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Toyama M, Takizawa T, Morita I, Nagao N, Kuramochi Y, Ishida H. Syntheses and Characterization of a Pair of Isomers of Heteroleptic Bis(Bidentate) Ruthenium(II) Complexes with Two Different Monodentate Ligands. Chemistry 2019; 25:16582-16590. [PMID: 31596008 DOI: 10.1002/chem.201903706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/18/2019] [Indexed: 01/24/2023]
Abstract
Two isomers of heteroleptic bis(bidentate) ruthenium(II) complexes with dimethyl sulfoxide (dmso) and chloride ligands, trans(Cl,Nbpy )- and trans(Cl,NHdpa )-[Ru(bpy)Cl(dmso-S)(Hdpa)]+ (bpy: 2,2'-bipyridine; Hdpa: di-2-pyridylamine), are synthesized. This is the first report on the selective synthesis of a pair of isomers of cis-[Ru(L)(L')XY]n+ (L≠L': bidentate ligands; X≠Y: monodentate ligands). The structures of the ruthenium(II) complexes are clarified by means of X-ray crystallography, and the signals in the 1 H NMR spectra are assigned based on 1 H-1 H COSY spectra. The colors of the two isomers are clearly different in both the solid state and solution: the trans(Cl,Nbpy ) isomer has a deep red color, whereas the trans(Cl,NHdpa ) isomer is yellow. Although both complexes have intense absorption bands at λ≈440-450 nm, only the trans(Cl,Nbpy ) isomer has a shoulder band at λ≈550 nm. DFT calculations indicate that the LUMOs of both isomers are the π* orbitals in the bpy ligand, and that the LUMO level of the trans(Cl,Nbpy ) isomer is lower than that of the trans(Cl,NHdpa ) isomer due to the trans effect of the Cl ligand; thus resulting in the appearance of the shoulder band. The HOMO levels are almost the same in both isomers. The energy levels are experimentally supported by cyclic voltammograms, in which these isomers have different reduction potentials and similar oxidation potentials.
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Affiliation(s)
- Mari Toyama
- Current address: Osaka Prefecture University College of Technology, 26-12 Saiwaicho, Neyagawa, Osaka, 572-8572, Japan.,Department of Chemistry of Functional Molecules, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Higashinada, Kobe, 658-8501, Japan.,Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Takako Takizawa
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Itaru Morita
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Noriharu Nagao
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Yusuke Kuramochi
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa, 252-0373, Japan.,Current address: Department of Chemistry, Faculty of Science Division II, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Hitoshi Ishida
- Department of Chemistry, Graduate School of Science, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa, 252-0373, Japan
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Toyama M, Fujimoto D, Matsuoka Y, Asano Y, Nagao N. Mono(2,2′‐bipyridyl)Ru
II
Complex with Four Dimethyl Sulfoxide Ligands as Precursor for
cis
‐Bis‐heteroleptic Ru
II
Complex: Syntheses, Structures, and Substitution Reactions. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mari Toyama
- Department of Chemistry of Functional Molecules Faculty of Science and Engineering Konan University 8‐9‐1 Okamoto 658‐8501 Higashinada, Kobe Japan
| | - Daichi Fujimoto
- Department of Chemistry of Functional Molecules Faculty of Science and Engineering Konan University 8‐9‐1 Okamoto 658‐8501 Higashinada, Kobe Japan
| | - Yumi Matsuoka
- Department of Chemistry of Functional Molecules Faculty of Science and Engineering Konan University 8‐9‐1 Okamoto 658‐8501 Higashinada, Kobe Japan
| | - Yuki Asano
- Department of Chemistry of Functional Molecules Faculty of Science and Engineering Konan University 8‐9‐1 Okamoto 658‐8501 Higashinada, Kobe Japan
| | - Noriharu Nagao
- Department of Applied Chemistry School of Science and Technology Meiji University 1‐1‐1 Higashimita 214‐8571 Tama, Kawasaki Kanagawa Japan
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3
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Bratsos I, Alessio E. The Pivotal Role of Ru-dmso Compounds in the Discovery of Well-Behaved Precursors. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800469] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ioannis Bratsos
- Institute of Nanoscience and Nanotechnology (INN); Department of Physical Chemistry; NCSR “DEMOKRITOS”; Aghia Paraskevi Attikis 153 10 Athens Greece
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
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4
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Higuchi T, Tagawa R, Iimuro A, Akiyama S, Nagae H, Mashima K. Tunable Ligand Effects on Ruthenium Catalyst Activity for Selectively Preparing Imines or Amides by Dehydrogenative Coupling Reactions of Alcohols and Amines. Chemistry 2017; 23:12795-12804. [DOI: 10.1002/chem.201701342] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Takafumi Higuchi
- Department of Chemistry, Graduate School of Engineering Science; Osaka University; Toyonaka Osaka 560-8531 Japan
| | - Risa Tagawa
- Department of Chemistry, Graduate School of Engineering Science; Osaka University; Toyonaka Osaka 560-8531 Japan
| | - Atsuhiro Iimuro
- Department of Chemistry, Graduate School of Engineering Science; Osaka University; Toyonaka Osaka 560-8531 Japan
| | - Shoko Akiyama
- Department of Chemistry, Graduate School of Engineering Science; Osaka University; Toyonaka Osaka 560-8531 Japan
| | - Haruki Nagae
- Department of Chemistry, Graduate School of Engineering Science; Osaka University; Toyonaka Osaka 560-8531 Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science; Osaka University; Toyonaka Osaka 560-8531 Japan
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5
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Battistin F, Balducci G, Iengo E, Demitri N, Alessio E. Neutral 1,3,5-Triaza-7-phosphaadamantane-Ruthenium(II) Complexes as Precursors for the Preparation of Highly Water-Soluble Derivatives. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600084] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Federica Battistin
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Gabriele Balducci
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Elisabetta Iengo
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Nicola Demitri
- Elettra - Synchrotron Light Source; S.S. 14 Km 163.5, Area Science Park 34149 Basovizza, Trieste Italy
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
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7
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Traven K, Sinreih M, Stojan J, Seršen S, Kljun J, Bezenšek J, Stanovnik B, Turel I, Rižner TL. Ruthenium complexes as inhibitors of the aldo-keto reductases AKR1C1-1C3. Chem Biol Interact 2014; 234:349-59. [PMID: 25446855 DOI: 10.1016/j.cbi.2014.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/22/2014] [Accepted: 11/07/2014] [Indexed: 11/16/2022]
Abstract
The human aldo-keto reductases (AKRs) from the 1C subfamily are important targets for the development of new drugs. In this study, we have investigated the possible interactions between the recombinant AKR1C enzymes AKR1C1-AKR1C3 and ruthenium(II) complexes; in particular, we were interested in the potential inhibitory actions. Five novel ruthenium complexes (1a, 1b, 2a, 2b, 2c), two precursor ruthenium compounds (P1, P2), and three ligands (a, b, c) were prepared and included in this study. Two different types of novel ruthenium(II) complexes were synthesized. First, bearing the sulphur macrocycle [9]aneS3, S-bonded dimethylsulphoxide (dmso-S), and an N,N-donor ligand, with the general formula of [Ru([9]aneS3)(dmso)(N,N-ligand)](PF6)2 (1a, 1b), and second, with the general formula of [(η(6)-p-cymene)RuCl(N,N-ligand)]Cl (2a, 2b, 2c). All of these synthesized compounds were characterized by high-resolution NMR spectroscopy, X-ray crystallography (compounds a, b, c, 1a, 1b) and other standard physicochemical methods. To evaluate the potential inhibitory actions of these compounds on the AKR1C enzymes, we followed enzymatically catalyzed oxidation of the substrate 1-acenaphthenol by NAD(+) in the absence and presence of various micromolar concentrations of the individual compounds. Among 10 compounds, one ruthenium complex (2b) and two precursor ruthenium compounds (P1, P2) inhibited all three AKR1C enzymes, and one ruthenium complex (2a) inhibited only AKR1C3. Ligands a, b and c revealed no inhibition of the AKR1C enzymes. All four of the active compounds showed multiple binding with the AKR1C enzymes that was characterized by an initial instantaneous inhibition followed by a slow quasi-irreversible step. To the best of our knowledge, this is the first study that has examined interactions between these AKR1C enzymes and ruthenium(II) complexes.
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Affiliation(s)
- Katja Traven
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Maša Sinreih
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia
| | - Jure Stojan
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia
| | - Sara Seršen
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Jakob Kljun
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Jure Bezenšek
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Branko Stanovnik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia.
| | - Tea Lanišnik Rižner
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia.
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Coe BJ, Helliwell M, Peers MK, Raftery J, Rusanova D, Clays K, Depotter G, Brunschwig BS. Synthesis, Structures, and Optical Properties of Ruthenium(II) Complexes of the Tris(1-pyrazolyl)methane Ligand. Inorg Chem 2014; 53:3798-811. [DOI: 10.1021/ic500145r] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Benjamin J. Coe
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Madeleine Helliwell
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Martyn K. Peers
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - James Raftery
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Daniela Rusanova
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Koen Clays
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Flanders, Belgium
| | - Griet Depotter
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Flanders, Belgium
| | - Bruce S. Brunschwig
- Molecular
Materials Research Center, Beckman Institute, MC 139-74, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
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9
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Coe BJ, Raftery J, Rusanova D. Tris-[4-(di-methyl-amino)-pyridine][tris(pyra-zol-1-yl)methane]--ruthenium(II) bis-(hexa-fluorido-phosphate) diethyl ether monosolvate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m549-50. [PMID: 24098179 PMCID: PMC3790357 DOI: 10.1107/s1600536813025245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 09/11/2013] [Indexed: 11/12/2022]
Abstract
In the title compound, [Ru(C10H10N6)(C7H10N2)3](PF6)2·C4H10O, the RuII cation is coordinated by one tris(1-pyrazolyl)methane (Tpm) and three dimethylaminopyridine (dmap) ligands in a slightly distorted octahedral geometry. The asymmetric unit consists of one complex cation, two hexafluoridophosphate anions and one diethyl ether solvent molecule in general positions. Although quite a large number of ruthenium complexes of the facially coordinating tridentate Tpm ligand have been structurally characterized, this is only the second one containing three pyridyl co-ligands. The average Ru—N(Tpm) distance is 2.059 (12) Å, while the average Ru—N(dmap) [dmap = 4-(dimethylamino)pyridine] distance is somewhat longer at 2.108 (13) Å. The orientation of the dmap ligands varies greatly, with dihedral angles between the pyridyl and opposite pyrazolyl rings of 14.3 (2), 23.2 (2) and 61.2 (2)°.
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Affiliation(s)
- Benjamin J Coe
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK
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10
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Finazzi I, Bratsos I, Gianferrara T, Bergamo A, Demitri N, Balducci G, Alessio E. Photolabile RuIIHalf-Sandwich Complexes Suitable for Developing “Caged” Compounds: Chemical Investigation and Unexpected Dinuclear Species with Bridging Diamine Ligands. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300792] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Gamble AJ, Lynam JM, Thatcher RJ, Walton PH, Whitwood AC. cis-1,3,5-Triaminocyclohexane as a facially capping ligand for ruthenium(II). Inorg Chem 2013; 52:4517-27. [PMID: 23517123 DOI: 10.1021/ic302819j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Reaction of cis-[RuCl2(DMSO-S)3(DMSO-O)] with cis-1,3,5-triaminocyclohexane (tach) results in the formation of [RuCl(tach)(DMSO-S)2]Cl, a valuable precursor for a wide range of other tach-containing Ru complexes. Reaction of [RuCl(tach)(DMSO-S)2]Cl with the chelating nitrogen-based ligands (N-N = bipyridine, phenanthroline, and ethylenediamine) affords [Ru(N-N)(DMSO-S)2(tach)][Cl]2. A similar reaction between [RuCl(tach)(DMSO-S)]Cl with the chelating phosphorus-based ligands (P-P = dppm, dppe, dppp, dppb, dppv, and dppben) leads to the formation of [RuCl(P-P)(tach)]Cl. The structures of 10 examples of the tach-containing complexes have been determined by single crystal X-ray diffraction. An examination of the structural metrics obtained from these studies indicates that the tach ligand is a strong sigma donor. In addition, the presence of the NH2 groups in the tach ligand allow for participation in hydrogen bonding further modulating the coordinative properties of the ligand.
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Affiliation(s)
- Aimee J Gamble
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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Madureira J, Santos TM. Solution and solid-state spectroscopic characterization of chloro dimethylsulfoxide polythioether ruthenium(II) complexes, complemented with DFT calculations in the gas phase. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.770846] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- João Madureira
- a Departamento de Química e CICECO , Universidade de Aveiro , Aveiro , Portugal
- b Department of Chemistry , Virginia Commonwealth University , Richmond , VA , USA
| | - Teresa M. Santos
- a Departamento de Química e CICECO , Universidade de Aveiro , Aveiro , Portugal
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PATTANAYAK POULAMI, PATRA DEBPRASAD, PRATIHAR JAHARLAL, BURROWS ANDREW, MAHON MARYF, CHATTOPADHYAY SURAJIT. Osmium and cobalt complexes incorporating facially coordinated N,N,O donor azo-imine ligands: Redox and catalytic properties. J CHEM SCI 2013. [DOI: 10.1007/s12039-012-0342-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Carrión MC, Sepúlveda F, Jalón FA, Manzano BR, Rodríguez AM. Areneruthenium(II) Complexes Containing Bispyrazolylmethane Ligands: Effect of the Ligand Substituents on the Formation of an Isomer and on the Fluxional Behaviour. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200884] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Marques J, Fernandes JA, Almeida Paz FA, Marques MPM, Braga SS. Isolation, crystal structure, and cytotoxicity on osteosarcoma of a ruthenium(III) complex with coordinated acetonitrile. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.696624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Joana Marques
- a Departamento de Química & CICECO , Universidade de Aveiro , 3810-193 Aveiro , Portugal
| | - José A. Fernandes
- a Departamento de Química & CICECO , Universidade de Aveiro , 3810-193 Aveiro , Portugal
| | - Filipe A. Almeida Paz
- a Departamento de Química & CICECO , Universidade de Aveiro , 3810-193 Aveiro , Portugal
| | - Maria Paula M. Marques
- b Departamento de Bioquímica, Faculdade de Ciências e Tecnologia , Universidade de Coimbra , PO Box 3126, 3001-401 Coimbra , Portugal
| | - Susana S. Braga
- a Departamento de Química & CICECO , Universidade de Aveiro , 3810-193 Aveiro , Portugal
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Levason W, Reid G. Hetero-Crown Ethers-Synthesis and Metal-Binding Properties of Macrocyclic Ligands Bearing Group 16 (S, Se, Te) Donor Atoms. Supramol Chem 2012. [DOI: 10.1002/9780470661345.smc049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Cain MF, Glueck DS, Golen JA, Rheingold AL. Asymmetric Synthesis and Metal Complexes of a C3-Symmetric P-Stereogenic Triphosphine, (R)-MeSi(CH2PMe(t-Bu))3 (MT-Siliphos). Organometallics 2012. [DOI: 10.1021/om200930k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthew F. Cain
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory,
Hanover, New Hampshire 03755, United States
| | - David S. Glueck
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory,
Hanover, New Hampshire 03755, United States
| | - James A. Golen
- Department of
Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla,
California 92093, United States
| | - Arnold L. Rheingold
- Department of
Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla,
California 92093, United States
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Bratsos I, Mitri E, Ravalico F, Zangrando E, Gianferrara T, Bergamo A, Alessio E. New half sandwich Ru(ii) coordination compounds for anticancer activity. Dalton Trans 2012; 41:7358-71. [DOI: 10.1039/c2dt30654a] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bratsos I, Urankar D, Zangrando E, Genova-Kalou P, Košmrlj J, Alessio E, Turel I. 1-(2-Picolyl)-substituted 1,2,3-triazole as novel chelating ligand for the preparation of ruthenium complexes with potential anticancer activity. Dalton Trans 2011; 40:5188-99. [DOI: 10.1039/c0dt01807d] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Janzen DE, VanDerveer DG, Mehne LF, Grant GJ. Ruthenium(II) thiacrown complexes: Synthetic, spectroscopic, electrochemical, DFT, and single crystal X-ray structural studies of [Ru([15]aneS5)Cl](PF6). Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.08.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Miller PW, White AJ. The preparation of multimetallic complexes using sterically bulky N-centred tripodal dialkyl phosphino ligands. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.01.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Walker JM, McEwan A, Pycko R, Tassotto ML, Gottardo C, Th'ng J, Wang R, Spivak GJ. [Tris(pyrazolyl)methane]ruthenium Complexes Capable of Inhibiting Cancer Cell Growth. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900766] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gianferrara T, Bratsos I, Iengo E, Milani B, Ostrić A, Spagnul C, Zangrando E, Alessio E. Synthetic strategies towards ruthenium-porphyrin conjugates for anticancer activity. Dalton Trans 2009:10742-56. [PMID: 20023904 DOI: 10.1039/b911393b] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conjugation of porphyrins to metal fragments is a strategy for making new compounds that are expected to combine the phototoxicity and the tumour-localization properties of the porphyrin chromophore with the cytotoxicity of the metal fragment for additive antitumour effect. We report here the preparation of new classes of porphyrin-ruthenium conjugates with potential bio-medical applications. Ruthenium was chosen because several Ru compounds have shown promising anticancer activity. The conjugation with the porphyrin moiety was accomplished either through peripheral pyridyl rings (e.g.meso-4'-tetrapyridylporphyrin, 4'TPyP) or through bpy units (e.g.meso-(p-bpy-phenyl)porphyrins, bpy(n)-PPs, n = 1-4). The number of Ru fragments attached to the porphyrins ranges from 1 to 4 and the total charge of the conjugates from -4 to +8. Different types of peripheral fragments, both Ru(III) and Ru(II), have been used: in some cases they are structurally similar to established anticancer compounds. Examples are [Na](4)[4'TPyP{trans-RuCl(4)(dmso-S)}(4)] (2), that bears four NAMI-type Ru(III) fragments, or [4'TPyP{Ru([9]aneS3)(en)}(4)][CF(3)SO(3)](8) (3) and [bpy(4)-PP{Ru([9]aneS3)(dmso-S)}(4)][CF(3)SO(3)](8) (9) (en = ethane-1,2-diamine, [9]aneS3 = 1,4,7-trithiacyclononane) that have four half-sandwich Ru(II) compounds. The Ru fragments may either contain one or more labile ligands, such as in 2 or in 9, or be coordinatively saturated and substitutionally inert, such as in 3 or in [bpy(4)-PP{Ru([12]aneS4)}(4)][CF(3)SO(3)](8) (11) ([12]aneS4 = 1,4,7,10-tetrathiacyclododecane). Most of the ruthenium-porphyrin conjugates described in this work are soluble--at least moderately--in aqueous solution and are thus suitable for biological investigations, in particular for cytotoxicity and photo-cytotoxicity tests.
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Affiliation(s)
- Teresa Gianferrara
- Department of Pharmaceutical Sciences, University of Trieste, 34127, Trieste, Italy
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Zangrando E, Kulisic N, Ravalico F, Bratsos I, Jedner S, Casanova M, Alessio E. New ruthenium(II) precursors with the tetradentate sulfur macrocycles tetrathiacyclododecane ([12]aneS4) and tetrathiacyclohexadecane ([16]aneS4) for the construction of metal-mediated supramolecular assemblies. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.02.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Green JC, Hector AL, Hill AF, Lin S, Wilton-Ely JDET. Synthetic and Computational Studies of Thiocarbonyl/σ-Organyl Coupling Reactions. Organometallics 2008. [DOI: 10.1021/om800637y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jennifer C. Green
- Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom, School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom, and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, ACT 0200, Australia
| | - Andrew L. Hector
- Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom, School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom, and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, ACT 0200, Australia
| | - Anthony F. Hill
- Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom, School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom, and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, ACT 0200, Australia
| | - Sibo Lin
- Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom, School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom, and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, ACT 0200, Australia
| | - James D. E. T. Wilton-Ely
- Chemistry Research Laboratories, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom, School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom, and Research School of Chemistry, Institute of Advanced Studies, Australian National University, Canberra, ACT 0200, Australia
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Casarin M, Forrer D, Garau F, Pandolfo L, Pettinari C, Vittadini A. Density Functional Theory Study of the Binding Capability of Tris(pyrazol-1-yl)methane toward Cu(I) and Ag(I) Cations. J Phys Chem A 2008; 112:6723-31. [DOI: 10.1021/jp801902c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maurizio Casarin
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy, Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Camerino (MC) 62032, Italy, Istituto di Scienze Molecolari del CNR, Padova 35131, Italy, and Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali, Firenze 50121, Italy
| | - Daniel Forrer
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy, Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Camerino (MC) 62032, Italy, Istituto di Scienze Molecolari del CNR, Padova 35131, Italy, and Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali, Firenze 50121, Italy
| | - Federica Garau
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy, Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Camerino (MC) 62032, Italy, Istituto di Scienze Molecolari del CNR, Padova 35131, Italy, and Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali, Firenze 50121, Italy
| | - Luciano Pandolfo
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy, Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Camerino (MC) 62032, Italy, Istituto di Scienze Molecolari del CNR, Padova 35131, Italy, and Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali, Firenze 50121, Italy
| | - Claudio Pettinari
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy, Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Camerino (MC) 62032, Italy, Istituto di Scienze Molecolari del CNR, Padova 35131, Italy, and Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali, Firenze 50121, Italy
| | - Andrea Vittadini
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Padova 35131, Italy, Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Camerino (MC) 62032, Italy, Istituto di Scienze Molecolari del CNR, Padova 35131, Italy, and Consorzio Interuniversitario di Scienza e Tecnologia dei Materiali, Firenze 50121, Italy
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Franklin BR, Herrick RS, Ziegler CJ, Cetin A, Barone N, Condon LR. Reactions of the Re(CO)3(H2O)3(+) synthon with monodentate ligands under aqueous conditions. Inorg Chem 2008; 47:5902-9. [PMID: 18510286 DOI: 10.1021/ic800363w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of ammonia, pyridine (py), N-methyl imidazole (N-MeIm), tetrahydrothiophene (tht), and piperidine (pip) with Re(CO) 3(H 2O) 3 (+), 1 ( + ), were investigated employing aqueous conditions under atmospheric dioxygen. The reaction of [ 1]Br in aqueous ammonia led to [Re(CO) 3(NH 3) 3]Br ([ 2]Br) as the only product isolated. For the aqueous reactions of [ 1]Br with py, N-MeIm, and tht, mixtures of products are formed because of competition between the bromide and added ligand, even when the ligand is present in excess. Substitution of the PF 6 (-) anion for Br (-) leads to the clean formation of [Re(CO) 3L 3][PF 6] ([ 3][PF 6]-[ 5][PF 6]) for py, N-MeIm, and tht, respectively, as the only products observed. Reaction of [ 1][PF 6] with pip produces the dimeric species, (pip)(CO) 3Re(micro-OH) 2Re(CO) 3(pip), 6. Reactions of [ 1]Br were also performed in methanol for comparison purposes. The reaction with pip in this solvent led to the analogous dimer, (pip)(CO) 3Re(micro-OMe) 2Re(CO) 3(pip), 7; however, reactions with py, N-MeIm, and tht gave Re(CO) 3L 2Br, 8- 10, respectively, as the only products. The crystal structures of compounds [ 2]Br- 10 are reported.
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Affiliation(s)
- Brenton R Franklin
- Department of Chemistry, College of the Holy Cross, Worcester, Massachusetts 01610, USA
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Cyclic tetranuclear half-sandwich ruthenium(II) complexes with 4,7-phenanthroline and hydroxo bridges: Crystal structure, solution behaviour and binding to nucleosides. J Inorg Biochem 2008; 102:1025-32. [DOI: 10.1016/j.jinorgbio.2007.11.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2007] [Revised: 11/05/2007] [Accepted: 11/21/2007] [Indexed: 11/17/2022]
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Bratsos I, Jedner S, Bergamo A, Sava G, Gianferrara T, Zangrando E, Alessio E. Half-sandwich RuII[9]aneS3 complexes structurally similar to antitumor-active organometallic piano-stool compounds: Preparation, structural characterization and in vitro cytotoxic activity. J Inorg Biochem 2008; 102:1120-33. [DOI: 10.1016/j.jinorgbio.2008.01.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 12/31/2007] [Accepted: 01/02/2008] [Indexed: 10/22/2022]
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Bratsos I, Bergamo A, Sava G, Gianferrara T, Zangrando E, Alessio E. Influence of the anionic ligands on the anticancer activity of Ru(II)–dmso complexes: Kinetics of aquation and in vitro cytotoxicity of new dicarboxylate compounds in comparison with their chloride precursors. J Inorg Biochem 2008; 102:606-17. [DOI: 10.1016/j.jinorgbio.2007.10.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Revised: 10/13/2007] [Accepted: 10/16/2007] [Indexed: 10/22/2022]
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Carrión MC, Jalón FA, Manzano BR, Rodríguez AM, Sepúlveda F, Maestro M. (Arene)ruthenium(II) Complexes Containing Substituted Bis(pyrazolyl)methane Ligands – Catalytic Behaviour in Transfer Hydrogenation of Ketones. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700267] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bratsos I, Birarda G, Jedner S, Zangrando E, Alessio E. Half-sandwich RuII-[9]aneS3 complexes with dicarboxylate ligands: synthesis, characterization and chemical behavior. Dalton Trans 2007:4048-58. [PMID: 17828366 DOI: 10.1039/b707011j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim of further developing the structure-activity relationship in biologically active half-sandwich Ru(ii)-[9]aneS(3) complexes ([9]aneS(3)=1,4,7-trithiacyclononane), a series of new mono- and dinuclear complexes bearing the chelating dicarboxylate ligands oxalate (ox), malonate (mal) and methylmalonate (mmal), have been synthesized and studied. Treatment of the precursor [Ru([9]aneS(3))(dmso)(3)][CF(3)SO(3)](2) (7) with equivalent amounts of K(2)(dicarb) afforded the corresponding neutral complexes with the general formula [Ru([9]aneS(3))(dmso-S)(eta(2)-dicarb)] (where dicarb=ox (1), mal (2) and mmal (3)), while using half an equivalent of K(2)(ox), the symmetric dimer [{Ru([9]aneS(3))(dmso-S)}(2)(mu-eta(4)-ox)][CF(3)SO(3)](2) (4) was isolated. The reaction of with the oxalato complex fac-[Ru(dmso-S)(3)(dmso-O)(eta(2)-ox)] (9) yielded two asymmetric dimers, namely [{Ru([9]aneS(3))(dmso-S)}(mu-eta(4)-ox){fac-Ru(dmso-S)(3)(CF(3)SO(3))}][CF(3)SO(3)] (5) and [{Ru([9]aneS(3))(dmso-S)}(mu-eta(4)-ox){fac-Ru(dmso-S)(3)(dmso-O)}][CF(3)SO(3)](2) (6), depending on the reaction conditions. All new complexes were structurally characterized, both in solution (by NMR spectroscopy) and in the solid state (by X-ray crystallography). The chemical behavior of the complexes in aqueous solution was studied by UV-Vis and NMR spectroscopy in view of their potential antitumor activity: the monomers partially release a dmso ligand to yield the monofunctional aqua adduct [Ru([9]aneS(3))(eta(2)-dicarb)(H(2)O)], while the dimers rapidly open up the oxalato bridge to give two mononuclear fragments. Splitting of the asymmetric dimers 5 and 6 occurs selectively and the ox moiety remains bonded to the fac-Ru(dmso-S)(3) fragment. A detailed comparison of the structural and chemical features of 1-6 with those of similar dicarboxylate complexes possessing the fac-Ru(dmso-S)(3) fragment in place of Ru([9]aneS(3)) allows us to draw a number of general conclusions on the binding preferences of dicarb ligands on the octahedral Ru(II) center.
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Affiliation(s)
- Ioannis Bratsos
- Dipartimento di Scienze Chimiche, Università di Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
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Bravo J, Castro J, García‐Fontán S, Rodríguez‐Martínez MC, Rodríguez‐Seoane P. New Dinuclear Face‐ and Edge‐Sharing Bioctahedral Ruthenium Compounds Containing 1,2‐Bis(diphenylphosphanyloxy)ethane. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jorge Bravo
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986‐813798
| | - Jesús Castro
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986‐813798
| | - Soledad García‐Fontán
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986‐813798
| | - M. Carmen Rodríguez‐Martínez
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986‐813798
| | - Pilar Rodríguez‐Seoane
- Departamento de Química Inorgánica, Facultade de Química, Universidade de Vigo, 36310 Vigo, Spain, Fax: +34‐986‐813798
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Casanova M, Zangrando E, Munini F, Iengo E, Alessio E. fac-[Re(CO)3(dmso-O)3](CF3SO3): a new versatile and efficient Re(i) precursor for the preparation of mono and polynuclear compounds containing fac-[Re(CO)3]+ fragments. Dalton Trans 2006:5033-45. [PMID: 17060989 DOI: 10.1039/b609853c] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We show here that the new complex fac-[Re(CO)3(dmso-O)3](CF3SO3) (1), efficiently prepared in one step from [ReBr(CO)5] and featuring a broad range of solubility, is, in general, a better precursor for the one-step synthesis of mono- and polynuclear inorganic compounds containing fac-[Re(CO)3]+ fragments compared to the commonly used (NEt4)2fac-[ReBr3(CO)3] and fac-[Re(CO)3(CH3CN)3](Y) (Y = PF6, BF4, ClO4) species. Compound 1 is the first example of a Re(I)-dmso complex structurally characterized and confirms the rule that dmso is always O-bonded when trans to CO. The reactivity of 1 was tested in the one-step preparation of several new and known complexes. The O-bonded sulfoxides of 1 are replaced under mild conditions by tri- (L3) and bidentate ligands (L2) to produce fac-[Re(CO)3(L3)]+ and fac-[Re(CO)3(L2)(dmso-O)]+ compounds, respectively. An excess of monodentate ligands (L) and more forcing conditions are needed to prepare fac-[Re(CO)3(L)3]+ compounds. The new compounds include fac-[Re(CO)3(bipy)(dmso-O)](CF3SO3) (4), that turned out to be an excellent precursor for binding the luminescent fac-[Re(CO)3(bipy)]+ fragment to polytopic ligands for the construction of more elaborate assemblies. One example reported here is the two-step preparation of fac-[{Re(CO)3(bipy)}(mu-4,4'-bipy){Ru(TPP)(CO)}](CF3SO3) (8) (TPP = tetraphenylporphyrin). The X-ray structures of the new compounds 1, 4, of the bis-porphyrin complex fac-[Re(CO)3Cl(4'MPyP)2] (13) (4'MPyP = 5-(4'pyridyl)-10,15,20-triphenylporphyrin), and of the rhenium-cyclophane [{(CO)3Re(mu-OH)2Re(CO)3}2(micro-4,4'-bipy)2] (15), among others, are described. Compound 1 might find useful applications in supramolecular chemistry (metal-mediated assembly of large architectures), in the in situ preparation of stable Re compounds to be used in nuclear medicine, and for the labeling of biomolecules.
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Affiliation(s)
- Massimo Casanova
- Dipartimento di Scienze Chimiche, Università di Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
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Is the Aromatic Fragment of Piano-Stool Ruthenium Compounds an Essential Feature for Anticancer Activity? The Development of New RuII-[9]aneS3 Analogues. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200500210] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bratsos I, Zangrando E, Serli B, Katsaros N, Alessio E. The unprecedented bridging coordination mode of 1,1-cyclobutane dicarboxylate (µ-cbdc-O,O′) stabilized by intramolecular hydrogen bonds in ruthenium(ii) complexes. Dalton Trans 2005:3881-5. [PMID: 16311642 DOI: 10.1039/b503412d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The 1,1-cyclobutane dicarboxylate ligand (cbdc), that normally binds to metal centres as a chelate (eta(2)-cbdc-O,O'), prefers to bind in an unprecedented bridging fashion (micro-cbdc-O,O') on cationic Ru(ii) centres bearing ancillary ligands (e.g. H(2)O, NH(3)) capable of making intramolecular H-bonds with the non-coordinated oxygen atoms of the carboxylate groups. Thus, the thermodynamic product of the reaction between cis,fac-[RuCl(2)(dmso-S)(3)(dmso-O)]() and cbdc in a number of different reaction conditions is the dinuclear species with two bridging cbdc units fac-[Ru(micro-cbdc-O,O')(dmso-S)(3)(H(2)O)](2) (2). Similarly, reaction of cis,fac-[RuCl(2)(dmso-S)(3)(NH(3))] (3) with cbdc yielded the corresponding dinuclear species fac-[Ru(micro-cbdc-O,O')(dmso-S)(3)(NH(3))](2) (4), in which ammonia occupies the position of the water molecule in 2. Both dinuclear species 2 and 4 were characterized by X-ray crystallography and have an anti geometry with respect to the H(2)O or NH(3) ligands. The results from the X-ray studies are consistent with the NMR spectroscopic data, indicating that the dinuclear structures observed in the solid state are maintained in solution. The mononuclear anionic complex with a chelating cbdc unit, K{fac-[RuCl(eta(2)-cbdc-O,O')(dmso-S)(3)]}(5), was isolated under appropriate conditions form the reaction of 1 with K(2)(cbdc) and was demonstrated to be an intermediate in the formation of 2.
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Affiliation(s)
- Ioannis Bratsos
- Institute of Physical Chemistry, NCSR Demokritos, 15310 Ag. Paraskevi, Athens, Greece.
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