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Journal articles on the topic 'Ruthenium Metal Complexes'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Sava, Gianni, Sabrina Pacor, Francesca Bregant, Valentina Ceschia, and Giovanni Mestroni. "Metal complexes of ruthenium." Anti-Cancer Drugs 1, no. 2 (1990): 99–108. http://dx.doi.org/10.1097/00001813-199012000-00001.

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2

Phillips, Ian G., and Peter J. Steel. "Mono- and Bi-nuclear Complexes of the Doubly Bidentate, Bridging Ligand 4,6-Di(2-pyridyl)pyrimidine." Australian Journal of Chemistry 51, no. 5 (1998): 371. http://dx.doi.org/10.1071/c97127.

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Thirteen mononuclear, homobinuclear and heterobinuclear transition metal complexes of 4,6-di(2- pyridyl)pyrimidine have been prepared. Assignments of the 1H n.m.r. spectra of the molybdenum(0) and ruthenium(II) complexes were achieved by a combination of one- and two-dimensional n.m.r. techniques, especially 1D-TOCSY. For the ruthenium complexes, electronic absorption spectroscopy and cyclic voltammetry were used to probe the nature of the metal{ligand and, for the binuclear complexes, metal-metal interactions. The complexes have low HOMO−LUMO energy gaps. Meta-metal interactions are shown to

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3

Gałczyńska, Katarzyna, Zuzanna Drulis-Kawa, and Michał Arabski. "Antitumor Activity of Pt(II), Ru(III) and Cu(II) Complexes." Molecules 25, no. 15 (2020): 3492. http://dx.doi.org/10.3390/molecules25153492.

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Metal complexes are currently potential therapeutic compounds. The acquisition of resistance by cancer cells or the effective elimination of cancer-affected cells necessitates a constant search for chemical compounds with specific biological activities. One alternative option is the transition metal complexes having potential as antitumor agents. Here, we present the current knowledge about the application of transition metal complexes bearing nickel(II), cobalt(II), copper(II), ruthenium(III), and ruthenium(IV). The cytotoxic properties of the above complexes causing apoptosis, autophagy, DNA

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4

Hoshino, Yoshimasa. "Molecular Design for Long-Range Electronic Communication between Metals." Platinum Metals Review 45, no. 1 (2001): 2–11. http://dx.doi.org/10.1595/003214001x451211.

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To construct molecular devices it is necessary to use mixed-valence metal complexes which have a large metal-metal separation distance and which exhibit strong coupling between the metals, so that errors which might arise from electrostatic interaction between the metal ions are prevented. Bridges, or spacers, are needed between two metal terminal sites to operate as effective molecular wires when one metal terminal site is in the excited state, and/or when both the terminal components are in the ground state. Binuclear ruthenium complexes, consisting of tris(β-diketonato)ruthenium(III) units,

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5

Houbrechts, Stephan, Carlo Boutton, Koen Clays, et al. "Novel Organometallic Compounds for Nonlinear Optics." Journal of Nonlinear Optical Physics & Materials 07, no. 01 (1998): 113–20. http://dx.doi.org/10.1142/s0218863598000090.

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Hyper-Rayleigh scattering is used to investigate the nonlinear optical properties of novel metal (ruthenium, nickel and gold) σ-arylacetylide complexes. The influence of the organometallic donor group and conjugating bridge on the quadratic hyperpolarizability is studied. For all organic ligands, the addition of the metal (donor) group is shown to increase the static hyperpolarizability by a factor of 2, 4 and 7 for gold, nickel and ruthenium complexes, respectively. Moreover, replacement of phenyl with a heterocyclic ring is demonstrated to enlarge the hyperpolarizability in the case of gold

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6

Voutyritsa, Errika, Ierasia Triandafillidi, Nikolaos V. Tzouras, et al. "Photocatalytic Atom Transfer Radical Addition to Olefins Utilizing Novel Photocatalysts." Molecules 24, no. 9 (2019): 1644. http://dx.doi.org/10.3390/molecules24091644.

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Photocatalysis is a rapidly evolving area of research in modern organic synthesis. Among the traditional photocatalysts, metal-complexes based on ruthenium or iridium are the most common. Herein, we present the synthesis of two photoactive, ruthenium-based complexes bearing pyridine-quinoline or terpyridine ligands with extended aromatic conjugation. Our complexes were utilized in the atom transfer radical addition (ATRA) of haloalkanes to olefins, using bromoacetonitrile or bromotrichloromethane as the source of the alkyl group. The tailor-made ruthenium-based catalyst bearing the pyridine-qu

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7

Vatansever, Hafize Seda, Hilal Kabadayı, Mehmet Korkmaz, Feyzan Özdal-Kurt, Serdar Batıkan Kavukcu, and Hayati Türkmen. "Apoptotic Properties of Rutheinum Complexes on Different Type of Cancer Cell Lines." Proceedings 2, no. 25 (2018): 1593. http://dx.doi.org/10.3390/proceedings2251593.

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Among chemotherapeutic agents, cisplatin and the other platinum-based drugs have occupied for 35 years an enviable position. The limitations of platinum-based drugs, dose dependent side effects and development of drug resistance mechanisms, have boosted the research for finding other metal-based drugs. Among metals, ruthenium is probably the one showing the greatest promises. Ruthenium (Ru) appears to be less toxic than platinum and several biological studies have indicated that ruthenium complexes possess diverse modes of action. The redox chemistry of ruthenium is rich and compatible with bi

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8

Vadivel, T., M. Dhamodaran, S. Kulathooran, M. Kavitha, and K. Amirthaganesan. "In Vitro Evaluation of Antifungal Activities by Permeation of Ru(III) Complexes Derived from Chitosan-Schiff Base Ligand." Current Applied Polymer Science 3, no. 3 (2020): 212–20. http://dx.doi.org/10.2174/2452271603666191016130012.

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Background: The transition metal complexes are derived from a natural biopolymer which is a very potent material in various research areas of study. Objective: This study aims to show the preparation of ruthenium(III) complexes from chitosan Schiff base ligand for effective application in antifungal studies. Methods: Chemical modification was carried out through a condensation reaction of chitosan with some aromatic aldehydes, which resulted in the formation of a bidentate Schiff base ligand. The Ru(III) complexes were prepared by complexation of ruthenium metal ion with bidentate ligands. The

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9

Enow, Charles A., Charlene Marais, and Barend C. B. Bezuidenhoudt. "Catalytic epoxidation of stilbenes with non-peripherally alkyl substituted carbonyl ruthenium phthalocyanine complexes." Journal of Porphyrins and Phthalocyanines 16, no. 04 (2012): 403–12. http://dx.doi.org/10.1142/s1088424612500459.

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A number of novel carbonyl(1,4,8,11,15,18,22,25-octaalkylphthalocyaninato)-ruthenium(II) complexes were prepared by metal insertion with Ru3(CO)12. The new compounds have been characterized by1H NMR,13C NMR, IR, UV-vis and mass spectroscopy. This study demonstrated that this type of complexes and specifically carbonyl(1,4,8,11,15,18,22,25-octahexylphthalo-cyaninato)ruthenium(II) and carbonyl[1,4,8,11,15,18,22,25-octa(2-cyclohexylethyl)phthalocyaninato]-ruthenium(II), exhibit high catalytic activity and stability in the epoxidation of stilbenes with 2,6-dichloropyridine N-oxide as oxidant.

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10

Burmeister, Hilke, Pascal Dietze, Lutz Preu, Julia E. Bandow, and Ingo Ott. "Evaluation of Ruthenium(II) N-Heterocyclic Carbene Complexes as Antibacterial Agents and Inhibitors of Bacterial Thioredoxin Reductase." Molecules 26, no. 14 (2021): 4282. http://dx.doi.org/10.3390/molecules26144282.

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A series of ruthenium(II) complexes with N-heterocyclic carbene (NHC) ligands of the general type (arene)(NHC)Ru(II)X2 (where X = halide) was prepared, characterized, and evaluated as antibacterial agents in comparison to the respective metal free benzimidazolium cations. The ruthenium(II) NHC complexes generally triggered stronger bacterial growth inhibition than the metal free benzimidazolium cations. The effects were much stronger against Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) than against Gram-negative bacteria (Escherichia coli, Acinetobacter baumannii, Pseud

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11

Chatterjee, Debabrata, and Rudi van Edik. "Prospect of RuIII(edta) in Catalysis of Bicarbonate Reduction." Current Catalysis 9, no. 1 (2020): 23–31. http://dx.doi.org/10.2174/2211544708666190902124817.

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Reduction of carbon dioxide into formic acid using transition metal complexes as catalysts is a research area of abiding importance. Although ruthenium(II) complexes as ‘molecular catalysts’ have received much attention, use of ruthenium(III) complexes in the selective reduction of carbon dioxide into formic acid has recently been explored. This review focuses on the recent research progress in the use of a ruthenium(III) complex containing the ‘edta’ ligand (edta4- = ethylenediaminetetraacetate) as catalyst or mediator in the catalytic, electro-catalytic and photocatalytic conversion of bicar

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12

Schenk, Wolfdieter A., and Nikolai Kuhnerta. "Synthesis of Halfsandwich Ruthenium Complexes of Sulfinic Acid Esters [1]." Zeitschrift für Naturforschung B 55, no. 6 (2000): 527–35. http://dx.doi.org/10.1515/znb-2000-0614.

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A series of halfsandwich ruthenium sulfinato complexes [CpRu(PR'3)2(SO2R)] (R = Me, CH2Ph, C2H4Ph, Ph, 4-C6H4Me; PR'3 = PMe3, 1/2 dppm) with various electronic and steric environments around the ruthenium centre, have been prepared by insertion of SO2 into a ruthenium carbon bond, by a direct ligand exchange reaction, or by oxidation of thiolato complexes with 3-chloroperoxybenzoic acid. The chiral complexes [CpRu(CO )(PPh3)(SO2R)] (R = Me, CH2Ph, Ph) were obtained similarly by oxidation of the corresponding thiolates with magnesium monoperoxyphthalate. Alkylation of the sulfinato complexes wi

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13

Ford, Peter C. "Photochemical reactions of metal nitrosyl complexes. Mechanisms of NO reactions with biologically relevant metal centers." International Journal of Photoenergy 3, no. 3 (2001): 161–69. http://dx.doi.org/10.1155/s1110662x01000204.

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The discoveries that nitric oxide (a.k.a. nitrogen monoxide) serves important roles in mammalian bioregulation and immunology have stimulated intense interest in the chemistry and biochemistry of NO and derivatives such as metal nitrosyl complexes. Also of interest are strategies to deliver NO to biological targets on demand. One such strategy would be to employ a precursor which displays relatively low thermal reactivity but is photochemically active to release NO. This proposition led us to investigate laser flash and continuous photolysis kinetics of nitrosyl complexes such as the Roussin's

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14

Motswainyana, William M., and Peter A. Ajibade. "Anticancer Activities of Mononuclear Ruthenium(II) Coordination Complexes." Advances in Chemistry 2015 (February 19, 2015): 1–21. http://dx.doi.org/10.1155/2015/859730.

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Ruthenium compounds are highly regarded as potential drug candidates. The compounds offer the potential of reduced toxicity and can be tolerated in vivo. The various oxidation states, different mechanism of action, and the ligand substitution kinetics of ruthenium compounds give them advantages over platinum-based complexes, thereby making them suitable for use in biological applications. Several studies have focused attention on the interaction between active ruthenium complexes and their possible biological targets. In this paper, we review several ruthenium compounds which reportedly posses

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15

Fernandes, Ana Cristina. "Synthesis, Biological Activity and Medicinal Applications of Ruthenium Complexes Containing Carbohydrate Ligands." Current Medicinal Chemistry 26, no. 35 (2019): 6412–37. http://dx.doi.org/10.2174/0929867326666190124124350.

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The search for new metal-efficient drugs has attracted considerable attention of the scientific community. Among them, ruthenium complexes have emerged as an excellent alternative of platinum complexes. This review presents a thorough and timely coverage of the synthesis, biological activity and medicinal applications of ruthenium complexes bearing carbohydrate ligands, allowing a large community of readers, in particularly the community that works in organic, inorganic, bioorganometallic and medicinal chemistry, ready access to the most relevant examples.

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16

Jha, Anjali, Y. L. N. Murthy, G. Durga, and T. T. Sundari. "Microwave-Assisted Synthesis of 3,5-Dibenzyl-4-amino-1,2,4-triazole and its Diazo Ligand, Metal Complexes Along with Anticancer Activity." E-Journal of Chemistry 7, no. 4 (2010): 1571–77. http://dx.doi.org/10.1155/2010/569605.

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Synthesis of 3,5-dibenzyl-4-amino-1,2,4-triazole was accomplished via a conventional method as well as microwave irradiation method, followed by diazotization and coupling with 2,4-pentanedione. The dinucleating ligand was isolated and complexed with Ni(II), Cu(II) and Ru(III) chlorides. These complexes were screened on Jurkat, Raji & PBMC cell lines for anticancer activity. Ruthenium complexes showed potential anticancer activities.

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17

Yanagisawa, Masaru, Ferenc Korodi, Jonas Bergquist, et al. "Synthesis of phthalocyanines with two carboxylic acid groups and their utilization in solar cells based on nano-structured TiO2." Journal of Porphyrins and Phthalocyanines 08, no. 10 (2004): 1228–35. http://dx.doi.org/10.1142/s1088424604000581.

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A way of anchoring unsymmetrical phthalocyaninato-metal complexes (metal ion: zinc and ruthenium) is described. The synthesis and characterization of these complexes are presented. In case of the zinc complex, the obtained product is an aggregate, while only the monomer is obtained in the case of the ruthenium derivative. Both complexes could be attached onto the TiO 2 surface by using the reported method. Both dyes are expected to form monolayers with dye molecules standing on the surface of nano-structured TiO 2, forming higher-order aggregates with the zinc but not with the ruthenium comple

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18

Acosta-Ramirez, Alberto, Edward D. Cross, Robert McDonald та Matthias Bierenstiel. "Binuclear ruthenium η6-arene complexes with tetradentate N,S-ligands containing the ortho-aminothiophenol motif". Dalton Trans. 43, № 8 (2014): 3104–13. http://dx.doi.org/10.1039/c3dt53075b.

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19

Li, Xin, Kirsten Heimann, Fangfei Li, Jeffrey M. Warner, F. Richard Keene, and J. Grant Collins. "Dinuclear ruthenium(ii) complexes containing one inert metal centre and one coordinatively-labile metal centre: syntheses and biological activities." Dalton Transactions 45, no. 9 (2016): 4017–29. http://dx.doi.org/10.1039/c5dt04885k.

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20

Žakula, Jelena, D. Maja Nešić, Milica Matijević, Milutin Stepić, Marijana Petković, and Lela Korićanac. "Cancer cell death induced by ruthenium complexes." Biologia Serbica 45, no. 2 (2023): 72–80. https://doi.org/10.5281/zenodo.10402334.

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<strong>Summary. </strong>Cancer is a complex and often fatal disease characterized by uncontrolled cell division. The most commonly used chemotherapeutics target rapidly dividing cancer cells but, at the same time, damage healthy dividing cells. New metal-based complexes, such as ruthenium complexes, that possess cytotoxic properties, have been developed to overcome these challenges. Ruthenium complexes achieve their antitumor effect mainly by inducing apoptosis. In recent years, induction of other types of cell death, such as ferroptosis and autophagy, was also reported. The dual role of aut

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21

Gaiddon, Christian, Isabelle Gross, Xiangjun Meng, et al. "Bypassing the Resistance Mechanisms of the Tumor Ecosystem by Targeting the Endoplasmic Reticulum Stress Pathway Using Ruthenium- and Osmium-Based Organometallic Compounds: An Exciting Long-Term Collaboration with Dr. Michel Pfeffer." Molecules 26, no. 17 (2021): 5386. http://dx.doi.org/10.3390/molecules26175386.

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Metal complexes have been used to treat cancer since the discovery of cisplatin and its interaction with DNA in the 1960’s. Facing the resistance mechanisms against platinum salts and their side effects, safer therapeutic approaches have been sought through other metals, including ruthenium. In the early 2000s, Michel Pfeffer and his collaborators started to investigate the biological activity of organo-ruthenium/osmium complexes, demonstrating their ability to interfere with the activity of purified redox enzymes. Then, they discovered that these organo-ruthenium/osmium complexes could act in

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22

Ackermann, Lutz. "Transition-metal-catalyzed direct arylations via C–H bond cleavages." Pure and Applied Chemistry 82, no. 7 (2010): 1403–13. http://dx.doi.org/10.1351/pac-con-09-08-17.

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Palladium catalysts allowed for intermolecular direct arylations of heteroarenes with aryl chlorides, tosylates, or mesylates as electrophiles. As an economically attractive alter-native, inexpensive copper catalysts could be employed for regioselective C–H bond aryl-ations of 1,2,3-triazoles. On the contrary, intermolecular C–H bond functionalizations of arenes were accomplished with ruthenium complexes derived from air-stable (heteroatom-substituted) secondary phosphine oxide (HASPO) preligands. Particularly, the use of ruthenium(II) carboxylate complexes enabled broadly applicable direct ar

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23

Ishida, Hitoshi. "The Research work of Dr. Ishida ‐ including Syntheses and Their Photocatalytic CO2 Reduction of Dinuclear Metal Complexes with Peptide Linkages project." Impact 2024, no. 1 (2024): 6–7. http://dx.doi.org/10.21820/23987073.2024.1.6.

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The process of photosynthesis holds potential to be harnessed for addressing increasing CO2 levels, as well as for finding solutions for energy shortages resulting from depleted fossil fuel reserves. Professor Hitoshi Ishida, Laboratory on Functional Metal Complexes, Kansai University, has extensive expertise in creating artificial enzymes and is interested in developing techniques to emulate photosynthesis. The plan is to create a new photocatalyst by combining photochemical CO2 reduction catalytic reactions for artificial photosynthesis with the technology of functional molecule design using

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24

Naik, Surabhi, Synøve Ø. Scottwell, Hsiu L. Li, Chanel F. Leong, Deanna M. D'Alessandro, and Leslie D. Field. "Dinuclear acetylide-bridged ruthenium(ii) complexes with rigid non-aromatic spacers." Dalton Transactions 49, no. 8 (2020): 2687–95. http://dx.doi.org/10.1039/c9dt04856a.

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A series of dinuclear acetylide-bridged ruthenium complexes with rigid linkers 1,4-bicyclooctane and 1,12-p-carborane was synthesised and the metal-to-metal communication through the bridge was explored using cyclic voltammetry.

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25

Dickerson, Matthew, Brock Howerton, Younsoo Bae, and Edith C. Glazer. "Light-sensitive ruthenium complex-loaded cross-linked polymeric nanoassemblies for the treatment of cancer." Journal of Materials Chemistry B 4, no. 3 (2016): 394–408. http://dx.doi.org/10.1039/c5tb01613d.

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Cross-linked polymeric nanoassemblies are potential carrier systems for cytotoxic ruthenium complexes, and exhibit a combination of electrostatic and hydrophobic interactions with the metal complexes that impact release rates, release percentages, and biological activity.

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26

Zhang, Si-Qi, Li-Hua Gao, Hua Zhao, and Ke-Zhi Wang. "Recent Progress in Polynuclear Ruthenium Complex-Based DNA Binders/Structural Probes and Anticancer Agents." Current Medicinal Chemistry 27, no. 22 (2020): 3735–52. http://dx.doi.org/10.2174/0929867326666181203143422.

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Ruthenium complexes have stood out by several mononuclear complexes which have entered into clinical trials, such as imidazolium [trans-RuCl4(1H-imidazole)(DMSO-S)] (NAMI-A) and ([Ru(II)(4,4&#039;-dimethyl-2,2&#039;-bipyridine)2-(2(2&#039;-,2&#039;&#039;:5&#039;&#039;,2&#039;&#039;&#039;-terthiophene)-imidazo[4,5-f] [1,10]phenanthroline)] 2+) (TLD-1433), opening a new avenue for developing promising ruthenium-based anticancer drugs alternative to Cisplatin. Polynuclear ruthenium complexes were reported to exhibit synergistic and/or complementary effects:

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27

Novokmet, Slobodan, Isidora Stojic, Katarina Radonjic, Maja Savic, and Jovana Jeremic. "Toxic Effects of Metallopharmaceuticals." Serbian Journal of Experimental and Clinical Research 18, no. 3 (2017): 191–94. http://dx.doi.org/10.1515/sjecr-2016-0082.

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Abstract Discovery of the metallopharmaceutical cisplatin and its use in antitumour therapy has initiated the rational design and screening of metal-based anticancer agents as potential chemotherapeutics. In addition to the achievements of cisplatin and its therapeutic analogues, there are significant drawbacks to its use: resistance and toxicity. Over the past four decades, numerous transition metal complexes have been synthesized and investigated in vitro and in vivo. The most studied metals among these complexes are platinum and ruthenium. The key features of these investigations is to find

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28

B., Chakravarty. "Substitution reactions of ligand bridged multinuclear complexes of platinum group metal ions." Journal of Indian Chemical Society Vol. 80, Apr 2003 (2003): 227–31. https://doi.org/10.5281/zenodo.5839342.

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Department of Chemistry, University of Kalyani, Kalyani-741 235, India <em>E-mail:</em> bnc@klyuniv.ernet.in <em>Manuscript received 11 September 2002</em> This review discusses the kinetic aspects of the substitutions in various ligand bridge multinuclear complexes of platinum group metal ions. The reactions have been categorized with various bridging bonds and metal ions acting as nuclei. Polymerization of complex compounds involves formation of multinuclear complexes. Kinetics and mechanistic features associated with all such reactions have been highlighted and discussed critically.

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Tashima, Naoto, Satomi Ohta, and Shigeki Kuwata. "Metal–ligand cooperative C–O bond cleavage of propargylic alcohol with protic pyrazole complexes of ruthenium." Faraday Discussions 220 (2019): 364–75. http://dx.doi.org/10.1039/c9fd00040b.

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30

Mauri, Luca, Alessia Colombo, Claudia Dragonetti, Francesco Fagnani, and Dominique Roberto. "Iridium and Ruthenium Complexes Bearing Perylene Ligands." Molecules 27, no. 22 (2022): 7928. http://dx.doi.org/10.3390/molecules27227928.

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The present review summarizes the work carried out mostly in the last decade on iridium and ruthenium complexes bearing various perylene ligands, of particular interest for bioimaging, photodynamic therapy, and solar energy conversion. In these complexes, the absorption spectra and the electrochemical properties are those of the perylene subunit plus those of the metal moiety. In contrast, the emissions are completely changed with respect to perylenes considered alone. Thus, fully organic perylenes are characterized by a strong fluorescence in the visible region, lifetimes of a few nanoseconds

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D’Aléo, A., S. Welter, E. Cecchetto, and L. De Cola. "Electronic energy transfer in dinuclear metal complexes containing meta-substituted phenylene units." Pure and Applied Chemistry 77, no. 6 (2005): 1035–50. http://dx.doi.org/10.1351/pac200577061035.

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The synthesis and photophysical properties of heterometallic dinuclear complexes based on ruthenium and osmium trisbipyridine units, Ru-mPh3-Os and Ru-mPh5-Os, in which the metal complexes are linked via an oligophenylene bridge centrally connected in the meta position, are described. Electronic energy transfer from the excited ruthenium-based component (donor) to the osmium moiety (acceptor) has been investigated using steady-state and time-resolved spectroscopy. The results obtained for the meta-substituted compounds are compared with the analogous systems in which the phenylene spacers are

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Li, Panpan, Zhaoyu Jin, Meilian Zhao, Yanxue Xu, Yong Guo, and Dan Xiao. "Self-enhanced electrogenerated chemiluminescence of ruthenium(ii) complexes conjugated with Schiff bases." Dalton Transactions 44, no. 5 (2015): 2208–16. http://dx.doi.org/10.1039/c4dt03310h.

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Dixon, Isabelle M., Jean-Louis Heully, Fabienne Alary, and Paul I. P. Elliott. "Theoretical illumination of highly original photoreactive3MC states and the mechanism of the photochemistry of Ru(ii) tris(bidentate) complexes." Phys. Chem. Chem. Phys. 19, no. 40 (2017): 27765–78. http://dx.doi.org/10.1039/c7cp05532c.

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34

Metzker, Gustavo, Inara de Aguiar, Maykon Lima Souza, Daniel Rodrigues Cardoso, and Douglas Wagner Franco. "Reaction of ruthenium(II) complexes with 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and hydroxyl radicals." Canadian Journal of Chemistry 92, no. 8 (2014): 788–93. http://dx.doi.org/10.1139/cjc-2014-0082.

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The reaction of the complexes trans-[RuII(NO+)(NH3)4L] and [RuII(NO+)HEDTA] with 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and hydroxyl (OH•) radicals has been investigated at 25.0 ± 0.1 °C using spectroscopic (UV-vis and electron paramagnetic resonance) and electrochemical techniques (differential pulse voltammetry and cyclic voltammetry). The redox potential of RuIII/RuII for the ruthenium nitrosyl complexes was determined and is in the range of +2.2 V (L = HEDTA) to +2.6 V (L = isn) versus the normal hydrogen electrode . The trans-[RuII(NO+)(NH3)4L]3+ and [RuII(NO+)HEDTA] complexes do not react

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35

Caramori, Giovanni F., Leone C. Garcia, Diego M. Andrada, and Gernot Frenking. "Ruthenium(ii) complexes of N-heterocyclic carbenes derived from imidazolium-linked cyclophanes." Dalton Trans. 43, no. 39 (2014): 14710–19. http://dx.doi.org/10.1039/c4dt01473a.

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36

Osborne, Shani A. M., and Zoe Pikramenou. "Highly luminescent gold nanoparticles: effect of ruthenium distance for nanoprobes with enhanced lifetimes." Faraday Discussions 185 (2015): 219–31. http://dx.doi.org/10.1039/c5fd00108k.

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The photophysical properties of gold nanoparticles, AuNPs, with sizes of 13, 50 and 100 nm in diameter, coated with surface-active ruthenium complexes have been studied to investigate the effect of the distance of the ruthenium luminescent centre from the gold surface. Luminescence lifetimes of the three ruthenium probes, RuS1, RuS6 and RuS12, with different length spacer units between the surface active groups and the ruthenium centre were taken. The metal complexes were attached to AuNP13, AuNP50 and AuNP100via thiol groups using a method of precoating the nanoparticles with a fluorinated su

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37

Andrés, Celia María Curieses, José Manuel Pérez de la Lastra, Elena Bustamante Munguira, Celia Andrés Juan, and Eduardo Pérez-Lebeña. "Anticancer Activity of Metallodrugs and Metallizing Host Defense Peptides—Current Developments in Structure-Activity Relationship." International Journal of Molecular Sciences 25, no. 13 (2024): 7314. http://dx.doi.org/10.3390/ijms25137314.

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This article provides an overview of the development, structure and activity of various metal complexes with anti-cancer activity. Chemical researchers continue to work on the development and synthesis of new molecules that could act as anti-tumor drugs to achieve more favorable therapies. It is therefore important to have information about the various chemotherapeutic substances and their mode of action. This review focuses on metallodrugs that contain a metal as a key structural fragment, with cisplatin paving the way for their chemotherapeutic application. The text also looks at ruthenium c

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38

Karpin, George W., Joseph S. Merola та Joseph O. Falkinham. "Transition Metal–α-Amino Acid Complexes with Antibiotic Activity against Mycobacterium spp." Antimicrobial Agents and Chemotherapy 57, № 7 (2013): 3434–36. http://dx.doi.org/10.1128/aac.00452-13.

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ABSTRACTSynthetic iridium-, rhodium-, and ruthenium-amino acid complexes with hydrophobicl-amino acids have antibiotic activity againstMycobacteriumspp., includingMycobacterium bovisBCG and the rapidly growing speciesMycobacterium abscessusandMycobacterium chelonae. Concentrations of transition metal-amino acid complexes demonstrating hemolysis or cytotoxicity were 10- to 25-fold higher than were the MICs.

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39

Jimenez, Jorge, Indranil Chakraborty, and Pradip Mascharak. "Synthesis and structures of ruthenium di- and tricarbonyl complexes derived from 4,5-diazafluoren-9-one." Acta Crystallographica Section C Structural Chemistry 71, no. 11 (2015): 965–68. http://dx.doi.org/10.1107/s2053229615018100.

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Carbon monoxide (CO) has recently been shown to impart beneficial effects in mammalian physiology and considerable research attention is now being directed toward metal–carbonyl complexes as a means of delivering CO to biological targets. Two ruthenium carbonyl complexes, namelytrans-dicarbonyldichlorido(4,5-diazafluoren-9-one-κ2N,N′)ruthenium(II), [RuCl2(C11H6N2O)(CO)2], (1), andfac-tricarbonyldichlorido(4,5-diazafluoren-9-one-κN)ruthenium(II), [RuCl2(C11H6N2O)(CO)3], (2), have been isolated and structurally characterized. In the case of complex (1), thetrans-directing effect of the CO ligand

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40

Bhattacharjee, Rita, and Virupaiah Gayathri. "Synthesis and Characterization of Ru(III) Complexes Containing Quinazoline Derivatives and their Biological and Catalytic Activities." Asian Journal of Chemistry 35, no. 7 (2023): 1645–50. http://dx.doi.org/10.14233/ajchem.2023.27941.

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Ruthenium trichloride trihydrate (RuCl3·3H2O) reacted with quinazoline derivative ligands (L) in 1:1 mole ratio in acetone to yield a series of brown/green/greenish black ruthenium(III) complexes of the type RuX3L·nH2O where X = Cl, n = 0, 1, 2 and 3 and L is 6-R-5,6-dihydrobenzoimidazo[1,2- c]quinazoline (R = ethyl: L1/n or i-propyl: L2, L3/n or i-butyl: L4, L5/phenyl: L6/furyl: L7/thiophenyl: L8/o or p-hydroxyphenyl: L9, L10/o or p-chlorophenyl: L11, L12/dimethylaminophenyl: L13). All the synthesized Ru(III) complexes were characterized by elemental analyses, conductivity measurements, infra

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Shi, Jing, Bowen Hu, Dawei Gong, Shu Shang, Guangfeng Hou, and Dafa Chen. "Ruthenium complexes bearing an unsymmetrical pincer ligand with a 2-hydroxypyridylmethylene fragment: active catalysts for transfer hydrogenation of ketones." Dalton Transactions 45, no. 11 (2016): 4828–34. http://dx.doi.org/10.1039/c6dt00034g.

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Zubair, Talha, Shanjida Sultana, Tanjum Jahan Mojumder, et al. "Metal Complexes as Chemotherapeutic Agents for the Treatment of Cancer." Journal of Biosciences and Experimental Pharmacology 2, no. 1 (2023): 1–13. https://doi.org/10.62624/jbep00.0007.

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Metallic substances have been used for the therapeutic purposes since ancient times. Serendipitous discovery of cisplatin as an anticancer agent apparently initiated the use of metal complexes as chemotherapeutic agents for the treatment of cancer. Later on, many other metal complexes such as gold, silver, ruthenium, arsenic, titanium, manganese, palladium, gallium, aluminum, etc. has been investigated, studied and approved for cancer treatment. Many metal complexes have been synthesized by redesigning existing drug models through metal-ligand exchange or by developing an entirely new drug wit

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Jayakumar, Thanasekaran, Joen-Rong Sheu, Chih-Wei Hsia, Periyakali Saravana Bhavan, and Chao-Chien Chang. "Anti-Inflammatory Mechanisms of Novel Synthetic Ruthenium Compounds." Applied Sciences 11, no. 21 (2021): 10092. http://dx.doi.org/10.3390/app112110092.

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Inflammation is the primary biological reaction to induce severe infection or injury in the immune system. Control of different inflammatory cytokines, such as nitric oxide (NO), interleukins (IL), tumor necrosis factor alpha-(TNF-α), noncytokine mediator, prostaglandin E2 (PGE2), mitogen activated protein kinases (MAPKs) and nuclear factor kappa B (NF-κB), facilitates anti-inflammatory effect of different substances. Coordination metal complexes have been applied as metallo-drugs. Several metal complexes have found to possess potent biological activities, especially anticancer, cardioprotecti

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Soma sekhar, A., A. Jayaraju, and J. Sreeramulu. "Spectrochemical Investigation of di methoxy Aniline Dithiocarbamate metal complexes-Biological activity." Journal of Drug Delivery and Therapeutics 9, no. 6-s (2019): 88–92. http://dx.doi.org/10.22270/jddt.v9i6-s.3741.

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Dithiocarbomates are a class of sulfur-based metal-chelating compounds commonly used in industry, agriculture, and medicine. 2,6 di methoxy Aniline dithiocarbamate Complexes of Copper and Ruthenium have been prepared and Characterized by Spectroscopic methods like IR,NMR and also analysis of Biological activity. The investigation of these complexes confirmed that the stability of metal–ligands coordination through, S & S,N atoms as bidendate chelates..

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Akatsuka, Komi, Ryosuke Abe, Tsugiko Takase, and Dai Oyama. "Coordination Chemistry of Ru(II) Complexes of an Asymmetric Bipyridine Analogue: Synergistic Effects of Supporting Ligand and Coordination Geometry on Reactivities." Molecules 25, no. 1 (2019): 27. http://dx.doi.org/10.3390/molecules25010027.

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The reactivities of transition metal coordination compounds are often controlled by the environment around the coordination sphere. For ruthenium(II) complexes, differences in polypyridyl supporting ligands affect some types of reactivity despite identical coordination geometries. To evaluate the synergistic effects of (i) the supporting ligands, and (ii) the coordination geometry, a series of dicarbonyl–ruthenium(II) complexes that contain both asymmetric and symmetric bidentate polypyridyl ligands were synthesized. Molecular structures of the complexes were determined by X-ray crystallograph

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Varela, Jesús A., Carlos González-Rodríguez, Silvia G. Rubín, Luis Castedo, and Carlos Saá. "New cyclizations via catalytic ruthenium vinylidenes." Pure and Applied Chemistry 80, no. 5 (2008): 1167–77. http://dx.doi.org/10.1351/pac200880051167.

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New carbocyclizations that proceed via catalytic metal-vinylidenes are presented. Metal-vinylidene catalytic species, which are easily accessible from terminal alkynes and catalytic amounts of transition-metal complexes, can be involved either in pericyclic reactions or in tandem processes triggered by nucleophilic attack at the electrophilic position of the vinylidene. In both cases, a wide variety of valuable cyclic compounds are easily accessible. Some recent carbocyclizations will be described.

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Ivanova, Stefka. "Metal-based organic complexes with anticancer activity." Bulgarian Society of Medical Sciences Journal 6 (October 28, 2024): e136135. https://doi.org/10.3897/bsms.6.136135.

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The discovery of the mechanism of action and the main structure-activity dependencies of platinum complexes create opportunities for rational synthesis of new metal-based organic complexes as potential antitumor drugs with reduced resistance and toxicity and / or a wider spectrum of antitumor activity. In the field of targeted synthesis of antitumor complexes has been working hard for 40 years. Initial research focused on obtaining complexes with a structure similar to cisplatin, and later on the search for new "non-classical" antitumor complexes. Selection of a suitable ligand system, ensurin

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Tan, Cai-Ping, Yan-Mei Zhong, Liang-Nian Ji, and Zong-Wan Mao. "Phosphorescent metal complexes as theranostic anticancer agents: combining imaging and therapy in a single molecule." Chemical Science 12, no. 7 (2021): 2357–67. http://dx.doi.org/10.1039/d0sc06885c.

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Kim, Junhwan, and Malcolm E. Kenney. "The synthesis and properties of iron, ruthenium, and osmium octabutoxynaphthalocyanine." Journal of Porphyrins and Phthalocyanines 16, no. 09 (2012): 1068–71. http://dx.doi.org/10.1142/s1088424612500903.

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New series of iron, ruthenium, and osmium octabutoxynaphthalocyanines were synthesized by inserting corresponding metals into the metal-free octabutoxynaphthalocyanine. Although preparation of axial ligand-free iron octabutoxynaphthalocyanines was reported before, we could not reproduce the synthesis by following the reported method. We attributed the failure to the instability of the iron octabutoxynaphthalocyanines. Bis-ligation increased the stability of the iron complex but only sufficiently for characterization. The application of iron complexes will be limited by their instability. Howev

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Downard, AJ, PJ Steel, and J. Steenwijk. "Syntheses of Chelating Tetrazole-Containing Ligands and Studies of Their Palladium(II) and Ruthenium(II) Complexes." Australian Journal of Chemistry 48, no. 9 (1995): 1625. http://dx.doi.org/10.1071/ch9951625.

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Eleven chelating tetrazole -containing ligands have been synthesized, and their complexes with palladium(II) and ruthenium(II) prepared. Proton n.m.r. spectroscopy, electronic absorption spectroscopy and cyclic voltammetry have been used to study the nature of the metal-ligand interactions in these complexes. The negatively charged tetrazolate group is shown to be a strong electron donor with very different properties to those of the protonated or alkylated tetrazole group. This leads to pH control of the properties of transition metal complexes containing such ligands.

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