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Rezaul Haque M, Mahbub Alam M, Kamal Hossain M, Ghosh S, Tocher DA, Mobin SM, Kabir SE. Reactivity of unsaturated [HOs3(CO)8{µ3-Ph2PCH2PPh(C6H4)}] towards activated alkynes RC CR (R=CO2Et, CO2Me). Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Begum SA, Chowdhury MAH, Ghosh S, Tocher DA, Richmond MG, Yang L, Hardcastle KI, Rosenberg E, Kabir SE. Experimental and computational preference for phosphine regioselectivity and stereoselective tripodal rotation in HOs 3(CO) 8(PPh 3) 2(μ-1,2-N,C-η 1,κ 1-C 7H 4NS). RSC Adv 2018; 8:32672-32683. [PMID: 35547690 PMCID: PMC9086258 DOI: 10.1039/c8ra07400c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 09/12/2018] [Indexed: 11/22/2022] Open
Abstract
The site preference for ligand substitution in the benzothiazolate-bridged cluster HOs3(CO)10(μ-1,2-N,C-η1,κ1-C7H4NS) (1) has been investigated using PPh3. 1 reacts with PPh3 in the presence of Me3NO to afford the mono- and bisphosphine substituted clusters HOs3(CO)9(PPh3)(μ-1,2-N,C-η1,κ1-C7H4NS) (2) and HOs3(CO)8(PPh3)2(μ-1,2-N,C-η1,κ1-C7H4NS) (3), respectively. 2 exists as a pair of non-interconverting isomers where the PPh3 ligand is situated at one of the equatorial sites syn to the edge-bridging hydride that shares a common Os–Os bond with the metalated heterocycle. The solid-state structure of the major isomer establishes the PPh3 regiochemistry at the N-substituted osmium center. DFT calculations confirm the thermodynamic preference for this particular isomer relative to the minor isomer whose phosphine ligand is located at the adjacent C-metalated osmium center. 2 also reacts with PPh3 to give 3. The locus of the second substitution occurs at one of the two equatorial sites at the Os(CO)4 moiety in 2 and gives rise to a pair of fluxional stereoisomers where the new phosphine ligand is scrambled between the two equatorial sites at the Os(CO)3P moiety. The molecular structure of the major isomer has been determined by X-ray diffraction analysis and found to represent the lowest energy structure of the different stereoisomers computed for HOs3(CO)8(PPh3)2(μ-1,2-N,C-η1,κ1-C7H4NS). The fluxional behavior displayed by 3 has been examined by VT NMR spectroscopy, and DFT calculations provide evidence for stereoselective tripodal rotation at the Os(CO)3P moiety that serves to equilibrate the second phosphine between the two available equatorial sites. The site preference for PPh3 substitution in HOs3(CO)10(PPh3)2(μ-1,2-N,C-η1,κ1-C7H4NS) (1) has been investigated.![]()
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Affiliation(s)
- Shahin A Begum
- Department of Chemistry, Jahangirnagar University Savar Dhaka-1342 Bangladesh +880-27791099
| | - Md Arshad H Chowdhury
- Department of Chemistry, Jahangirnagar University Savar Dhaka-1342 Bangladesh +880-27791099
| | - Shishir Ghosh
- Department of Chemistry, Jahangirnagar University Savar Dhaka-1342 Bangladesh +880-27791099
| | - Derek A Tocher
- Department of Chemistry, University College London 20 Gordon Street London WC1H OAJ UK
| | | | - Li Yang
- Department of Chemistry, University of North Texas Denton TX 76209 USA
| | - K I Hardcastle
- Department of Chemistry, Emory University Atlanta GA 30322 USA
| | - Edward Rosenberg
- Department of Chemistry, University of Montana Missoula MT 59812 USA
| | - Shariff E Kabir
- Department of Chemistry, Jahangirnagar University Savar Dhaka-1342 Bangladesh +880-27791099
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Reaction of electron-deficient 6-methoxyquinolinate-substituted cluster [Os3(CO)9{μ3-η1,κ1-C9H5N(6-OMe)}(μ-H)] with PPh3: Thermally induced ligand isomerization, decarbonylation and orthometallation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.03.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Mahid Uddin K, Chowdhury MAH, Kamal Hossain M, Ghosh S, Tocher DA, Richmond MG, Kabir SE. Alkyne activation and polyhedral reorganization in benzothiazolate-capped osmium clusters on reaction with diethyl acetylenedicarboxylate (DEAD) and ethyl propiolate. Dalton Trans 2018; 46:13597-13609. [PMID: 28952645 DOI: 10.1039/c7dt02933k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of the face-capped benzothiazolate clusters HOs3(CO)9[μ3-C7H3(R)NS] (1a, R = H; 1b, R = 2-CH3) with alkynes has been investigated. 1a reacts with DEAD at 67 °C to furnish the isomeric alkenyl clusters Os3(CO)9(μ-C7H4NS)(μ3-EtO2CCCHCO2Et) (2a and 3a). X-ray crystallographic analyses of 2a and 3a have confirmed the stereoisomeric relationship of these products and the regiospecific polyhedral expansion that follows the formal transfer of the hydride to the coordinated alkyne ligand in HOs3(CO)9(μ-C7H4NS)(η2-DEAD). The significant structural differences between the two isomers, as revealed by the solid-state structures, derives from the regiospecific cleavage of one of the three Os-Os bonds in the intermediate alkenyl cluster Os3(CO)9(μ-C7H4NS)(η1-EtO2CCCHCO2Et), which follows hydride transfer to the coordinated alkyne ligand in the pi compound HOs3(CO)9(μ-C7H4NS)(η2-DEAD). Control experiments confirm the reversibility of the reaction leading to the formation of 2a and 3a. Whereas heating either isomer in refluxing THF or benzene affords a binary mixture containing 2a and 3a, thermolysis in refluxing toluene leads to the activation of the alkenyl ligand and formation of the new cluster Os3(CO)9(μ-C7H4NS)(μ3-EtO2CCCH2) (4). 4 was independently synthesized from 1a and ethyl propiolate at room temperature. The computed mechanisms that account for the formation of 2a and 3a are presented, along with the mechanism for the reaction of 1a with ethyl propiolate to give 4.
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Affiliation(s)
- Kh Mahid Uddin
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh
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Begum SA, Chowdhury MAH, Ghosh S, Tocher DA, Richmond MG, Rosenberg E, Kabir SE. Reactions of the face-capped benzothiazolate-substituted clusters Os3(CO)9(μ3,η2-C7H3NSR)(μ-H) (R = H, Me) with PPh3: Kinetic formation of Os3(CO)9(PPh3)(μ,η2-C7H3NSR)(μ-H) and thermally induced ligand isomerization. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.10.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kumar T, Mane V, Namboothiri INN. Synthesis of Aminophenanthrenes and Benzoquinolines via Hauser–Kraus Annulation of Sulfonyl Phthalide with Rauhut–Currier Adducts of Nitroalkenes. Org Lett 2017; 19:4283-4286. [DOI: 10.1021/acs.orglett.7b01924] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tarun Kumar
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
| | - Vaijinath Mane
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India
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Reversible C-H bond activation at a triosmium centre: A comparative study of the reactivity of unsaturated triosmium clusters Os 3 (CO) 8 (μ-dppm)(μ-H) 2 and Os 3 (CO) 8 (μ-dppf)(μ-H) 2 with activated alkynes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Raha AK, Uddin MN, Ghosh S, Miah AR, Richmond MG, Tocher DA, Nordlander E, Hogarth G, Kabir SE. A comparative study of the reactivity of the lightly stabilized cluster [Os3(CO)8{μ3-Ph2PCH2P(Ph)C6H4}(μ-H)] towards tri(2-thienyl)-, tri(2-furyl)- and triphenyl-phosphine. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.08.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rosenberg E, Abedin J, Hardcastle KI. Nucleophilic Attack on an Electronically Unsaturated Triosmium Cluster Complex of 2-Methylbenzoxazole: An Unusual Oxidative Ring Opening. J CLUST SCI 2012. [DOI: 10.1007/s10876-012-0496-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rosenberg E, Kumar R. New methods for functionalizing biologically important molecules using triosmium metal clusters. Dalton Trans 2012; 41:714-22. [DOI: 10.1039/c1dt11173f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Reactivity of electron-deficient triosmium quinoline cluster [Os3(CO)9(μ3-η2-C9H6N)(μ-H)] with alkynes. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.08.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Hossain MI, Ghosh S, Hogarth G, Golzar Hossain G, Kabir SE. Bridging allyl ligands upon allene insertion into electron-deficient triosmium-hydride clusters [Os3(CO)9(μ3-NSC7H3R)(μ-H)] (R = H, Me). J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.04.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mahid Uddin K, Ghosh S, Raha AK, Hogarth G, Rosenberg E, Sharmin A, Hardcastle KI, Kabir SE. Cluster-mediated alkenyl isomerism and carbon–carbon bond formation: The reaction of the unsaturated benzothiazole cluster [Os3(CO)9(μ3-C7H4NS)(μ-H)] with dimethyl acetylenedicarboxylate. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.02.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hogarth G, Kabir SE, Nordlander E. Cluster chemistry in the Noughties: new developments and their relationship to nanoparticles. Dalton Trans 2010; 39:6153-74. [DOI: 10.1039/c000514b] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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A comparative study of the reactivity of unsaturated triosmium clusters [Os3(CO)8{μ3-Ph2PCH2P(Ph)C6H4}(μ-H)] and [Os3(CO)9{μ3-η2-C7H3(2-Me)NS}(μ-H)] with tBuNC. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.08.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Ponikiewski L, Shi W, Rothenberger A. Synthesis and Structures of MetallatedN-Heterocyclic Derivatives. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sharmin A, Minazzo A, Salassa L, Rosenberg E, Ross JA, Kabir SE, Hardcastle KI. Synthesis, structure, photophysical and electrochemical behavior of 2-amino-anthracene triosmium clusters. Inorganica Chim Acta 2008; 361:1624-1633. [PMID: 31607757 PMCID: PMC6788447 DOI: 10.1016/j.ica.2007.03.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The reactions of 2-amino-anthracene with [Os3(CO)10(CH3CN)2] have been studied and the products structurally characterized by spectroscopic, X-ray diffraction, photophysical and electrochemical techniques. At room temperature in CH2Cl2 two major, isomeric products are obtained [Os3(CO)10(μ-η2-(N-C(1))-NH2C14H8)(μ-H)] (1, 14%) and [Os3(CO)10(μ-η2-(N-C(3))-NHC14H9)(μ-H)] (2, 35%) along with a trace amount of the dihydrido complex [Os3(CO)9(μ-η2-(N-C(3))-NHC14H8)(μ-H)2] (3). In refluxing tetrahydrofuran only complexes 2 and 3 are obtained in 24% and 28%, respectively. A separate experiment shows that complex 1 slowly converts to 2 and that the rearrangement is catalyzed by adventitious water and involves proton transfer to the anthracene ring. Complex 1 is stereochemically non-rigid; exhibiting edge to edge hydride migration while 2 is stereochemically rigid. Complex 3 is also stereochemically non-rigid showing a site exchange process of the magnetically nonequivalent hydrides typical for trinuclear dihydrides. Interestingly, 2 decarbonylates cleanly to the electronically unsaturated 46e- cluster [Os3(CO)9(μ3-η2-(N-C(3))-NHC10H9)(μ-H)] (4, 68%) in refluxing cyclohexane, while photolysis of 2 in CH2Cl2 yields only a small amount of 3 along with considerable decomposition. The mechanism of the conversion of 1 to 2 and the dependence of the product distribution on solvent are discussed. All four compounds are luminescent with compounds 1-3 showing emissions that can be assigned to radiative decay associated with the anthracene ligand. Complexes 1-3 all show irreversible 1e- reductions in the range of-1.85-2.14 V while 4 shows a nicely reversible 1e- wave at-1.16 V and a quasi-reversible second 1e- wave at-1.62 V. Irreversible oxidations are observed in the range from +0.35 to +0.49 V. The relationship between the cluster ligand configurations and the observed electrochemical and photochemical behavior is discussed and compared with that of the free ligand.
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Affiliation(s)
- Ayesha Sharmin
- Department of Chemistry, University of Montana, Missoula, MT 59812, United States
| | - Agnese Minazzo
- Department of Chemistry, University of Montana, Missoula, MT 59812, United States
| | - Luca Salassa
- Department of Chemistry, University of Montana, Missoula, MT 59812, United States
| | - Edward Rosenberg
- Department of Chemistry, University of Montana, Missoula, MT 59812, United States
| | - J.B. Alexander Ross
- Department of Chemistry, University of Montana, Missoula, MT 59812, United States
| | - Shariff E. Kabir
- Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
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Nowroozi-Isfahani T, Musaev DG, Morokuma K, Rosenberg E. Computational Studies of Nucleophilic Attack and Protonation of Electron-Deficient Benzoheterocycle Triosmium Clusters. Inorg Chem 2006; 45:4963-73. [PMID: 16780317 DOI: 10.1021/ic052012x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The density functional theory method has been applied to gain insights into the regioselectivity of nucleophilic attack and protonation of electron-deficient benzoheterocycle triosmium clusters. We report our computational results on the reaction of the green 46-electron triosmium clusters Os3(CO)(9)(mu3-eta2-(LH))(mu-H) (L = benzoxazole, 1a; benzothiazole, 1b; dihydroquinoline, 1c; 1,3-dehydroindoline, 1d; 4H-3,1-benzoxazine, 1e) with hydride (H-) and proton (H+) in order to elucidate factors affecting the observed differences in the structure of the kinetic products of these reactions. Transition-state calculations for the interconversion of the anionic tautomers resulting from H- attack on the clusters 1a-e show that the activation energies of these anionic clusters are considerably lower than the previously reported barriers for related neutral clusters. Calculations also reveal that the structures of the kinetic products resulting from sequential H-/H+ attack are determined by the protonation process.
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Affiliation(s)
- Taraneh Nowroozi-Isfahani
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA
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Musaev DG, Nowroozi-Isfahani T, Morokuma K, Abedin J, Rosenberg E, Hardcastle KI. Experimental and Computational Studies of Nucleophilic Attack, Tautomerization, and Hydride Migration in Benzoheterocycle Triosmium Clusters. Organometallics 2005. [DOI: 10.1021/om050719l] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | - Kenneth I. Hardcastle
- Department of Chemistry, 1515 Dickey Drive, Emory University, Atlanta, Georgia 30322
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Reactions of Unsaturated Quinoline Triosmium Clusters [Os3(CO)9(μ3-η2-C9H5(4-R)N)(μ-H)] (R=Me or H) with Tetramethylthiourea: X-ray Structures of [Os3(CO)8(μ-η2-C9H5(4-Me)N)(η2-SC(NMe2NCH2Me)(μ-H)2] and [Os3(CO)9(μ-η2-C9H6N)(η1-SC(NMe2)2)(μ-H)]. J CLUST SCI 2005. [DOI: 10.1007/s10876-005-0032-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Musaev DG, Nowroozi-Isfahani T, Morokuma K, Rosenberg E. Computational Studies of the Energetics and Reaction Pathways of Molecular Transformations of Benzoheterocycles on Triosmium Clusters. Organometallics 2005. [DOI: 10.1021/om050711b] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Djamaladdin G. Musaev
- Emerson Center for Scientific Computation and Department of Chemistry, 1515 Dickey Drive, Emory University, Atlanta, Georgia 30322
| | - Taraneh Nowroozi-Isfahani
- Emerson Center for Scientific Computation and Department of Chemistry, 1515 Dickey Drive, Emory University, Atlanta, Georgia 30322
| | - Keiji Morokuma
- Emerson Center for Scientific Computation and Department of Chemistry, 1515 Dickey Drive, Emory University, Atlanta, Georgia 30322
| | - Edward Rosenberg
- Department of Chemistry, University of Montana, Missoula, Montana 59812
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Colangelo D, Ghiglia A, Ghezzi A, Ravera M, Rosenberg E, Spada F, Osella D. Water-soluble benzoheterocycle triosmium clusters as potential inhibitors of telomerase enzyme. J Inorg Biochem 2005; 99:505-12. [PMID: 15621283 DOI: 10.1016/j.jinorgbio.2004.10.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2004] [Revised: 09/17/2004] [Accepted: 10/25/2004] [Indexed: 10/26/2022]
Abstract
We have studied the ability of several bioorganometallic clusters [(mu-H)Os(3)(CO)(9)(L)(mu(3)-eta(2)-(Q-H))], where L = [P(C(6)H(4)SO(3)Na)(3)] or [P(OCH(2)CH(2)NMe(3)I)(3)], and Q = quinoline, 3-aminoquinoline, quinoxaline or phenanthridine, of inhibiting telomerase, a crucial enzyme for cancer progression. In general, quinolines have shown interesting biological properties, especially in inhibiting enzymes. For example, the 2,3,7-trichloro-5-nitroquinoxaline (TNQX) exhibited strong anti-telomerase activity in vitro. Among the quinoline-clusters under study, only the negatively charged ones (by virtue of the sulfonated phosphines) exhibited good anti-telomerasic activity on semi-purified enzyme in a cell-free assay, while they were ineffective in vitro on Taq, a different DNA-polymerase. On the contrary, the treatment of breast cancer MCF-7 cell line did not evidence any activity of these clusters, suggesting a low aptitude for crossing cell membrane. Furthermore, all clusters exhibited non-specific, acute cytotoxicy, probably due to accumulation on cell membranes by virtue of their amphiphilic character. A detailed study of Os uptake and accumulation in MCF-7 cells supported this hypothesis.
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Affiliation(s)
- Donato Colangelo
- Dipartimento di Scienze Mediche, Università del Piemonte Orientale Amedeo Avogadro, Via Solaroli 17, 28100 Novara, Italy
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Lin Q, Leong WK. The photochemical reaction of Os3(CO)10(μ-H)(μ-γ-C5H3O2), a triosmium cluster carrying a γ-pyrone ligand, with dimethylacetylenedicarboxylate: formation of isomeric clusters. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2004.09.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Selective covalent binding of a positively charged water-soluble benzoheterocycle triosmium cluster to single- and double-stranded DNA. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.08.044] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Begum N, Deeming A, Islam M, Kabir S, Rokhsana D, Rosenberg E. Reactions of benzothiazolide triosmium clusters with tetramethylthiourea. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Rosenberg E, Kabir SE, Abedin MJ, Hardcastle KI. Reactions of Electron-Deficient Benzoheterocycle Triosmium Complexes with Lithium Isobutyronitrile. Organometallics 2004. [DOI: 10.1021/om040046r] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Edward Rosenberg
- Department of Chemistry, University of Montana, Missoula, Montana 59812
| | - Shariff E. Kabir
- Department of Chemistry, University of Montana, Missoula, Montana 59812
| | - Md. Joynal Abedin
- Department of Chemistry, University of Montana, Missoula, Montana 59812
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28
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Solution properties, electrochemical behavior and protein interactions of water soluble triosmium carbonyl clusters. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.02.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Lum MW, Leong WK. Organo-Group 15 derivatives of triosmium clusters containing naphthyl ligands. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rosenberg E, Rokhsana D, Nervi C, Gobetto R, Milone L, Viale A, Fiedler J, Botavina MA. Synthesis, Reduction Chemistry, and Spectroscopic and Computational Studies of Isomeric Quinolinecarboxaldehyde Triosmium Clusters. Organometallics 2003. [DOI: 10.1021/om030564m] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | - Jan Fiedler
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 18223 Prague, Czech Republic
| | - Maria Alexandrovna Botavina
- N. D. Zelinsky Institute of Physical Chemistry, Russian Academy of Science, Leninsky Prospect 47, 117913 Moscow, Russia
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Affiliation(s)
- Qi Lin
- Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 119260
| | - Weng Kee Leong
- Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 119260
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Cabeza JA, da Silva I, del Río I, García-Granda S, Riera V, Sánchez-Vega MG. Reactivity of Triosmium and Triruthenium Carbonyls with 2,2‘-Diamino-1,1‘-binaphthalene. Synthesis of C- and N-Metalated Derivatives. Organometallics 2003. [DOI: 10.1021/om020903w] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Javier A. Cabeza
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica “Enrique Moles”, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain, and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Iván da Silva
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica “Enrique Moles”, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain, and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Ignacio del Río
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica “Enrique Moles”, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain, and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Santiago García-Granda
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica “Enrique Moles”, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain, and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Víctor Riera
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica “Enrique Moles”, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain, and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - M. Gabriela Sánchez-Vega
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica “Enrique Moles”, Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain, and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
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D'Ornelas L, Castrillo T, Hernández de B L, Narayan A, Atencio R. Osmium clusters derived from the reactions of [Os3(CO)10(CH3CN)2] with aminothiazole compounds; X-ray structures of [Os3(μ-H)(CO)10(μ-C8H7N2S)], [Os3(μ-H)(CO)9(μ3-η2-C3H5N2S)] and [Os3(μ-H)(CO)9(μ3-η2-C6H7ON2S)]. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01134-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cabeza JA, del Río I, García-Granda S, Riera V, Suárez M. Triruthenium and Triosmium Carbonyl Cluster Complexes Containing Deprotonated Di(2-pyridyl)amine in Unusual Coordination Modes. Organometallics 2002. [DOI: 10.1021/om020073m] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javier A. Cabeza
- Instituto de Química Organometálica “Enrique Moles” and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Ignacio del Río
- Instituto de Química Organometálica “Enrique Moles” and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Santiago García-Granda
- Instituto de Química Organometálica “Enrique Moles” and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Víctor Riera
- Instituto de Química Organometálica “Enrique Moles” and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Marta Suárez
- Instituto de Química Organometálica “Enrique Moles” and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
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Rosenberg E, Joynal Abedin M, Rokhsana D, Viale A, Dastru' W, Gobetto R, Milone L, Hardcastle K. Ligand dependent structural changes in the acid–base chemistry of electron deficient benzoheterocycle triosmium clusters. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)00794-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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The electrochemical behaviour of electron deficient benzoheterocycle triosmium clusters. Inorganica Chim Acta 2000. [DOI: 10.1016/s0020-1693(00)00020-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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