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Journal articles on the topic 'Platinum compounds Platinum compounds Transition metal complexes Transition metal complexes'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Melník, Milan, Peter Mikuš, and Clive Holloway. "Crystalographic and structural characterization of heterometallic platinum compounds. Part III: heterotrinuclear compounds." Open Chemistry 11, no. 6 (2013): 827–900. http://dx.doi.org/10.2478/s11532-013-0226-3.

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AbstractThis review article includes over three hundred and sixty heterotrinuclear platinum complexes of the composition Pt2M (205 examples), PtM2 (132 examples) and PtMM (24 examples). The heterometals include the non-transition and transition metals. Three metal atoms form a wide variability of frameworks: M3 triangular, dicapped M3 triangular, V shaped M3, M3 linear, five-, six- and seven- metallocycles and unique structures of which triangular and linear are the most common. This has led to a rich chemistry of platinum not only from variability of metals, but also from their framework and

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2

Lu, Guo-Liang, Cheuk-Lam Ho, Qiwei Wang, et al. "Synthesis and Characterization of Some Metal Complexes of 4,5-Diazafluoren-9-one and their Biological Effects on Human Carcinoma Cells." Australian Journal of Chemistry 61, no. 12 (2008): 975. http://dx.doi.org/10.1071/ch08342.

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Three new transition metal complexes of 4,5-diazafluoren-9-one, [(DAFO)PdCl2], [(DAFO)PtCl2], and [(DAFO)ZnCl2], were prepared in good yields by the reactions between appropriate metal chloride precursors and 4,5-diazafluoren-9-one under ambient conditions. The structures of these metal complexes were established by spectroscopic (Fourier-transform IR, NMR, and fast-atom bombardment mass spectrometry) techniques. The possible biological activity of these compounds on three human cancer cell lines including Hep3B, MDAMB-231, and SKHep-1 was investigated. The results obtained showed that both zi

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3

Zykova, A. "Synthesis and Structure of Aryl Phosphorus Compounds." Bulletin of the South Ural State University series "Chemistry" 12, no. 4 (2020): 5–50. http://dx.doi.org/10.14529/chem200401.

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Based on an analysis of the literature published from the late 20th century to the beginning of the 21st century, methods for the synthesis of some complex tetraorganylphosphonium salts are systematized and described, along with the features of the chemical transformations of pentaphenylphosphorus, which was first obtained in 1953. The tetraorganylphosphonium salts were known much earlier, however, the features of the synthesis of transition metal complexes, which are usually obtained from tetraorganylphosphorus halides and metal halides, have not been sufficiently studied. The present review

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4

Radonjic, Katarina, Isidora Stojic, Vladimir Zivkovic, et al. "The Platinum(II) Complexes Induced Oxidative Stress of Isolated Rat Heart." Serbian Journal of Experimental and Clinical Research 18, no. 2 (2017): 111–17. http://dx.doi.org/10.1515/sjecr-2016-0059.

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AbstractInterest for the clinical application of transition metal complexes as chemotherapeutic agents initially started with discovery of cisplatin. Despite the remarkable clinical success, cisplatin treatment is limited due to its resistance and side effects. Over the last 40 years, numerous transition metal complexes were synthesized and investigated in vitro and in vivo in order to establish a metallopharmaceutical that will exert less toxicity and equal or higher potency. We have compared the cardiotoxicity of 2 platinum complexes, one ligand, and a starting salt for complex synthesis usi

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5

Johnstone, Timothy C., Kogularamanan Suntharalingam, and Stephen J. Lippard. "Third row transition metals for the treatment of cancer." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2037 (2015): 20140185. http://dx.doi.org/10.1098/rsta.2014.0185.

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Platinum compounds are a mainstay of cancer chemotherapy, with over 50% of patients receiving platinum. But there is a great need for improvement. Major features of the cisplatin mechanism of action involve cancer cell entry, formation mainly of intrastrand cross-links that bend and unwind nuclear DNA, transcription inhibition and induction of cell-death programmes while evading repair. Recently, we discovered that platinum cross-link formation is not essential for activity. Monofunctional Pt compounds such as phenanthriplatin, which make only a single bond to DNA nucleobases, can be far more

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Niehaus, Thomas A., Thomas Hofbeck, and Hartmut Yersin. "Charge-transfer excited states in phosphorescent organo-transition metal compounds: a difficult case for time dependent density functional theory?" RSC Advances 5, no. 78 (2015): 63318–29. http://dx.doi.org/10.1039/c5ra12962a.

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A series of 17 platinum(ii) and iridium(iii) complexes have been investigated theoretically and experimentally to elucidate the charge-transfer character in emission from the lowest triplet state. TDDFT is found to be surprisingly accurate.

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7

Czarnomysy, Robert, Dominika Radomska, Anna Muszyńska, et al. "Evaluation of the Anticancer Activities of Novel Transition Metal Complexes with Berenil and Nitroimidazole." Molecules 25, no. 12 (2020): 2860. http://dx.doi.org/10.3390/molecules25122860.

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Novel transition metal complexes (Au, Pd, Pt) with berenil and 2-(1-methyl-5-nitroimidazol-2-yl)ethanol were obtained through two-step synthesis. The cytotoxicity assay against MCF-7 and MDA-MB-231 breast cancer cells revealed that novel platinum and palladium complexes cause a reduction on the viability of MCF-7 and MDA-MB-231 breast cancer cells to a greater extent than cisplatin. The complexes showed lower cytotoxicity on normal MCF-10A human breast epithelial cells than on tumor cells. Furthermore, we observed that these complexes selectively concentrate in tumor cell mitochondria due to t

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8

Ryabov, Alexander D. "The Exchange of Cyclometalated Ligands." Molecules 26, no. 1 (2021): 210. http://dx.doi.org/10.3390/molecules26010210.

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Reactions of cyclometalated compounds are numerous. This account is focused on one of such reactions, the exchange of cyclometalated ligands, a reaction between a cyclometalated compound and an incoming ligand that replaces a previously cyclometalated ligand to form a new metalacycle: + H-C*~Z ⇄ + H-C~Y. Originally discovered for PdII complexes with Y/Z = N, P, S, the exchange appeared to be a mechanistically challenging, simple, and convenient routine for the synthesis of cyclopalladated complexes. Over four decades it was expanded to cyclometalated derivatives of platinum, ruthenium, mangane

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9

Dube, Jonathan W., Vanessa A. Béland, Paul D. Boyle, and Paul J. Ragogna. "Utilizing a zwitterionic approach for the synthesis of late transition metal – triphosphenium ion coordination compounds." Canadian Journal of Chemistry 93, no. 2 (2015): 253–64. http://dx.doi.org/10.1139/cjc-2014-0204.

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Zwitterionic dicoordinate phosphorus(I) compounds (1 and 2), formally a charge neutral triphosphenium ion or phosphanide, are shown to coordinate to a variety of late transition metals. The reaction of the phosphanide proligands with {Rh(COD)Cl}2 results in an equilibrium process that varies as a function of temperature or reaction stoichiometry. Palladium(II) compounds have a tendency to chlorinate the borate backbone while giving dimeric coordination compounds (1Pd) and also a decomposition product (3) where the P(I) atom was replaced. Both “lone pairs” of electrons on phosphorus are utilize

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10

Khalimon, Andrey, Kristina Gudun, and Davit Hayrapetyan. "Base Metal Catalysts for Deoxygenative Reduction of Amides to Amines." Catalysts 9, no. 6 (2019): 490. http://dx.doi.org/10.3390/catal9060490.

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The development of efficient methodologies for production of amines attracts significant attention from synthetic chemists, because amines serve as essential building blocks in the synthesis of many pharmaceuticals, natural products, and agrochemicals. In this regard, deoxygenative reduction of amides to amines by means of transition-metal-catalyzed hydrogenation, hydrosilylation, and hydroboration reactions represents an attractive alternative to conventional wasteful techniques based on stoichiometric reductions of the corresponding amides and imines, and reductive amination of aldehydes wit

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11

Cebrián, Cristina, and Matteo Mauro. "Recent advances in phosphorescent platinum complexes for organic light-emitting diodes." Beilstein Journal of Organic Chemistry 14 (June 18, 2018): 1459–81. http://dx.doi.org/10.3762/bjoc.14.124.

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Phosphorescent organometallic compounds based on heavy transition metal complexes (TMCs) are an appealing research topic of enormous current interest. Amongst all different fields in which they found valuable application, development of emitting materials based on TMCs have become crucial for electroluminescent devices such as phosphorescent organic light-emitting diodes (PhOLEDs) and light-emitting electrochemical cells (LEECs). This interest is driven by the fact that luminescent TMCs with long-lived excited state lifetimes are able to efficiently harvest both singlet and triplet electro-gen

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12

Bashilov, V. V., E. G. Mednikov, S. S. Kurasov, P. V. Petrovskii, N. K. Eremenko, and V. I. Sokolov. "Redox reactions involving low-valence transition metal complexes: Palladium and platinum phosphinecarbonyl clusters in the synthesis of binuclear compounds." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 36, no. 10 (1987): 2188–90. http://dx.doi.org/10.1007/bf00962024.

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13

Aleksanyan, Diana V., Svetlana G. Churusova, Ekaterina Yu Rybalkina, and Vladimir A. Kozlov. "Rhenium(I) Complexes with Pincer Ligands as a New Class of Potential Antitumor Agents." Proceedings 22, no. 1 (2019): 43. http://dx.doi.org/10.3390/proceedings2019022043.

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Transition metal complexes attract continuous research interest as potential antitumor agents. The most popular compounds are ruthenium, gold, titanium, osmium, iridium, zinc, and palladium complexes, which have already displayed cytotoxic features that are not typical for classical platinum-containing chemotherapeutic agents. Substantially lower attention is drawn to organometallic compounds of rhenium. However, the known examples of cytotoxic organometallic rhenium derivatives with bidentate heterocyclic, organophosphorus, labile alkoxide, and hydroxide ligands render further studies in this

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14

Czarnomysy, Robert, Anna Muszyńska, Jakub Rok, Zuzanna Rzepka, and Krzysztof Bielawski. "Mechanism of Anticancer Action of Novel Imidazole Platinum(II) Complex Conjugated with G2 PAMAM-OH Dendrimer in Breast Cancer Cells." International Journal of Molecular Sciences 22, no. 11 (2021): 5581. http://dx.doi.org/10.3390/ijms22115581.

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Transition metal coordination compounds play an important role in the treatment of neoplastic diseases. However, due to their low selectivity and bioavailability, as well as the frequently occurring phenomenon of drug resistance, new chemical compounds that could overcome these phenomena are still being sought. The solution seems to be the synthesis of new metal complexes conjugated with drug carriers, e.g., dendrimers. Numerous literature data have shown that dendrimers improve the bioavailability of the obtained metal complexes, solving the problem of their poor solubility and stability in a

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15

Baldwin, Jean, Ian S. Butler та Denis F. R. Gilson. "Pressure tuning IR and micro-raman spectra of solid zeiseߣs salt, kp[pt(η-C2H4)Cl4], and the related dimer, [Pt(η-C2H4)Cl2]2". Proceedings, annual meeting, Electron Microscopy Society of America 50, № 2 (1992): 1536–37. http://dx.doi.org/10.1017/s0424820100132315.

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Pressure-tuning vibrational spectroscopy using diamond-anvil cells is now well established as a useful technique for investigating the phase-transition behavior of inorganic and organic solids. Much of our recent research has been focused on organotransition metal compounds, especially metal carbonyls. The pressure dependences (dv/dP) of the v(CO) modes provide important information on the extent of #- backbonding between the metals and the carbonyl groups. We have now extended these high-presure studies to other #-acceptor ligands, including olefins. We report here the results of a high-press

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16

Janzen, Michael C., Michael C. Jennings, and Richard J. Puddephatt. "Self-assembly using stannylplatinum(IV) halide complexes as ligands for organotin halides." Canadian Journal of Chemistry 80, no. 11 (2002): 1451–57. http://dx.doi.org/10.1139/v02-093.

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The possibility of forming extended structures by self-association using transition metal halides as donors to organotin acceptors has been investigated. The stannylplatinum(IV) complex [PtClMe2(SnMe2Cl)(bu2bpy)] forms a 1:1 adduct [PtClMe2(SnMe2Cl)(bu2bpy)]·Me2SnCl2 with Me2SnCl2 in which the organoplatinum complex acts as a donor to the organotin halide. Similarly, [PtClMe2(SnMeCl2)(bu2bpy)] forms adducts [PtClMe2(SnMeCl2)(bu2bpy)]·MeSnCl3 or [PtClMe2(SnMeCl2)(bu2bpy)]·Me2SnCl2, and [{PtClMe2(bu2bpy)}2(µ-SnCl2)] forms [{PtClMe2(bu2bpy)}2(µ-SnCl2)]·Me2SnCl2. Structure determinations on select

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17

Peerey, Linda M., and Nenad M. Kostic. "Transition-metal compounds as new reagents for selective cross-linking of proteins. Synthesis and characterization of two bis(cytochrome c) complexes of platinum." Inorganic Chemistry 26, no. 13 (1987): 2079–83. http://dx.doi.org/10.1021/ic00260a014.

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18

Plinta, Hans-Jürgen, Ion Neda та Reinhard Schmutzler. "1.3-Dimethyl-1,3-diaza-2-R-5,6-benzo-2λ3-phosphorinan-4-one (R = F, Me2N, 2-Methylpiperidino, MeC(: 0 )N H -) als Liganden in Übergangsmetallkomplexen; Synthese und Struktur von Dichloro-Platin(II)- und Tetracarbonyl-Metall(O)- Koordinationsverbindungen (Metall = Cr, Mo und W) / 1.3-Dimethyl-1,3-diaza-2-R-5,6-benzo-2λ3-phosphorinan-4-ones (R = F, Me2N, 2-Methylpiperidino, MeC(: 0 )NH-) as Ligands in Transition-Metal Complexes; Synthesis and Structure of Dichloro-Platinum(II)- and Tetracarbonyl-Metal(0) Coordination Compounds (Metal = Cr, Mo and W)". Zeitschrift für Naturforschung B 49, № 1 (1994): 100–110. http://dx.doi.org/10.1515/znb-1994-0117.

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Abstract 1,3-Dimethyl-1,3-diaza-2-fluoro-5,6-benzo-1,3,2-phosphorinane-4-one (1) reacted with (COD)PtCl2 (COD = 1,5-cyclooctadiene) or K2PtCl4 to give the cis-dichloro-platinum(II) complex (2). The reactions of 1 with the tetracarbonyl norbornadiene derivatives of Cr, Mo and W furnished the complexes 3 - 6 . In the case of the chromium and tungsten complexes the trans-isomers 3 and 6 were formed, due to a cis-trans-isomerization. Room temperature and low temperature 31P NMR spectra of a mixture of 5 and 6 show no significant temperature dependence of the cis-trans equilibrium. The reaction of

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19

Grobe, Joseph, Kai Lütke-Brochtrup, Bernt Krebs, Mechtild Läge, Hans-Hermann Niemeyer, and Ernst-Ulrich Würthwein. "Alternativ-Liganden XXXVIII. [1] Neue Versuche zur Synthese von Pd(0)- und Pt(0)-Komplexen des Tripod-Phosphanliganden FSi(CH2CH2PMe2)3 / Alternative Ligands XXXVIII. [1] Further Attempts to Synthesize Pd(0) and Pt(0) Complexes with the Tripod Phosphane Ligand FSi(CH2CH2PMe2)3." Zeitschrift für Naturforschung B 62, no. 1 (2007): 55–65. http://dx.doi.org/10.1515/znb-2007-0109.

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The tripod phosphane ligand FSi(CH2CH2PMe2)3 (1) has been prepared again and attempts to generate F3CSi(CH2CH2PMe2)3 (2) were undertaken for the preparation of transition metal cage compounds of the type A(CCP)3M or A(CCP)3M-L (A = FSi, F3CSi). The photochemical addition of dimethylphosphane to trifluoromethyl-trivinylsilane, however, gave 1 instead of the expected CF3Sitripod ligand 2, obviously due to difluorocarbene elimination. 1 was used to prepare the chromium carbonyl derivative (CO)3Cr[(Me2PCH2CH2)3SiF] (3) from Cr(CO)3CHT, and 3 was characterized by NMR and IR spectroscopy. The novel

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20

Czarnomysy, Robert, Dominika Radomska, Olga Klaudia Szewczyk, Piotr Roszczenko, and Krzysztof Bielawski. "Platinum and Palladium Complexes as Promising Sources for Antitumor Treatments." International Journal of Molecular Sciences 22, no. 15 (2021): 8271. http://dx.doi.org/10.3390/ijms22158271.

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There is a need for new, safer, and more effective agents to treat cancer. Cytostatics that have transition metals at their core have attracted renewed interest from scientists. Researchers are attempting to use chemotherapeutics, such as cisplatin, in combination therapy (i.e., in order to enhance their effectiveness). Moreover, studies are being carried out to modify molecules, by developing them into multinuclear structures, linking different compounds to commonly used drugs, or encapsulating them in nanoparticles to improve pharmacokinetic parameters, and increase the selectivity of these

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Hopff, Sina M., Qifang Wang, Corazon Frias, et al. "A metal-free salalen ligand with anti-tumor and synergistic activity in resistant leukemia and solid tumor cells via mitochondrial pathway." Journal of Cancer Research and Clinical Oncology 147, no. 9 (2021): 2591–607. http://dx.doi.org/10.1007/s00432-021-03679-3.

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Abstract Purpose Since the discovery of the well-known cis-platin, transition metal complexes are highly recognized as cytostatic agents. However, toxic side effects of the metal ions present in the complexes may pose significant problems for their future development. Therefore, we investigated the metal-free salalen ligand WQF 044. Methods DNA fragmentations in leukemia (Nalm6) and solid tumor cells (BJAB, MelHO, MCF-7, RM82) proved the apoptotic effects of WQF 044, its overcoming of resistances and the cellular pathways that are affected by the substance. The apoptotic mechanisms finding wer

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22

DeStefano, Matthew R., and David K. Geiger. "A luminescent bis(pyridyl)-substituted benzimidazole platinum(II) complex exhibiting an intermolecular anagostic interaction." Acta Crystallographica Section C Structural Chemistry 73, no. 9 (2017): 697–702. http://dx.doi.org/10.1107/s2053229617011573.

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The photophysical properties of transition metal complexes of the 5,6-dimethyl-2-(pyridin-2-yl)-1-(pyridin-2-ylmethyl)-1H-benzimidazole ligand are of interest. Dichlorido[5,6-dimethyl-2-(pyridin-2-yl)-1-(pyridin-2-ylmethyl)-1H-benzimidazole-κ2 N 2,N 3]platinum(II), [PtCl2(C20H18N4)], is luminescent in the solid state at room temperature. The compound displays a distorted square-planar coordination geometry. The Pt—N(imidazole) bond length is shorter than the Pt—N(pyridine) bond length. The extended structure reveals that symmetry-related molecules display weak C—H...N, C—H...Cl, and C—H...Pt h

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23

SINGH, SANTOSH BAHADUR. "IRIDIUM CHEMISTRY AND ITS CATALYTIC APPLICATIONS: A BRIEF." Green Chemistry & Technology Letters 2, no. 4 (2016): 206. http://dx.doi.org/10.18510/gctl.2016.247.

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Iridium is very important element among the all transition metals with highest reported oxidation state i.e. +9 in gas phase existing species IrO4+. Instead of its less reactivity, it forms number of compounds having oxidation states between -3 to +9. It is second known densest element after osmium. Till now its toxicity and environmental impact is not much more reported and thus it may be use as green element in various fields of its application. Reason behinds it’s less toxicity and environmental impact may be due to its less reactivity and solubility. Corrosion and heat resistant properties

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Dardar, Fatima ezzahraa, Abdelaziz El jazouli, Abdessadek Lachgar, Micheal Gross, and Cynthia Day. "Vitreous and Crystalline Phosphates : elaboration and electrical properties." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1766. http://dx.doi.org/10.1107/s2053273314082333.

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Interest in mixed metals titanium phosphates, both in glass and crystalline forms, for their properties as ionic conductors or non-linear optical materials, has led to large number of studies of these materials [1-3]. Our investigation of Na2O – Li2O – CaO – TiO2 – P2O5 system led to the discovery of NaxLiyCazTit(PO4)3 solid solutions which exist in both glassy and crystalline forms. Here the preparation of NaxLiyCazTit(PO4)3 will be described. The compounds were structurally characterized by PXRD, and their chemical and physical characterization were completed using DTA, XRD, UV-visible, Rama

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25

Traub, Lukas, and Oliver Reiser. "Homogeneous visible light mediated transition metal catalysis other than Ruthenium and Iridium." Physical Sciences Reviews 4, no. 7 (2019). http://dx.doi.org/10.1515/psr-2017-0172.

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Abstract The field of photoredox chemistry is dominated by ruthenium- or iridium based metal complexes or organic dyes that are employed as catalysts. Other metal based coordination compounds provide a cost efficient alternative, however, the much shorter excited lifetimes generally observed for such complexes make their application more challenging. Nevertheless, a growing number of successful examples with metal complexes based on chromium, iron, nickel, zirconium, cerium, rhenium, platinum, uranium, and especially on copper exist, which is being reviewed in this chapter.

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Ricciardi, Loredana, and Massimo La Deda. "Recent advances in cancer photo-theranostics: the synergistic combination of transition metal complexes and gold nanostructures." SN Applied Sciences 3, no. 3 (2021). http://dx.doi.org/10.1007/s42452-021-04329-6.

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AbstractIn this mini review, we highlight advances in the last five years in light-activated cancer theranostics by using hybrid systems consisting of transition metal complexes (TMCs) and plasmonic gold nanostructures (AuNPs). TMCs are molecules with attractive properties and high potential in biomedical application. Due to their antiproliferative abilities, platinum-based compounds are currently first-choice drugs for the treatment of several solid tumors. Moreover, ruthenium, iridium and platinum complexes are well-known for their ability to photogenerate singlet oxygen, a highly cytotoxic

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"Biological Potency of New Benzimidazole Derived Imine Based Ligand and its Co(III), Ni(II), Cu(II) and Pt(II) Complexes: Synthesis, Structure, Antimicrobial, Antioxidant and BSA Interaction Studies." Biointerface Research in Applied Chemistry 11, no. 4 (2020): 11856–90. http://dx.doi.org/10.33263/briac114.1185611890.

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In this study, we report the synthesis and characterization of transition metal complexes (MC1, MC2, MC3, MC4) where M= Co(III), Ni(II), Cu(II) and Pt(II), respectively, using a new imine-based ligand, 2-{(E)-[(1H-benzimidazol-2-ylmethyl)imino]methyl}-4-bromophenol (HBMB). The molecular structure of the HBMB ligand and its complexes were confirmed by various analytical techniques such as UV-Vis, FT-IR, 1H, 13C-NMR, ESR, TGA/DTA, LC-MS, molar conductance, and magnetic moment measurements. The spectral data of complexes recommended tridentate binding modes of HBMB ligand and suggested an octahed

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PEEREY, L. M., and N. M. KOSTIC. "ChemInform Abstract: Transition-Metal Compounds as New Reagents for Selective Cross-Linking of Proteins. Synthesis and Characterization of Two Bis(cytochrome c) Complexes of Platinum." ChemInform 18, no. 45 (1987). http://dx.doi.org/10.1002/chin.198745295.

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Taullaj, Fioralba, Ulrich Fekl, and Alan J. Lough. "Platinum(IV) complexes of a bulky and exceptionally donating alkyl: 2-adamantyl." Canadian Journal of Chemistry, May 25, 2020, 1–7. http://dx.doi.org/10.1139/cjc-2020-0158.

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The 2-adamantyl (2-Ad) group is a particularly challenging alkyl to install on a transition metal, with the only reported 2-Ad complexes of platinum being those of Pt(II). The question of whether 2-Ad complexes with platinum in the oxidation state +IV can be made and whether they are stable is answered here. The Pt(IV) compound trans-[(bpy)PtMe2(2-Ad)I] (bpy = 2,2′-bipyridine) was synthesized via oxidative addition of iodomethane to [(COD)PtMe(2-Ad)] (COD = 1,5-cyclooctadiene) in the presence of bpy. Iodide abstraction with silver triflate (triflate anion, OTf− = CF3SO3−) produced trans-[(bpy)

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