301
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Smirnov AS, Nikolaev DN, Gurzhiy VV, Smirnov SN, Suslonov VS, Garabadzhiu AV, Davidovich PB. Conformational stabilization of isatin Schiff bases – biologically active chemical probes. RSC Adv 2017. [DOI: 10.1039/c6ra26779c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two ways of conformation stabilization for isatin Schiff bases (group of biologically active compounds) are reported here: complexation with metals that stabilize E-conformer and substitution in the 4th position of isatin core stabilizing Z-form.
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Affiliation(s)
- Andrey S. Smirnov
- Saint-Petersburg Technological Institute
- St. Petersburg
- Russia
- Saint-Petersburg State University
- St. Petersburg
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302
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Du MR, Zhang XB, Si SM, Wang L. Theoretical insights into the reaction of Cp*(Cl)Hf(diene) with isonitriles. RSC Adv 2017. [DOI: 10.1039/c7ra08981c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The reaction of Cp*(Cl)Hf(2,3-dimethylbutadiene) with isonitriles is theoretically investigated, and detailed elementary reactions and the substitution effects are examined.
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Affiliation(s)
- Ming-Ran Du
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- People's Republic of China
| | - Xiang-Biao Zhang
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- People's Republic of China
| | - Sheng-Meng Si
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- People's Republic of China
| | - Lei Wang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- People's Republic of China
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303
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Copper(II) complexes bearing o-iminosemiquinonate ligands with augmented aromatic substituents. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.08.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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304
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Pankhurst JR, Bell NL, Zegke M, Platts LN, Lamfsus CA, Maron L, Natrajan LS, Sproules S, Arnold PL, Love JB. Inner-sphere vs. outer-sphere reduction of uranyl supported by a redox-active, donor-expanded dipyrrin. Chem Sci 2016; 8:108-116. [PMID: 28451154 PMCID: PMC5304617 DOI: 10.1039/c6sc02912d] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/11/2016] [Indexed: 11/21/2022] Open
Abstract
The uranyl(vi) complex UO2Cl(L) of the redox-active, acyclic diimino-dipyrrin anion, L- is reported and its reaction with inner- and outer-sphere reductants studied. Voltammetric, EPR-spectroscopic and X-ray crystallographic studies show that chemical reduction by the outer-sphere reagent CoCp2 initially reduces the ligand to a dipyrrin radical, and imply that a second equivalent of CoCp2 reduces the U(vi) centre to form U(v). Cyclic voltammetry indicates that further outer-sphere reduction to form the putative U(iv) trianion only occurs at strongly cathodic potentials. The initial reduction of the dipyrrin ligand is supported by emission spectra, X-ray crystallography, and DFT; the latter also shows that these outer-sphere reactions are exergonic and proceed through sequential, one-electron steps. Reduction by the inner-sphere reductant [TiCp2Cl]2 is also likely to result in ligand reduction in the first instance but, in contrast to the outer-sphere case, reduction of the uranium centre becomes much more favoured, allowing the formation of a crystallographically characterised, doubly-titanated U(iv) complex. In the case of inner-sphere reduction only, ligand-to-metal electron-transfer is thermodynamically driven by coordination of Lewis-acidic Ti(iv) to the uranyl oxo, and is energetically preferable over the disproportionation of U(v). Overall, the involvement of the redox-active dipyrrin ligand in the reduction chemistry of UO2Cl(L) is inherent to both inner- and outer-sphere reduction mechanisms, providing a new route to accessing a variety of U(vi), U(v), and U(iv) complexes.
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Affiliation(s)
- James R Pankhurst
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . ;
| | - Nicola L Bell
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . ;
| | - Markus Zegke
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . ;
| | - Lucy N Platts
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . ;
| | - Carlos Alvarez Lamfsus
- LPCNO , INSA , Université de Toulouse , 135, avenue de Rangueil , 31077 Toulouse cedex 4 , France
| | - Laurent Maron
- LPCNO , INSA , Université de Toulouse , 135, avenue de Rangueil , 31077 Toulouse cedex 4 , France
| | - Louise S Natrajan
- Centre for Radiochemisty Research , School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK
| | - Stephen Sproules
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK
| | - Polly L Arnold
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . ;
| | - Jason B Love
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . ;
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305
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Kaim W. Electron Transfer Reactivity of Organometallic Compounds Involving Radical-Forming Noninnocent Ligands. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0304-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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306
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Sengupta D, Bhattacharjee R, Pramanick R, Rath SP, Saha Chowdhury N, Datta A, Goswami S. Exclusively Ligand-Mediated Catalytic Dehydrogenation of Alcohols. Inorg Chem 2016; 55:9602-9610. [DOI: 10.1021/acs.inorgchem.6b01310] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Debabrata Sengupta
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Rameswar Bhattacharjee
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Rajib Pramanick
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Santi Prasad Rath
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Nabanita Saha Chowdhury
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Ayan Datta
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
| | - Sreebrata Goswami
- Department
of Inorganic Chemistry and ΔDepartment of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700
032, India
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307
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Liberman-Martin AL, Ziegler MS, DiPasquale AG, Bergman RG, Tilley TD. Functionalization of an iridium–diamidocarbene complex by ligand-based reactions with titanocene and zirconocene sources. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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308
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Sarkar P, Tiwari A, Sarmah A, Bhandary S, Roy RK, Mukherjee C. An elusive vinyl radical isolated as an appended unit in a five-coordinate Co(iii)-bis(iminobenzosemiquinone) complex formed via ligand-centered C-S bond cleavage. Chem Commun (Camb) 2016; 52:10613-6. [PMID: 27439588 DOI: 10.1039/c6cc02751b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Redox-active ligand H4Pra(edt(AP/AP)) experienced C-S bond cleavage during complexation reaction with Co(OAc)2·2H2O in the presence of Et3N in CH3OH in air. Thus, formed complex 1 was composed of two iminobenzosemiquinone radicals in its coordination sphere and an unprecedented stable tethered-vinyl radical. The complex has been characterized by mass, X-ray single crystal, X-band EPR, variable-temperature magnetic moment measurements and DFT based computational study.
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Affiliation(s)
- Prasenjit Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
| | - Archana Tiwari
- Department of Physics, School of Physical Sciences, Sikkim University, Gangtok-737102, Sikkim, India
| | - Amrit Sarmah
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani-333031, Rajasthan, India
| | - Subhrajyoti Bhandary
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal - 462 066, Madhya Pradesh, India
| | - Ram Kinkar Roy
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani-333031, Rajasthan, India
| | - Chandan Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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309
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Fedushkin IL, Skatova AA, Dodonov VA, Yang XJ, Chudakova VA, Piskunov AV, Demeshko S, Baranov EV. Ligand “Brackets” for Ga–Ga Bond. Inorg Chem 2016; 55:9047-56. [DOI: 10.1021/acs.inorgchem.6b01514] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Igor L. Fedushkin
- G. A. Razuvaev Institute of Organometallic
Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603137, Russian Federation
| | - Alexandra A. Skatova
- G. A. Razuvaev Institute of Organometallic
Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603137, Russian Federation
| | - Vladimir A. Dodonov
- G. A. Razuvaev Institute of Organometallic
Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603137, Russian Federation
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural
Functional Molecule Chemistry of the Ministry of Education, College
of Chemistry and Materials Science, Northwest University, Xi’an 710069, China
| | - Valentina A. Chudakova
- G. A. Razuvaev Institute of Organometallic
Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603137, Russian Federation
| | - Alexander V. Piskunov
- G. A. Razuvaev Institute of Organometallic
Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603137, Russian Federation
| | - Serhiy Demeshko
- Institut
für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, Göttingen 37077, Germany
| | - Evgeny V. Baranov
- G. A. Razuvaev Institute of Organometallic
Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603137, Russian Federation
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310
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Broere DLJ, Plessius R, Tory J, Demeshko S, de Bruin B, Siegler MA, Hartl F, van der Vlugt JI. Localized Mixed-Valence and Redox Activity within a Triazole-Bridged Dinucleating Ligand upon Coordination to Palladium. Chemistry 2016; 22:13965-13975. [PMID: 27531163 DOI: 10.1002/chem.201601900] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Indexed: 12/31/2022]
Abstract
The new dinucleating redox-active ligand (LH4 ), bearing two redox-active NNO-binding pockets linked by a 1,2,3-triazole unit, is synthetically readily accessible. Coordination to two equivalents of PdII resulted in the formation of paramagnetic (S=1/2 ) dinuclear Pd complexes with a κ2 -N,N'-bridging triazole and a single bridging chlorido or azido ligand. A combined spectroscopic, spectroelectrochemical, and computational study confirmed Robin-Day Class II mixed-valence within the redox-active ligand, with little influence of the secondary bridging anionic ligand. Intervalence charge transfer was observed between the two ligand binding pockets. Selective one-electron oxidation allowed for isolation of the corresponding cationic ligand-based diradical species. SQUID (super-conducting quantum interference device) measurements of these compounds revealed weak anti-ferromagnetic spin coupling between the two ligand-centered radicals and an overall singlet ground state in the solid state, which is supported by DFT calculations. The rigid and conjugated dinucleating redox-active ligand framework thus allows for efficient electronic communication between the two binding pockets.
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Affiliation(s)
- Daniël L J Broere
- Homogeneous, Bioinspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Raoul Plessius
- Homogeneous, Bioinspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Joanne Tory
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Serhiy Demeshko
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammanstrasse 4, 37077, Göttingen, Germany
| | - Bas de Bruin
- Homogeneous, Bioinspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Maxime A Siegler
- Department of Chemistry, John Hopkins University, 3400 N. Charles St., Baltimore, MD, 21218, USA
| | - Frantisek Hartl
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands.
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311
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Broere DLJ, van Leest NP, de Bruin B, Siegler MA, van der Vlugt JI. Reversible Redox Chemistry and Catalytic C(sp3)–H Amination Reactivity of a Paramagnetic Pd Complex Bearing a Redox-Active o-Aminophenol-Derived NNO Pincer Ligand. Inorg Chem 2016; 55:8603-11. [DOI: 10.1021/acs.inorgchem.6b01192] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniël L. J. Broere
- Homogeneous, Supramolecular & Bio-inspired Catalysis, van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Nicolaas P. van Leest
- Homogeneous, Supramolecular & Bio-inspired Catalysis, van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- Homogeneous, Supramolecular & Bio-inspired Catalysis, van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Maxime A. Siegler
- Department of Chemistry, John Hopkins University, Baltimore, Maryland 21218, United States
| | - Jarl Ivar van der Vlugt
- Homogeneous, Supramolecular & Bio-inspired Catalysis, van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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312
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Jacquet J, Chaumont P, Gontard G, Orio M, Vezin H, Blanchard S, Desage-El Murr M, Fensterbank L. C−N Bond Formation from a Masked High-Valent Copper Complex Stabilized by Redox Non-Innocent Ligands. Angew Chem Int Ed Engl 2016; 55:10712-6. [DOI: 10.1002/anie.201605132] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 07/05/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Jérémy Jacquet
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Pauline Chaumont
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Geoffrey Gontard
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Maylis Orio
- Aix Marseille Université, CNRS; Centrale Marseille, iSm2 UMR 7313; 13397 Marseille cedex 20 France
| | - Hervé Vezin
- Laboratoire de Spectrochimie Infrarouge et Raman; Université des Sciences et Technologies de Lille, UMR CNRS 8516; 59655 Villeneuve O'Ascq Cedex France
| | - Sébastien Blanchard
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Marine Desage-El Murr
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Louis Fensterbank
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
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313
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Jacquet J, Chaumont P, Gontard G, Orio M, Vezin H, Blanchard S, Desage-El Murr M, Fensterbank L. C−N Bond Formation from a Masked High-Valent Copper Complex Stabilized by Redox Non-Innocent Ligands. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605132] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jérémy Jacquet
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Pauline Chaumont
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Geoffrey Gontard
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Maylis Orio
- Aix Marseille Université, CNRS; Centrale Marseille, iSm2 UMR 7313; 13397 Marseille cedex 20 France
| | - Hervé Vezin
- Laboratoire de Spectrochimie Infrarouge et Raman; Université des Sciences et Technologies de Lille, UMR CNRS 8516; 59655 Villeneuve O'Ascq Cedex France
| | - Sébastien Blanchard
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Marine Desage-El Murr
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
| | - Louis Fensterbank
- Sorbonne Universités, UPMC; Université Paris 06, UMR CNRS 8232; Institut Parisien de Chimie Moléculaire; France
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314
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Jongbloed LS, García-López D, van Heck R, Siegler MA, Carbó JJ, van der Vlugt JI. Arene C(sp2)-H Metalation at NiII Modeled with a Reactive PONCPh Ligand. Inorg Chem 2016; 55:8041-7. [DOI: 10.1021/acs.inorgchem.6b01162] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Linda S. Jongbloed
- Homogeneous, Bioinspired & Supramolecular Catalysis, van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Diego García-López
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| | - Richard van Heck
- Homogeneous, Bioinspired & Supramolecular Catalysis, van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Maxime A. Siegler
- Department of Chemistry, John Hopkins University, Baltimore, Maryland, United States
| | - Jorge J. Carbó
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired & Supramolecular Catalysis, van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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315
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Vreeken V, Broere DLJ, Jans ACH, Lankelma M, Reek JNH, Siegler MA, van der Vlugt JI. Well-Defined Dinuclear Gold Complexes for Preorganization-Induced Selective Dual Gold Catalysis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603938] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Vincent Vreeken
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Daniël L. J. Broere
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Anne C. H. Jans
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Marianne Lankelma
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Joost N. H. Reek
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Maxime A. Siegler
- Small Molecule X-ray Crystallography Facility; Department of Chemistry; John Hopkins University; 3400 N. Charles St. Baltimore MD 21218 USA
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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316
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Vreeken V, Broere DLJ, Jans ACH, Lankelma M, Reek JNH, Siegler MA, van der Vlugt JI. Well-Defined Dinuclear Gold Complexes for Preorganization-Induced Selective Dual Gold Catalysis. Angew Chem Int Ed Engl 2016; 55:10042-6. [DOI: 10.1002/anie.201603938] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/27/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Vincent Vreeken
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Daniël L. J. Broere
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Anne C. H. Jans
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Marianne Lankelma
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Joost N. H. Reek
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Maxime A. Siegler
- Small Molecule X-ray Crystallography Facility; Department of Chemistry; John Hopkins University; 3400 N. Charles St. Baltimore MD 21218 USA
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired and Supramolecular Catalysis; van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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317
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Chegerev MG, Piskunov AV, Maleeva AV, Fukin GK, Abakumov GA. Multiple Reactivity of SnIIComplexes Bearing Catecholate ando-Amidophenolate Ligands. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600501] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maxim G. Chegerev
- G. A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; Laboratory of Organoelement Compounds; Tropinina Street 49 603950 Nizhny Novgorod Russian Federation
| | - Alexander V. Piskunov
- G. A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; Laboratory of Organoelement Compounds; Tropinina Street 49 603950 Nizhny Novgorod Russian Federation
| | - Aryna V. Maleeva
- G. A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; Laboratory of Organoelement Compounds; Tropinina Street 49 603950 Nizhny Novgorod Russian Federation
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; Laboratory of Organoelement Compounds; Tropinina Street 49 603950 Nizhny Novgorod Russian Federation
| | - Gleb A. Abakumov
- G. A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; Laboratory of Organoelement Compounds; Tropinina Street 49 603950 Nizhny Novgorod Russian Federation
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318
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Maity S, Kundu S, Bera S, Weyhermüller T, Ghosh P. Mixed‐Valence o‐Iminobenzoquinone and o‐Iminobenzosemiquinonate Anion Radical Complexes of Cobalt: Valence Tautomerism. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600525] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Suvendu Maity
- Department of ChemistryR. K. Mission Residential CollegeKolkata‐103NarendrapurIndia
| | - Suman Kundu
- Department of ChemistryR. K. Mission Residential CollegeKolkata‐103NarendrapurIndia
| | - Sachinath Bera
- Department of ChemistryR. K. Mission Residential CollegeKolkata‐103NarendrapurIndia
| | - Thomas Weyhermüller
- Max‐Planck‐Institut für Chemische EnergiekonversionStiftstrasse 34–3645470Mülheim an der RuhrGermany
| | - Prasanta Ghosh
- Department of ChemistryR. K. Mission Residential CollegeKolkata‐103NarendrapurIndia
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319
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Ali A, Dhar D, Barman SK, Lloret F, Mukherjee R. Nickel(II) Complex of a Hexadentate Ligand with Two o-Iminosemiquinonato(1-) π-Radical Units and Its Monocation and Dication. Inorg Chem 2016; 55:5759-71. [PMID: 27232547 DOI: 10.1021/acs.inorgchem.5b02688] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Aerobic reaction of a hexadentate redox-active o-aminophenol-based ligand, H4L(3) = N,N'-bis(2-hydroxy-3,5-di-tert-butylphenyl)-2,2'-diamino(diphenyldithio)-ethane, in CH3OH with Ni(II)(O2CCH3)2·4H2O and Et3N afforded isolation of a reddish-brown crystalline solid [Ni(L(3))] 1. Cyclic voltammetry (CV) experiment exhibits two oxidative responses at E1/2 = 0.09 and 0.53 V vs SCE (saturated calomel electrode). Chemical oxidation of 1 in air by [Fe(III)(η(5)-C5H5)2][PF6] and AgBF4 in CH2Cl2 led to the isolation of one-electron oxidized species [1](1+) as purple [1][PF6]·CH2Cl2 and two-electron oxidized species [1](2+) as dark purple [1][BF4]2·CH2Cl2, respectively. X-ray crystallographic analysis at 100(2) K unambiguously established that the ligand is present in [Ni(II){(L(ISQ)O,N)(•-)}{(L(ISQ)O,N)(•-)}{(LS,S)(0)}] 1, [Ni(II){(L(IBQ)O,N)(0)}{(L(ISQ)O,N)(•-)}{(LS,S)(0)}][PF6]·CH2Cl2, and [Ni(II){(L(IBQ)O,N)(0)}{(L(IBQ)O,N)(0)}{(LS,S)(0)}][BF4]2·CH2Cl2, as monoanionic o-iminosemiquinonate(1-) π-radical (Srad = 1/2) (L(ISQ))(•-) and neutral o-iminoquinone (L(IBQ))(0) redox-levels. Complexes 1, [1][PF6]·CH2Cl2, and [1][BF4]2·CH2Cl2 possess an S = 2, 3/2, and 1 ground-state, respectively, established by temperature-dependent (2-300 K) magnetic behavior of 1 and [1][PF6]·CH2Cl2, and a μeff value of [1][BF4]2·CH2Cl2 at 300 K. Both 1 and [1][PF6]·CH2Cl2 exhibit ferromagnetic exchange-coupling between the two electrons of Ni(II) and two/one ligand π-radicals, respectively. The redox processes are shown to be ligand-based. Spectroscopic and redox properties, and density functional theory (DFT) calculations at the CAM-B3LYP-level of theory adequately describe the electronic structure of 1, [1](1+), and [1](2+). The observed UV-vis-NIR absorptions for 1, [1][PF6]·CH2Cl2, and [1][BF4]2·CH2Cl2 have been assigned, based on time-dependent (TD)-DFT calculations.
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Affiliation(s)
- Akram Ali
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India
| | - Debanjan Dhar
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India
| | - Suman K Barman
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India.,Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata , Mohanpur 741 246, India
| | - Francesc Lloret
- Departament de Quımíca, Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de Valeńcia , Polígono de la Coma, s/n, 46980-Paterna, València, Spain
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India.,Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata , Mohanpur 741 246, India
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320
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Bagh B, Broere DLJ, Siegler MA, van der Vlugt JI. Redox-Active-Ligand-Mediated Formation of an Acyclic Trinuclear Ruthenium Complex with Bridging Nitrido Ligands. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603659] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Bidraha Bagh
- Homogeneous, Bioinspired and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Daniël L. J. Broere
- Homogeneous, Bioinspired and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Maxime A. Siegler
- Small Molecule X-ray Crystallography Facility, Department of Chemistry; John Hopkins University; Baltimore MD 21218 USA
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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321
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Bagh B, Broere DLJ, Siegler MA, van der Vlugt JI. Redox-Active-Ligand-Mediated Formation of an Acyclic Trinuclear Ruthenium Complex with Bridging Nitrido Ligands. Angew Chem Int Ed Engl 2016; 55:8381-5. [PMID: 27321547 DOI: 10.1002/anie.201603659] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 01/24/2023]
Abstract
Coordination of a redox-active pyridine aminophenol ligand to Ru(II) followed by aerobic oxidation generates two diamagnetic Ru(III) species [1 a (cis) and 1 b (trans)] with ligand-centered radicals. The reaction of 1 a/1 b with excess NaN3 under inert atmosphere resulted in the formation of a rare bis(nitrido)-bridged trinuclear ruthenium complex with two nonlinear asymmetrical Ru-N-Ru fragments. The spontaneous reduction of the ligand centered radical in the parent 1 a/1 b supports the oxidation of a nitride (N(3-) ) to half an equivalent of N2 . The trinuclear omplex is reactive toward TEMPO-H, tin hydrides, thiols, and dihydrogen.
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Affiliation(s)
- Bidraha Bagh
- Homogeneous, Bioinspired and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098, XH, Amsterdam, The Netherlands
| | - Daniël L J Broere
- Homogeneous, Bioinspired and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098, XH, Amsterdam, The Netherlands
| | - Maxime A Siegler
- Small Molecule X-ray Crystallography Facility, Department of Chemistry, John Hopkins University, Baltimore, MD, 21218, USA
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired and Supramolecular Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098, XH, Amsterdam, The Netherlands.
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322
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Bera S, Maity S, Weyhermüller T, Ghosh P. Radical non-radical states of the [Ru(PIQ)] core in complexes (PIQ = 9,10-phenanthreneiminoquinone). Dalton Trans 2016; 45:8236-47. [PMID: 27103119 DOI: 10.1039/c6dt00091f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
9,10-Phenanthreneiminosemiquinonate anion radical (PIQ˙(-)) complexes of ruthenium of types trans-[Ru(II)(PIQ˙(-))(PPh3)2(CO)Cl] () and trans-[Ru(III)(PIQ˙(-))(PPh3)2Cl2] () are reported. Reactions of and with I2 afford trans-[Ru(III)(PIQ˙(-))(PPh3)2(CO)Cl](+)I3(-)·½CH2Cl2 ((+)I3(-)·½CH2Cl2) and trans-[Ru(PIQ˙(-))2(PPh3)2(μ-Cl)3](+)I3(-)·¼I2·¼toluene) ((+)I3(-)·¼I2·¼toluene), while the reaction of with Br2 yields a 9,10-phenanthreneiminoquinone (PIQ) complex of the type mer-[Ru(III)(PIQ)(PPh3)Br3]·½CH2Cl2 (·½CH2Cl2). In comparison, the reaction of trans-[Ru(III)(PQ˙(-))(PPh3)2Cl2] (PQ), a 9,10-phenanthrenequinone (PQ) analogue of affords only trans-[Ru(III)(PQ)(PPh3)2Cl2](+)Br3(-) ((+)Br3(-)). Considering the X-ray bond parameters, EPR spectra and the atomic spin densities obtained from the density functional theory (DFT) calculations, is defined as a PIQ˙(-) (average C-O/N and C-C lengths, 1.280(2) and 1.453(3) Å) complex of ruthenium(ii) while is a neutral PIQ (average C-O, C-N, C-C and C-O/N lengths, 1.248(7), 1.284(7), 1.485(8) and 1.266(7) Å) complex of the ruthenium(iii) ion. The single crystal X-ray bond parameters proposed that (+)I3(-) (average C-O/N and C-C lengths, 1.294(8) and 1.449(9) Å) and (average C-O/N and C-C lengths, 1.289(2) and 1.447(4) Å) are PIQ˙(-) complexes of ruthenium(iii), while the (+) ion (average C-O/N and C-C lengths, 1.288 ± 0.004 and 1.450 ± 0.017 Å) is a co-facial bi-octahedral complex of ruthenium(iii). In contrast, the (+) ion is a PQ complex of the ruthenium(iii) ion. EPR spectra and the calculated atomic spin densities authenticated that the (+) ion obtained after constant potential coulometric oxidation of is a PIQ complex of ruthenium(iii), while the (-) ion is a hybrid state of [Ru(II)(PIQ˙(-))] and [Ru(III)(PIQ(2-))] states. It is observed that the PIQ˙(-) state in which spin is more localized on the nitrogen (∼38% in and ∼35% in (-) ion) is stable and the coordination of the PIQ(2-) state is not observed in this study. Redox activities, UV-vis/NIR absorption spectra and their origins and the spectroelectrochemical measurements for → (+), → (-) and (+) → (2+) conversions are analyzed.
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Affiliation(s)
- Sachinath Bera
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata-103, India.
| | - Suvendu Maity
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata-103, India.
| | - Thomas Weyhermüller
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstrasse 34-36, D-45470 Mülheim, Germany
| | - Prasanta Ghosh
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata-103, India.
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323
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Bera S, Mondal S, Maity S, Weyhermüller T, Ghosh P. Radical and Non-Radical States of the [Os(PIQ)] Core (PIQ = 9,10-Phenanthreneiminoquinone): Iminosemiquinone to Iminoquinone Conversion Promoted o-Metalation Reaction. Inorg Chem 2016; 55:4746-56. [DOI: 10.1021/acs.inorgchem.6b00040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sachinath Bera
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
| | - Sandip Mondal
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
| | - Suvendu Maity
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
| | - Thomas Weyhermüller
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstrasse 34-36, D-45470 Mülheim, Germany
| | - Prasanta Ghosh
- Department
of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 103, India
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324
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Sun Y, Tang H, Chen K, Hu L, Yao J, Shaik S, Chen H. Two-State Reactivity in Low-Valent Iron-Mediated C–H Activation and the Implications for Other First-Row Transition Metals. J Am Chem Soc 2016; 138:3715-30. [DOI: 10.1021/jacs.5b12150] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yihua Sun
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hao Tang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Kejuan Chen
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lianrui Hu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jiannian Yao
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Sason Shaik
- Institute
of Chemistry and the Lise Meitner-Minerva Center for Computational
Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Hui Chen
- Beijing
National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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325
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Jacquet J, Blanchard S, Derat E, Desage-El Murr M, Fensterbank L. Redox-ligand sustains controlled generation of CF 3 radicals by well-defined copper complex. Chem Sci 2016; 7:2030-2036. [PMID: 29899928 PMCID: PMC5968567 DOI: 10.1039/c5sc03636d] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/27/2015] [Indexed: 01/17/2023] Open
Abstract
A well-defined copper complex bearing iminosemiquinone ligands performs single electron reduction of an electrophilic CF3+ source into CF˙3 radicals. This redox behavior is enabled by the ligand which shuttles through two different redox states (iminosemiquinone and iminobenzoquinone) while the copper center is preserved as a Cu(ii). This system was used in the trifluoromethylation of silyl enol ethers, heteroaromatics and in the hydrotrifluoromethylation of alkynes. This is the first example of cooperative redox catalysis for the controlled generation of CF˙3 radicals.
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Affiliation(s)
- Jérémy Jacquet
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Sébastien Blanchard
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Etienne Derat
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Marine Desage-El Murr
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire , UMR CNRS 8232 , Sorbonne Universités UPMC Univ Paris 06 , 4 Place Jussieu, CC 229 , 75252 Paris Cedex 05 , France . ;
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326
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Ngo KT, Lee NA, Pinnace SD, Szalda DJ, Weber RT, Rochford J. Probing the Noninnocent π-Bonding Influence of N-Carboxyamidoquinolate Ligands on the Light Harvesting and Redox Properties of Ruthenium Polypyridyl Complexes. Inorg Chem 2016; 55:2460-72. [DOI: 10.1021/acs.inorgchem.5b02834] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Ken T. Ngo
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Nicholas A. Lee
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Sashari D. Pinnace
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - David J. Szalda
- Chemistry Department, Baruch College, New York, New York 10010, United States
| | - Ralph T. Weber
- EPR Division, Bruker BioSpin Corporation, 44 Manning Road, Billerica, Massachusetts 01821, United States
| | - Jonathan Rochford
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
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327
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Eberle B, Damjanović M, Enders M, Leingang S, Pfisterer J, Krämer C, Hübner O, Kaifer E, Himmel HJ. Radical Monocationic Guanidino-Functionalized Aromatic Compounds (GFAs) as Bridging Ligands in Dinuclear Metal Acetate Complexes: Synthesis, Electronic Structure, and Magnetic Coupling. Inorg Chem 2016; 55:1683-96. [DOI: 10.1021/acs.inorgchem.5b02614] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Benjamin Eberle
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Marko Damjanović
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Markus Enders
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Simone Leingang
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Jessica Pfisterer
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Christoph Krämer
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Olaf Hübner
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Elisabeth Kaifer
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hans-Jörg Himmel
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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328
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Tang Z, Tejel C, Martinez de Sarasa Buchaca M, Lutz M, van der Vlugt JI, de Bruin B. Reactivity of Me-pma RhIand IrIComplexes upon Deprotonation and Their Application in Catalytic Carbene Carbonylation Reactions. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501302] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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329
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Broere DLJ, Modder DK, Blokker E, Siegler MA, van der Vlugt JI. Metal-Metal Interactions in Heterobimetallic Complexes with Dinucleating Redox-Active Ligands. Angew Chem Int Ed Engl 2016; 55:2406-10. [DOI: 10.1002/anie.201509412] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/05/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Daniël L. J. Broere
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Dieuwertje K. Modder
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Eva Blokker
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Maxime A. Siegler
- Department of Chemistry; John Hopkins University; 3400 N, Charles St. Baltimore MD 21218 USA
| | - Jarl Ivar van der Vlugt
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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330
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Broere DLJ, Modder DK, Blokker E, Siegler MA, van der Vlugt JI. Metal-Metal Interactions in Heterobimetallic Complexes with Dinucleating Redox-Active Ligands. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509412] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Daniël L. J. Broere
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Dieuwertje K. Modder
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Eva Blokker
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Maxime A. Siegler
- Department of Chemistry; John Hopkins University; 3400 N, Charles St. Baltimore MD 21218 USA
| | - Jarl Ivar van der Vlugt
- van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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331
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Liberman-Martin AL, Levine DS, Liu W, Bergman RG, Tilley TD. Biaryl Reductive Elimination Is Dramatically Accelerated by Remote Lewis Acid Binding to a 2,2′-Bipyrimidyl–Platinum Complex: Evidence for a Bidentate Ligand Dissociation Mechanism. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b01003] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Daniel S. Levine
- Department
of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
| | - Wenjun Liu
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Robert G. Bergman
- Department
of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
| | - T. Don Tilley
- Department
of Chemistry, University of California−Berkeley, Berkeley, California 94720, United States
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332
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Shit M, Maity S, Bera S, Weyhermüller T, Ghosh P. Coordination of o-benzosemiquinonate, o-iminobenzosemiquinonate, 4,4′-di-tert-butyl-2,2′-bipyridine and 1,10-phenanthroline anion radicals to oxidovanadium(iv). NEW J CHEM 2016. [DOI: 10.1039/c6nj02220k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Coordination of semiquinonate and heterocyclic α-diimine anion radicals to oxidovanadium(iv) is authenticated.
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Affiliation(s)
- Madhusudan Shit
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
| | - Suvendu Maity
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
| | - Sachinath Bera
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
| | | | - Prasanta Ghosh
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-103
- India
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333
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Ghorui T, Roy S, Pramanik S, Pramanik K. RhCl(PPh3)3-mediated C–H oxyfunctionalization of pyrrolido-functionalized bisazoaromatic pincers: a combined experimental and theoretical scrutiny of redox-active and spectroscopic properties. Dalton Trans 2016; 45:5720-9. [DOI: 10.1039/c5dt05044h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Non-trivial coordination mode of symmetrical NNN ligands with Rh(iii) leads to redox-active NNO-scaffolds via C(sp2)–H oxyfunctionalization at rt, opening an opportunity to juxtapose different redox-active domains.
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Affiliation(s)
- Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
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334
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Mondal MK, Tiwari A, Mukherjee C. Solid-state valence tautomeric octahedral {CoII[(BQ-N-Cat)]2}0 complex formation via ligand-centered phenolic C–O bond breaking and Co–O bond making. Chem Commun (Camb) 2016; 52:11995-11998. [DOI: 10.1039/c6cc06433g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An octahedral {CoII[(BQ-N-Cat)]2}0 complex was formed by ligand-centered phenolic C–O bond cleavage. The complex showed solid-state valence tautomerism that is triggered by lattice solvent molecule.
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Affiliation(s)
- Manas Kumar Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Archana Tiwari
- Department of Physics
- School of Physical Sciences
- Sikkim University
- Gangtok–737102
- India
| | - Chandan Mukherjee
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
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335
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Riaz U, Ashraf SM, Aleem S, Budhiraja V, Jadoun S. Microwave-assisted green synthesis of some nanoconjugated copolymers: characterisation and fluorescence quenching studies with bovine serum albumin. NEW J CHEM 2016. [DOI: 10.1039/c5nj02513c] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The copolymer POPD-co-PNA quenches BSA fluorescence revealing many of its photophysical characteristics including a higher association constant and its scintillating presence on the latter.
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Affiliation(s)
- Ufana Riaz
- Materials Research Laboratory
- Department of Chemistry Jamia Millia Islamia (A Central University)
- New Delhi-110025
- India
| | - S. M. Ashraf
- Materials Research Laboratory
- Department of Chemistry Jamia Millia Islamia (A Central University)
- New Delhi-110025
- India
| | - Sadaf Aleem
- Materials Research Laboratory
- Department of Chemistry Jamia Millia Islamia (A Central University)
- New Delhi-110025
- India
| | - Vaibhav Budhiraja
- Materials Research Laboratory
- Department of Chemistry Jamia Millia Islamia (A Central University)
- New Delhi-110025
- India
| | - Sapana Jadoun
- Materials Research Laboratory
- Department of Chemistry Jamia Millia Islamia (A Central University)
- New Delhi-110025
- India
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336
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Cui P, Babbini DC, Iluc VM. C–H activation of ethers by pyridine tethered PCsp3P-type iridium complexes. Dalton Trans 2016; 45:10007-16. [DOI: 10.1039/c6dt00303f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An iridium complex supported by a PCPyP ligand featuring an internal pyridine tether showed selective mono-C–H activation of ethers, which represent intermediates in the synthesis of the corresponding Fischer carbenes.
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Affiliation(s)
- Peng Cui
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame
- USA
| | - Dominic C. Babbini
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame
- USA
| | - Vlad M. Iluc
- Department of Chemistry and Biochemistry
- University of Notre Dame
- Notre Dame
- USA
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337
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Yamada S, Matsumoto T, Wakizaka M, Chang HC. Highly polar solvent-induced disproportionation of a cationic Pt(ii)–diimine complex containing an o-semiquinonato. Dalton Trans 2016; 45:4974-7. [DOI: 10.1039/c6dt00487c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The unprecedented disproportionation of [PtII(3,5-DTBSQ)(DTBbpy)]+PF6− in highly polar solvents, DMSO and DMF, was elucidated for the first time.
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Affiliation(s)
- Shota Yamada
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Takeshi Matsumoto
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Masanori Wakizaka
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Ho-Chol Chang
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
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338
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Mondal MK, Mukherjee C. An unprecedented one-step synthesis of octahedral Cu(ii)-bis(iminoquinone) complexes and their reactivity with NaBH4. Dalton Trans 2016; 45:13532-40. [DOI: 10.1039/c6dt02443b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The non-innocent ligands, H2LAP(o-NO2-OPh) and H2LAP, upon reacting with 2 equivalents of CuCl2·2H2O in the presence of Et3N and air provided the corresponding octahedral Cu(ii)-bis(iminoquinone) complexes (2 and 3) in one-step. The complexes underwent reduction by NaBH4 in dry CH3CN and produced H2 gas.
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Affiliation(s)
- Manas Kumar Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Chandan Mukherjee
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
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339
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Jongbloed LS, de Bruin B, Reek JNH, Lutz M, van der Vlugt JI. Reversible cyclometalation at RhI as a motif for metal–ligand bifunctional bond activation and base-free formic acid dehydrogenation. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01505g] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of base-free catalytic dehydrogenation of formic acid using reversible cyclometalation at Rh(i) is discussed, using a combination of experimental and computational methods.
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Affiliation(s)
- L. S. Jongbloed
- Homogeneous, Bioinspired & Supramolecular Catalysis
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - B. de Bruin
- Homogeneous, Bioinspired & Supramolecular Catalysis
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - J. N. H. Reek
- Homogeneous, Bioinspired & Supramolecular Catalysis
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
| | - M. Lutz
- Crystal & Structural Chemistry
- Bijvoet Center for Biomolecular Research
- Utrecht University
- The Netherlands
| | - J. I. van der Vlugt
- Homogeneous, Bioinspired & Supramolecular Catalysis
- van 't Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1098 XH Amsterdam
- The Netherlands
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340
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Nadif SS, O'Reilly ME, Ghiviriga I, Abboud KA, Veige AS. Remote Multiproton Storage within a Pyrrolide-Pincer-Type Ligand. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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341
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Pascui AE, van Rees K, Zant DW, Broere DLJ, Siegler MA, van der Vlugt JI. Macrocyclic Platinum(II) Complexes with a Bifunctional Diphosphine Ligand. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Andrea E. Pascui
- Homogeneous, Bio‐inspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands, http://www.homkat.nl
| | - Karlotta van Rees
- Homogeneous, Bio‐inspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands, http://www.homkat.nl
| | - Dirk W. Zant
- Homogeneous, Bio‐inspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands, http://www.homkat.nl
| | - Daniël L. J. Broere
- Homogeneous, Bio‐inspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands, http://www.homkat.nl
| | - Maxime A. Siegler
- Department of Chemistry, John Hopkins University, 3400 N Charles Street, Baltimore, Maryland 21218, USA
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bio‐inspired and Supramolecular Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands, http://www.homkat.nl
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342
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Nadif SS, O'Reilly ME, Ghiviriga I, Abboud KA, Veige AS. Remote Multiproton Storage within a Pyrrolide-Pincer-Type Ligand. Angew Chem Int Ed Engl 2015; 54:15138-42. [DOI: 10.1002/anie.201507008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 11/08/2022]
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