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Pinto SMA, Vinagreiro CS, Tomé VA, Piccirillo G, Damas L, Pereira MM. Nitrobenzene method: A keystone in meso-substituted halogenated porphyrin synthesis and applications. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s1088424619300039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This review article briefly describes the available synthetic approaches for meso-arylporphyrins giving particular emphasis for one-pot nitrobenzene and nitrobenzene/NaY methods regarding the synthesis of meso-halogenated arylporphyrins. The review also describes the relevant applications of these halogenated porphyrins and their metalloporphyrin counterparts, prepared via nitrobenzene method, as photosensitizers for therapy (PDT and PDI), diagnostic (molecular contrast agents) and also for catalytic oxidation and CO2 cycloaddition reactions to epoxides.
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Affiliation(s)
- Sara M. A. Pinto
- Coimbra Chemistry Centre, CQC, Department of Chemistry, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Carolina S. Vinagreiro
- Coimbra Chemistry Centre, CQC, Department of Chemistry, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Vanessa A. Tomé
- Coimbra Chemistry Centre, CQC, Department of Chemistry, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Giusi Piccirillo
- Coimbra Chemistry Centre, CQC, Department of Chemistry, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Liliana Damas
- Coimbra Chemistry Centre, CQC, Department of Chemistry, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Mariette M. Pereira
- Coimbra Chemistry Centre, CQC, Department of Chemistry, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
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Leszczyński MK, Kornowicz A, Prochowicz D, Justyniak I, Noworyta K, Lewiński J. Straightforward Synthesis of Single-Crystalline and Redox-Active Cr(II)-carboxylate MOFs. Inorg Chem 2018; 57:4803-4806. [DOI: 10.1021/acs.inorgchem.8b00395] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michał K. Leszczyński
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Arkadiusz Kornowicz
- Department of Chemistry Warsaw University of Technology Noakowskiego 3, 00-664, Warsaw, Poland
| | - Daniel Prochowicz
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Iwona Justyniak
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Krzysztof Noworyta
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Janusz Lewiński
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52, 01-224 Warsaw, Poland
- Department of Chemistry Warsaw University of Technology Noakowskiego 3, 00-664, Warsaw, Poland
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Hohloch S, Garner ME, Parker BF, Arnold J. New supporting ligands in actinide chemistry: tetramethyltetraazaannulene complexes with thorium and uranium. Dalton Trans 2018; 46:13768-13782. [PMID: 28959804 DOI: 10.1039/c7dt02682j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the synthesis, characterization, and preliminary reactivity of new heteroleptic thorium and uranium complexes supported by the macrocyclic TMTAA ligand (TMTAA = Tetramethyl-tetra-aza-annulene). The dihalide complexes Th(TMTAA)Cl2(THF)2 (1), [UCl2(TMTAA)]2 (2) and U(TMTAA)I2 (3) are further functionalized to the Cp* derivatives ThCp*(TMTAA)Cl (4), UCp*(TMTAA)Cl (5) and UCp*(TMTAA)I (6) (Cp* = pentamethylcyclopentadienide). Compounds 4-6 are also obtained through a one-pot reaction from standard thorium(iv) and uranium(iv) starting materials, Li2TMTAA and KCp*. Complexes 1-6 function as valuable starting materials for salt metathesis chemistry. Treatment of precursors 4 or 5 with trimethylsilylmethyllithium (LiCH2TMS) results in the new actinide TMTAA alkyl complexes ThCp*(TMTAA)(CH2TMS) (7) and UCp*(TMTAA)(CH2TMTS) (8), respectively. The TMTAA-derived alkyl complexes (7 and 8) show unexpected stability and are stable for several weeks at room temperature in solution and in the solid-state. Additionally, double substitution of the halide ligands in 1-3 shows a strong dependence on the nucleophile used. While weaker nucleophiles, such as amides, and more sterically demanding nucleophiles, such as Cp (Cp = cyclopenadienide), favour the formation of bis-TMTAA "sandwich" complexes [An(TMTAA)2] (An = Th (9) and An = U (10)), the use of oxygen-functionalized ligands like the ODipp anion (Dipp = diisopropylphenyl) results in the formation of the doubly substituted species Th(ODipp)2TMTAA (11) and U(ODipp)2TMTAA (12). We also describe the divergent reactivity of the TMTAA ligand towards uranium(iii). Unlike the syntheses of actinide(iv) TMTAA complexes, the synthesis of a uranium(iii) TMTAA was not successful and only uranium(iv) species could be obtained.
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Affiliation(s)
- Stephan Hohloch
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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Androš Dubraja L, Jurić M, Lafargue-Dit-Hauret W, Pajić D, Zorko A, Ozarowski A, Rocquefelte X. First crystal structures of oxo-bridged [Cr IIITa V] dinuclear complexes: spectroscopic, magnetic and theoretical investigations of the Cr–O–Ta core. NEW J CHEM 2018. [DOI: 10.1039/c8nj01493k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The vibrational, electronic, structural and magnetic properties of dinuclear compounds with a Cr–O–Ta bridge were validated with DFT calculations.
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Affiliation(s)
| | | | | | - Damir Pajić
- Department of Physics
- Faculty of Science
- University of Zagreb
- 10000 Zagreb
- Croatia
| | | | - Andrew Ozarowski
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Xavier Rocquefelte
- Institut des Sciences Chimiques de Rennes
- UMR CNRS 6226
- Université de Rennes 1
- 35042 Rennes
- France
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Solventless Coupling of Epoxides and CO2 in Compressed Medium Catalysed by Fluorinated Metalloporphyrins. Catalysts 2017. [DOI: 10.3390/catal7070210] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Molaee H, Nabavizadeh SM, Jamshidi M, Vilsmeier M, Pfitzner A, Samandar Sangari M. Phosphorescent heterobimetallic complexes involving platinum(iv) and rhenium(vii) centers connected by an unsupported μ-oxido bridge. Dalton Trans 2017; 46:16077-16088. [DOI: 10.1039/c7dt03126b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Heterobimetallic compounds containing an unsupported Pt(iv)–O–Re(vii) bridge are synthesized. The complexes exhibit rare phosphorescence emission in solid and frozen states.
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Affiliation(s)
- Hajar Molaee
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | | | | | - Max Vilsmeier
- Institut für Anorganische Chemie
- Universität Regensburg
- 93040 Regensburg
- Germany
| | - Arno Pfitzner
- Institut für Anorganische Chemie
- Universität Regensburg
- 93040 Regensburg
- Germany
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Turlington MD, Pienkos JA, Carlton ES, Wroblewski KN, Myers AR, Trindle CO, Altun Z, Rack JJ, Wagenknecht PS. Complexes with Tunable Intramolecular Ferrocene to Ti(IV) Electronic Transitions: Models for Solid State Fe(II) to Ti(IV) Charge Transfer. Inorg Chem 2016; 55:2200-11. [PMID: 26881903 DOI: 10.1021/acs.inorgchem.5b02587] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Iron(II)-to-titanium(IV) metal-to-metal-charge transfer (MMCT) is important in the photosensitization of TiO2 by ferrocyanide, charge transfer in solid-state metal-oxide photocatalysts, and has been invoked to explain the blue color of sapphire, blue kyanite, and some lunar material. Herein, a series of complexes with alkynyl linkages between ferrocene (Fc) and Ti(IV) has been prepared and characterized by UV-vis spectroscopy and electrochemistry. Complexes with two ferrocene substituents include Cp2Ti(C2Fc)2, Cp*2Ti(C2Fc)2, and Cp2Ti(C4Fc)2. Complexes with a single ferrocene utilize a titanocene with a trimethylsilyl derivatized Cp ring, (TMS)Cp, and comprise the complexes (TMS)Cp2Ti(C2Fc)(C2R), where R = C6H5, p-C6H4CF3, and CF3. The complexes are compared to Cp2Ti(C2Ph)2, which lacks the second metal. Cyclic voltammetry for all complexes reveals a reversible Ti(IV/III) reduction wave and an Fe(II/III) oxidation that is irreversible for all complexes except (TMS)Cp2Ti(C2Fc)(C2CF3). All of the complexes with both Fc and Ti show an intense absorption (4000 M(-1)cm(-1) < ε < 8000 M(-1)cm(-1)) between 540 and 630 nm that is absent in complexes lacking a ferrocene donor. The energy of the absorption tracks with the difference between the Ti(IV/III) and Fe(III/II) reduction potentials, shifting to lower energy as the difference in potentials decreases. Reorganization energies, λ, have been determined using band shape analysis (2600 cm(-1) < λ < 5300 cm(-1)) and are in the range observed for other donor-acceptor complexes that have a ferrocene donor. Marcus-Hush-type analysis of the electrochemical and spectroscopic data are consistent with the assignment of the low-energy absorption as a MMCT band. TD-DFT analysis also supports this assignment. Solvatochromism is apparent for the MMCT band of all complexes, there being a bathochromic shift upon increasing polarizability of the solvent. The magnitude of the shift is dependent on both the electron density at Ti(IV) and the identity of the linker between the titanocene and the Fc. Complexes with a MMCT are photochemically stable, whereas Cp2Ti(C2Ph)2 rapidly decomposes upon photolysis.
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Affiliation(s)
- Michael D Turlington
- Department of Chemistry, Furman University , Greenville, South Carolina 29613, United States
| | - Jared A Pienkos
- Department of Chemistry, Furman University , Greenville, South Carolina 29613, United States
| | - Elizabeth S Carlton
- Department of Chemistry, Furman University , Greenville, South Carolina 29613, United States
| | - Karlee N Wroblewski
- Department of Chemistry, Furman University , Greenville, South Carolina 29613, United States
| | - Alexis R Myers
- Department of Chemistry, Furman University , Greenville, South Carolina 29613, United States
| | - Carl O Trindle
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
| | - Zikri Altun
- Department of Physics, Marmara University Göztepe Kampus , 34772 Istanbul Turkey
| | - Jeffrey J Rack
- Department of Chemistry and Chemical Biology, University of New Mexico , Albuquerque, New Mexico 87131, United States
| | - Paul S Wagenknecht
- Department of Chemistry, Furman University , Greenville, South Carolina 29613, United States
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Goggins EM, Lekich TT, Weare WW, Sommer RD, Ribeiro MA, Pinheiro CB. A Periodic Walk through a Series of First-Row, Oxido-Bridged, Heterodimetallic Molecules: Synthesis and Structure. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501325] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Burns E, Huang T, Weare WW, Bartolotti L, Wang X, Yao J, Li H, Franzen S. Aerobic oxidation of β-isophorone by tetraphenylporphyrin catalysts in pyridine solution. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.09.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wu X, Huang T, Lekich TT, Sommer RD, Weare WW. Synthesis of Unsupported d1–dx Oxido-Bridged Heterobimetallic Complexes Containing VIV: A New Direction for Metal-to-Metal Charge Transfer. Inorg Chem 2015; 54:5322-8. [DOI: 10.1021/acs.inorgchem.5b00370] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Xinyuan Wu
- Department
of Chemistry, North Carolina State University, Campus Box 8204, Raleigh, North Carolina 27695-8204, United States
| | - Tao Huang
- Department
of Chemistry, North Carolina State University, Campus Box 8204, Raleigh, North Carolina 27695-8204, United States
| | - Travis T. Lekich
- Department
of Chemistry, North Carolina State University, Campus Box 8204, Raleigh, North Carolina 27695-8204, United States
| | - Roger D. Sommer
- Department
of Chemistry, North Carolina State University, Campus Box 8204, Raleigh, North Carolina 27695-8204, United States
| | - Walter W. Weare
- Department
of Chemistry, North Carolina State University, Campus Box 8204, Raleigh, North Carolina 27695-8204, United States
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Huang T, Wu X, Song X, Xu H, Smirnova TI, Weare WW, Sommer RD. Ferromagnetic coupling in d1–d3 linear oxido-bridged heterometallic complexes: ground-state models of metal-to-metal charge transfer excited states. Dalton Trans 2015; 44:18937-44. [PMID: 26466862 DOI: 10.1039/c5dt02719e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Linear heterobimetallic oxido-bridged d1–d3 compounds are described which are proposed as models for magnetic coupling of MMCT excited states.
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Affiliation(s)
- Tao Huang
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Xinyuan Wu
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Xiao Song
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Hao Xu
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | | | - Walter W. Weare
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Roger D. Sommer
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
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