was synthesized by reacting ciprofloxacin hydrochloride (HCIP·HCl) (an antibiotic in clinical use) with diphenyltin dichloride (Ph2SnCl2DPTD). The complex was characterized in the solid state by melting point, FT-IR, X-ray Powder Diffraction (XRPD) analysis, 119Sn Mössbauer spectroscopy, X-ray Fluorescence (XRF) spectroscopy, and Thermogravimetry/Differential Thermal Analysis (TG-DTA) and in solution by UV-Vis, 1H NMR spectroscopic techniques and Electrospray Ionisation Mass Spectrometry (ESI-MS). The crystal structure of CIPTIN and its processor HCIP was also determined by X-ray crystallography. The antibacterial activity of CIPTIN, HCIP·HCl, HCIP and DPTD was evaluated against the bacterial species Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Staphylococcus epidermidis (S. epidermidis), by the means of Minimum Inhibitory Concentration (MIC), Minimum Bactericidal Concentration (MBC) and Inhibition Zones (IZs). CIPTIN shows lower MIC values than those of HCIP·HCl (up to 4.2-fold), HCIP (up to 2.7-fold) or DPTD (>135-fold), towards the tested microbes. CIPTIN is classified into bactericidal agents according to MBC/MIC values. The developing IZs are 40.8 ± 1.5, 34.0 ± 0.8, 36.0 ± 1.1 and 42.7 ± 0.8 mm, respectively which classify the microbes P. aeruginosa, E. coli, S. aureus and S. epidermidis to susceptible ones to CIPTIN. These IZs are greater than the corresponding ones of HCIP·HCl by 1.1 to 1.5-fold against both the tested Gram negative and Gram positive bacteria. CIPTIN eradicates the biofilm of P. aeruginosa and S. aureus more efficiently than HCIP·HCl and HCIP. The in vitro toxicity and genotoxicity of CIPTIN were tested against human skin keratinocyte cells (HaCaT) (IC50 = 2.33 μM). CIPTIN exhibits 2 to 9-fold lower MIC values than its IC50 against HaCaT, while its genotoxic effect determined by micronucleus assay is equivalent to the corresponding ones of HCIP·HCl or HCIP.
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Affiliation(s)
- M P Chrysouli
- Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - C N Banti
- Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
| | - N Kourkoumelis
- Medical Physics Laboratory, Medical School, University of Ioannina, Ioannina, Greece
| | - E E Moushi
- Department of Life Sciences, The School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - A J Tasiopoulos
- Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus
| | - A Douvalis
- Mössbauer Spectroscopy and Physics of Material Laboratory, Department of Physics, University of Ioannina, Ioannina, Greece
| | | | - A G Hatzidimitriou
- Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - T Bakas
- Mössbauer Spectroscopy and Physics of Material Laboratory, Department of Physics, University of Ioannina, Ioannina, Greece
| | - S K Hadjikakou
- Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece. and University Research Center of Ioannina (URCI), Institute of Materials Science and Computing, Ioannina, Greece
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3
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Kleemiss F, Wieduwilt EK, Hupf E, Shi MW, Stewart SG, Jayatilaka D, Turner MJ, Sugimoto K, Nishibori E, Schirmeister T, Schmidt TC, Engels B, Grabowsky S. Similarities and Differences between Crystal and Enzyme Environmental Effects on the Electron Density of Drug Molecules. Chemistry 2021; 27:3407-3419. [PMID: 33090581 PMCID: PMC7898524 DOI: 10.1002/chem.202003978] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Indexed: 01/28/2023]
Abstract
The crystal interaction density is generally assumed to be a suitable measure of the polarization of a low-molecular weight ligand inside an enzyme, but this approximation has seldomly been tested and has never been quantified before. In this study, we compare the crystal interaction density and the interaction electrostatic potential for a model compound of loxistatin acid (E64c) with those inside cathepsin B, in solution, and in vacuum. We apply QM/MM calculations and experimental quantum crystallography to show that the crystal interaction density is indeed very similar to the enzyme interaction density. Less than 0.1 e are shifted between these two environments in total. However, this difference has non-negligible consequences for derived properties.
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Affiliation(s)
- Florian Kleemiss
- Department 2 – Biology/Chemistry, Institute of Inorganic Chemistry and CrystallographyUniversity of BremenLeobener Str. 3 and 7, 28359 BremenGermany
- Department of Chemistry and BiochemistryUniversity of BernFreiestrasse 3, 3012 BernSwitzerland
| | - Erna K. Wieduwilt
- Department 2 – Biology/Chemistry, Institute of Inorganic Chemistry and CrystallographyUniversity of BremenLeobener Str. 3 and 7, 28359 BremenGermany
- Laboratoire de Physique et Chimie Théoriques (LPCT), UMR CNRS 7019Université de Lorraine & CNRSBoulevard Arago, 57078 MetzFrance
| | - Emanuel Hupf
- Department 2 – Biology/Chemistry, Institute of Inorganic Chemistry and CrystallographyUniversity of BremenLeobener Str. 3 and 7, 28359 BremenGermany
| | - Ming W. Shi
- School of Molecular SciencesUniversity of Western Australia35 Stirling Highway, Perth WA 6009Australia
| | - Scott G. Stewart
- School of Molecular SciencesUniversity of Western Australia35 Stirling Highway, Perth WA 6009Australia
| | - Dylan Jayatilaka
- School of Molecular SciencesUniversity of Western Australia35 Stirling Highway, Perth WA 6009Australia
| | - Michael J. Turner
- School of Molecular SciencesUniversity of Western Australia35 Stirling Highway, Perth WA 6009Australia
| | - Kunihisa Sugimoto
- Japan Synchrotron Radiation Research InstituteSPring-81-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198Japan
- Institute for Integrated Cell-Materials SciencesKyoto UniversityYoshida-Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501Japan
| | - Eiji Nishibori
- Division of Physics, Faculty of Pure and Applied Sciences, Tsukuba Research Center for Energy Materials ScienceUniversity of TsukubaTsukubaJapan
| | - Tanja Schirmeister
- Institute of Pharmaceutical and Biomedical SciencesJohannes-Gutenberg University MainzStaudingerweg 5, 55128 MainzGermany
| | - Thomas C. Schmidt
- Institute for Physical and Theoretical ChemistryJulius-Maximilians-University WürzburgEmil-Fischer-Str. 42, 97074 WürzburgGermany
| | - Bernd Engels
- Institute for Physical and Theoretical ChemistryJulius-Maximilians-University WürzburgEmil-Fischer-Str. 42, 97074 WürzburgGermany
| | - Simon Grabowsky
- Department 2 – Biology/Chemistry, Institute of Inorganic Chemistry and CrystallographyUniversity of BremenLeobener Str. 3 and 7, 28359 BremenGermany
- Department of Chemistry and BiochemistryUniversity of BernFreiestrasse 3, 3012 BernSwitzerland
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4
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Puri SR, Kim J. Kinetics of Antimicrobial Drug Ion Transfer at a Water/Oil Interface Studied by Nanopipet Voltammetry. Anal Chem 2019; 91:1873-1879. [DOI: 10.1021/acs.analchem.8b03593] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Surendra Raj Puri
- Department of Chemistry, The University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Jiyeon Kim
- Department of Chemistry, The University of Rhode Island, Kingston, Rhode Island 02881, United States
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5
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Kumar M, Kumar G, Dadure KM, Masram DT. Copper(ii) complexes based on levofloxacin and 2N-donor ligands: synthesis, crystal structures and in vitro biological evaluation. NEW J CHEM 2019. [DOI: 10.1039/c9nj03178b] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The molecular structures and in vitro biological applications of two cationic copper(ii) complexes are reported.
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Affiliation(s)
- Manish Kumar
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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6
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Charge density studies of an inorganic-organic hybrid p-phenylenediammonium tetrachlorocuprate. Struct Chem 2017. [DOI: 10.1007/s11224-017-0969-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Kucková L, Bučinský L, Kožíšek J. Copper atom representation in charge density analysis of (5-chlorosalicylate)-(2,9-dimethylphenanthroline)-(aqua) copper complex: Experimental and theoretical study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Shi MW, Stewart SG, Sobolev AN, Dittrich B, Schirmeister T, Luger P, Hesse M, Chen Y, Spackman PR, Spackman MA, Grabowsky S. Approaching an experimental electron density model of the biologically active
trans
‐epoxysuccinyl amide group—Substituent effects vs. crystal packing. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3683] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ming W. Shi
- School of Chemistry and Biochemistry The University of Western Australia Perth WA Australia
| | - Scott G. Stewart
- School of Chemistry and Biochemistry The University of Western Australia Perth WA Australia
| | - Alexandre N. Sobolev
- School of Chemistry and Biochemistry The University of Western Australia Perth WA Australia
| | - Birger Dittrich
- Anorganische Chemie und Strukturchemie Heinrich‐Heine‐Universität Düsseldorf Düsseldorf Germany
| | - Tanja Schirmeister
- Institut für Pharmazie und Biochemie Johannes‐Gutenberg‐Universität Mainz Mainz Germany
| | - Peter Luger
- Institut für Chemie und Biochemie, Anorganische Chemie Freie Universität Berlin Berlin Germany
| | - Malte Hesse
- Fachbereich 2—Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie Universität Bremen Bremen Germany
| | - Yu‐Sheng Chen
- ChemMatCARS The University of Chicago Argonne IL USA
| | - Peter R. Spackman
- School of Chemistry and Biochemistry The University of Western Australia Perth WA Australia
| | - Mark A. Spackman
- School of Chemistry and Biochemistry The University of Western Australia Perth WA Australia
| | - Simon Grabowsky
- School of Chemistry and Biochemistry The University of Western Australia Perth WA Australia
- Fachbereich 2—Biologie/Chemie, Institut für Anorganische Chemie und Kristallographie Universität Bremen Bremen Germany
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Lecina J, Cortés P, Llagostera M, Piera C, Suades J. New rhenium complexes with ciprofloxacin as useful models for understanding the properties of [99mTc]-ciprofloxacin radiopharmaceutical. Bioorg Med Chem 2014; 22:3262-9. [DOI: 10.1016/j.bmc.2014.04.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 04/28/2014] [Indexed: 11/15/2022]
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11
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Lyssenko KA, Vologzhanina AV, Torubaev YV, Nelyubina YV. A comparative study of a mixed-ligand copper(II) complex by the theory of atoms in molecules and the Voronoi tessellation. MENDELEEV COMMUNICATIONS 2014. [DOI: 10.1016/j.mencom.2014.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Grabowsky S, Jayatilaka D, Fink RF, Schirmeister T, Engels B. Can Experimental Electron-Density Studies be Used as a Tool to Predict Biologically Relevant Properties of Low-Molecular Weight Enzyme Ligands? Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201200518] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Different types of copper complexes with the quinolone antimicrobial drugs ofloxacin and norfloxacin: structure, DNA- and albumin-binding. J Inorg Biochem 2012; 117:35-47. [PMID: 23078773 DOI: 10.1016/j.jinorgbio.2012.08.008] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 06/21/2012] [Accepted: 08/17/2012] [Indexed: 11/23/2022]
Abstract
Three novel copper(II) complexes with the second-generation quinolone antibacterial agents norfloxacin (nfH) and ofloxacin (ofloH) have been synthesized resulting in the complexes [Cu(nfH)(phen)Cl]Cl·5H(2)O (1·5H(2)O), [Cu(nfH)(2)]Cl(2)·6H(2)O (2·6H(2)O) and [Cu(II)(ofloH)(2)][(Cu(I)Cl(2))(2)] (3), respectively. The crystal structures of the complexes have been determined by X-ray crystallography revealing that the quinolones act as bidentate ligands coordinated to Cu(II) atom through the pyridone oxygen and a carboxylato oxygen. UV study of the interaction of the quinolones and the complexes with calf-thymus DNA (CT DNA) has shown that they can bind to CT DNA with [Cu(II)(ofloxacin)(2)][(Cu(I)Cl(2))(2)] exhibiting the highest binding constant to CT DNA. The cyclic voltammograms of the complexes in the presence of CT DNA solution have shown that the interaction of the complexes with CT DNA is mainly through electrostatic binding. DNA solution viscosity measurements have shown that the interaction of the compounds with CT DNA by classical intercalation may be ruled out. Competitive studies with ethidium bromide (EB) indicate that the complexes can partially displace the DNA-bound EB suggesting low to moderate competition with EB. Norfloxacin, ofloxacin and their copper complexes exhibit good binding propensity to human or bovine serum albumin protein having relatively high binding constant values.
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14
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Tanimoto MK, Dias K, Dovidauskas S, Nikolaou S. Tuning the reaction products of ruthenium and ciprofloxacin for studies of DNA interactions. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.675434] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Márcia Kiyoko Tanimoto
- a Departamento de Física e Química da Faculdade de Ciências Farmacêuticas de Ribeirão Preto , University of São Paulo , Av. do Café s/n, 14040-903, Ribeirão Preto, São Paulo , Brazil
| | - Karina Dias
- a Departamento de Física e Química da Faculdade de Ciências Farmacêuticas de Ribeirão Preto , University of São Paulo , Av. do Café s/n, 14040-903, Ribeirão Preto, São Paulo , Brazil
| | - Sérgio Dovidauskas
- b Instituto Adolfo Lutz , R. Minas 877, 14085-410, Ribeirão Preto, São Paulo , Brazil
| | - Sofia Nikolaou
- a Departamento de Física e Química da Faculdade de Ciências Farmacêuticas de Ribeirão Preto , University of São Paulo , Av. do Café s/n, 14040-903, Ribeirão Preto, São Paulo , Brazil
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15
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Chalkidou E, Perdih F, Turel I, Kessissoglou DP, Psomas G. Copper(II) complexes with antimicrobial drug flumequine: structure and biological evaluation. J Inorg Biochem 2012; 113:55-65. [PMID: 22694822 DOI: 10.1016/j.jinorgbio.2012.03.005] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 02/03/2012] [Accepted: 03/09/2012] [Indexed: 01/23/2023]
Abstract
The copper(II) complexes with the first-generation quinolone antibacterial agent flumequine(Hflmq) in the presence or absence of the nitrogen donor heterocyclic ligands 2,2'-bipyridylamine(bipyam), 2,2'-bipyridine(bipy), 1,10-phenanthroline(phen) or pyridine(py) have been synthesized and characterized. Flumequine acts as bidentate ligand coordinated to Cu(II) atom through the pyridone oxygen and a carboxylato oxygen. The crystal structures of the complexes [Cu(flmq)(bipyam)Cl], [Cu(flmq)(bipy)Cl] and [Cu(flmq)(phen)Cl] have been determined by X-ray crystallography revealing a distorted square pyramidal geometry for Cu(II) atom. The interaction of the complexes with bovine or human serum albumin proteins has been studied by fluorescence spectroscopy revealing their good binding propensity to the proteins with relatively high binding constant values. UV study of the interaction of the complexes with calf-thymus DNA (CT DNA) has shown that they bind to CT DNA and [Cu(flmq)(2)(py)(2)] exhibits the highest binding constant to CT DNA. The cyclic voltammograms of the complexes have shown that in the presence of CT DNA the complexes can bind to CT DNA by the intercalative binding mode which has also been verified by DNA solution viscosity measurements. Competitive study with ethidium bromide(EB) has shown that the complexes can displace the DNA-bound EB indicating that they bind to DNA in strong competition with EB.
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Affiliation(s)
- Evropi Chalkidou
- Department of General and Inorganic Chemistry, Faculty of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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16
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Holstein JJ, Hübschle CB, Dittrich B. Electrostatic properties of nine fluoroquinoloneantibiotics derived directly from their crystal structure refinements. CrystEngComm 2012. [DOI: 10.1039/c1ce05966a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Nuss H, Claiser N, Pillet S, Lugan N, Despagnet-Ayoub E, Etienne M, Lecomte C. A comparative study of the topology of the experimental electron density within 2 and 4e− donor alkyne complexes. Dalton Trans 2012; 41:6598-601. [DOI: 10.1039/c2dt30308f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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18
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Kamiński R, Herbaczyńska B, Srebro M, Pietrzykowski A, Michalak A, Jerzykiewicz LB, Woźniak K. On the nature of Ni···Ni interaction in a model dimeric Ni complex. Phys Chem Chem Phys 2011; 13:10280-4. [PMID: 21505665 DOI: 10.1039/c0cp01984d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new dinuclear complex (NiC(5)H(4)SiMe(2)CHCH(2))(2) (2) was prepared by reacting nickelocene derivative [(C(5)H(4)SiMe(2)CH=CH(2))(2)Ni] (1) with methyllithium (MeLi). Good quality crystals were subjected to a high-resolution X-ray measurement. Subsequent multipole refinement yielded accurate description of electron density distribution. Detailed inspection of experimental electron density in Ni···Ni contact revealed that the nickel atoms are bonded and significant deformation of the metal valence shell is related to different populations of the d-orbitals. The existence of the Ni···Ni bond path explains the lack of unpaired electrons in the complex due to a possible exchange channel.
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Affiliation(s)
- Radosław Kamiński
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland.
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Sparkes HA, Krämer T, Brayshaw SK, Green JC, Weller AS, Howard JAK. Experimental charge density study into C–C σ-interactions in a Binor-S rhodium complex. Dalton Trans 2011; 40:10708-18. [DOI: 10.1039/c1dt10303b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Sparkes HA, Chaplin AB, Weller AS, Howard JAK. Bond catastrophes in rhodium complexes: experimental charge-density studies of [Rh(C7H8)(P
t
Bu3)Cl] and [Rh(C7H8)(PCy3)Cl]. ACTA CRYSTALLOGRAPHICA SECTION B: STRUCTURAL SCIENCE 2010; 66:503-14. [DOI: 10.1107/s0108768110031496] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 08/05/2010] [Indexed: 11/11/2022]
Abstract
Rhodium complexes have potential uses in both catalysis and promoting the cleavage of C—C bonds. In order to further our understanding of these species and their potential applications, it is vital to obtain insight into the bonding within the species, particularly the Rh—C interactions, and to this end experimental charge-density studies have been undertaken on the title complexes. High-resolution single-crystal datasets to sin θ/λ = 1.06 Å−1 were obtained at 100 K and analysed using Bader's `Atoms in Molecules' (AIM) approach. The results of the studies have provided unique insights into the bonding involving rhodium and highlight the importance of undertaking such investigations for transition metal compounds.
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21
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Mononuclear metal complexes with ciprofloxacin: Synthesis, characterization and DNA-binding properties. J Inorg Biochem 2008; 102:1798-811. [DOI: 10.1016/j.jinorgbio.2008.05.012] [Citation(s) in RCA: 207] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 05/26/2008] [Accepted: 05/28/2008] [Indexed: 01/18/2023]
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22
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Farrugia LJ, Middlemiss DS, Sillanpää R, Seppälä P. A Combined Experimental and Theoretical Charge Density Study of the Chemical Bonding and Magnetism in 3-Amino-propanolato Cu(II) Complexes Containing Weakly Coordinated Anions. J Phys Chem A 2008; 112:9050-67. [DOI: 10.1021/jp804865j] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Louis J. Farrugia
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ Scotland U.K., and Department of Chemistry, P.O. Box 35, FIN-40014, University of Jyväskylä, Jyväskylä, Finland
| | - Derek S. Middlemiss
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ Scotland U.K., and Department of Chemistry, P.O. Box 35, FIN-40014, University of Jyväskylä, Jyväskylä, Finland
| | - Reijo Sillanpää
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ Scotland U.K., and Department of Chemistry, P.O. Box 35, FIN-40014, University of Jyväskylä, Jyväskylä, Finland
| | - Petri Seppälä
- WestCHEM, Department of Chemistry, University of Glasgow, Glasgow G12 8QQ Scotland U.K., and Department of Chemistry, P.O. Box 35, FIN-40014, University of Jyväskylä, Jyväskylä, Finland
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Turel I, Živec P, Pevec A, Tempelaar S, Psomas G. Compounds of Antibacterial Agent Ciprofloxacin and Magnesium - Crystal Structures and Molecular Modeling Calculations. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800338] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Spectral properties of Eu(III) compound with antibacterial agent ciprofloxacin (cfqH). Crystal structure of [Eu(cfqH)(cfq)(H2O)4]Cl2·4.55H2O. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.01.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Efthimiadou EK, Katsarou ME, Karaliota A, Psomas G. Copper(II) complexes with sparfloxacin and nitrogen-donor heterocyclic ligands: Structure-activity relationship. J Inorg Biochem 2007; 102:910-20. [PMID: 18242712 DOI: 10.1016/j.jinorgbio.2007.12.011] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Revised: 12/11/2007] [Accepted: 12/11/2007] [Indexed: 10/22/2022]
Abstract
Three novel neutral mononuclear copper(II) complexes of the third-generation quinolone antibacterial drug sparfloxacin in the presence of a nitrogen donor heterocyclic ligand 2,2'-bipyridine, 1,10-phenanthroline or 2,2'-dipyridylamine have been prepared and characterized physicochemically and spectroscopically. The resultant complexes are of the type Cu(sparfloxacinato)(N-donor)Cl. Copper(II) is pentacoordinate having a distorted square pyramidal geometry. Molecular modeling calculations have been performed in order to propose the lowest energy model structure of the complexes. The interaction of the complexes with calf-thymus DNA has been investigated with diverse spectroscopic techniques and has shown that the complexes can bind to calf-thymus DNA by the intercalative mode. The antimicrobial activity of the complexes has been tested on three different microorganisms. The Cu(sparfloxacinato)(N-donor)Cl complexes are among the most active ones against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus, when compared to the other corresponding copper-quinolone complexes studied by our group and their antimicrobial activity is increased in the order bipyam<bipy=phen. We have also shown that two of the Cu(sparfloxacinato)(N-donor)Cl complexes have decreased the viability of human leukemia cells HL-60 in a time-dependent manner.
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Affiliation(s)
- Eleni K Efthimiadou
- Institute of Physical Chemistry, NCSR Demokritos, GR-15310 Aghia Paraskevi Attikis, Greece
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