1
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Alderman NP, Peneau V, Viasus CJ, Korobkov I, Vidjayacoumar B, Albahily K, Gambarotta S. Efficient reduction of formic acid to formaldehyde by zinc. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The possibility of thermally reducing formic acid to formaldehyde selectively has been probed using metallic zinc. Good selectivity (over 80%) was obtained with low concentrations of formic acid, with methanol and methyl formate as secondary products. The selectivity can be tuned by changing the carrier gas flow, temperature, and zinc amount. Zinc was oxidized to zinc oxide during this process.
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Affiliation(s)
| | - Virginie Peneau
- Department of Chemistry, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Camilo J. Viasus
- Department of Chemistry, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Ilia Korobkov
- Advanced Catalysis SABIC CDR Centre at KAUST, Thuwal, 23955, Saudi Arabia
| | | | - Khalid Albahily
- Advanced Catalysis SABIC CDR Centre at KAUST, Thuwal, 23955, Saudi Arabia
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, ON K1N 6N5, Canada
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2
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Alderman NP, Peneau V, Viasus CJ, Korobkov I, Vidjayacoumar B, Albahily K, Gambarotta S. Syn-gas from waste: the reduction of CO 2 with H 2S. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00334c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this paper, we demonstrate that syngas (H2/CO) can be produced from oil waste (H2S/CO2) forming SO2 and S as secondary products at 600–800 °C in a flow reactor set-up.
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Affiliation(s)
| | | | | | - Ilia Korobkov
- Advanced Catalysis SABIC CDR Centre at KAUST
- Thuwal
- Saudi Arabia
| | | | - Khalid Albahily
- Advanced Catalysis SABIC CDR Centre at KAUST
- Thuwal
- Saudi Arabia
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3
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Hameed Y, Ouanounou S, Jurca T, Gabidullin B, Korobkov I, Richeson D. Dimers, monomers and pentacoordination in a series of earth-abundant transition metal dibromido complexes supported by a neutral SNS ligand framework. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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4
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Rummelt SM, Zhong H, Korobkov I, Chirik PJ. Iron-Mediated Coupling of Carbon Dioxide and Ethylene: Macrocyclic Metallalactones Enable Access to Various Carboxylates. J Am Chem Soc 2018; 140:11589-11593. [DOI: 10.1021/jacs.8b07558] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan M. Rummelt
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Hongyu Zhong
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Ilia Korobkov
- SABIC Corporate Research & Development, Fundamental Catalysis, Thuwal 23955-6900, Saudi Arabia
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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5
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Brunet G, Sebastiao E, Witkowski TG, Korobkov I, Gabidullin B, Murugesu M. A nitrogen-rich ligand as a scaffold for slow magnetic relaxation in dysprosium-based 0D and 1D architectures. Dalton Trans 2018; 47:11782-11787. [PMID: 29457822 DOI: 10.1039/c8dt00146d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A recently designed nitrogen-rich ligand is successfully applied as a scaffold for lanthanide ions to show that the intricate chemistry of energetic materials can be combined with other fields of research, including that of molecular magnetism. Herein, we report the synthesis of two different types of molecular architectures using a single ligand template, in which the discrete monomer exhibits single-molecule magnet-like behaviour along with two well-isolated modes of magnetic relaxation.
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Affiliation(s)
- Gabriel Brunet
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5.
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6
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Joannou MV, Bezdek MJ, Albahily K, Korobkov I, Chirik PJ. Synthesis and Reactivity of Reduced α-Diimine Nickel Complexes Relevant to Acrylic Acid Synthesis. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00350] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew V. Joannou
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States of America
| | - Máté J. Bezdek
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States of America
| | - Khalid Albahily
- SABIC Corporate Research & Development, Fundamental Catalysis, Thuwal 23955-6900, Saudi Arabia
| | - Ilia Korobkov
- SABIC Corporate Research & Development, Fundamental Catalysis, Thuwal 23955-6900, Saudi Arabia
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States of America
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7
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Afzali SH, Alzamly A, Firouzi R, Korobkov I, Gambarotta S. Radical chemistry of alkyl aluminum with quinoxaline ligands. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1450977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | - Ahmed Alzamly
- Department of Chemistry, UAE University, Al-Ain, UAE
| | - Rohoullah Firouzi
- Department of Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
| | - Ilia Korobkov
- Department of Chemistry, University of Ottawa, Ottawa, Canada
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8
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Brunet G, Safin DA, Robeyns K, Facey GA, Korobkov I, Filinchuk Y, Murugesu M. Confinement effects of a crystalline sponge on ferrocene and ferrocene carboxaldehyde. Chem Commun (Camb) 2018; 53:5645-5648. [PMID: 28480926 DOI: 10.1039/c7cc02470c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pivotal role of ππ interactions in the inclusion behaviour of a series of organometallic sandwich compounds is studied through single-crystal X-ray diffraction. The confinement effects of a crystalline sponge host are investigated where, notably, we observe an enhanced rotation of the ligand ring once encapsulated by the nanoporous framework, as evidenced by SSNMR experiments.
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Affiliation(s)
- Gabriel Brunet
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, ON, Canada K1N 6N5.
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9
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Rao GK, Pell W, Gabidullin B, Korobkov I, Richeson D. Electro- and Photocatalytic Generation of H 2 Using a Distinctive Co II "PN 3 P" Pincer Supported Complex with Water or Saturated Saline as a Hydrogen Source. Chemistry 2017; 23:16763-16767. [PMID: 29044839 DOI: 10.1002/chem.201704882] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Indexed: 12/18/2022]
Abstract
Efficient electrocatalytic production of H2 from mixed water/acetonitrile solutions was achieved using three new CoII complexes supported by the neutral pincer ligand bis(diphenylphosphino)-2,6-di(methylamino)pyridine ("PN3 P"). At -1.9 V vs. Fc/Fc+ , these catalysts showed 96 % Faradaic efficiency with added water or saturated aqueous saline at rates of up to 316 L(mol cat)-1 (cm2 )-1 h-1 using a glassy carbon working electrode. The complex [Co(κ3 -2,6-{Ph2 PNMe}2 (NC5 H3 )Br2 ] (1) was also able to photocatalytically reduce water to hydrogen in the presence of a Ru(bpy)32+ photosensitizer and a reductant.
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Affiliation(s)
- Gyandshwar Kumar Rao
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Wendy Pell
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
| | - Darrin Richeson
- Department of Chemistry and Biomolecular Science, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, K1N 6N5, USA
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10
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Viasus CJ, Alderman NP, Licciulli S, Korobkov I, Gambarotta S. Radical Behavior of CO2versus its Deoxygenation Promoted by Vanadium Aryloxide Complexes: How the Geometry of Intermediate CO2-Adducts Determines the Reactivity. Chemistry 2017; 23:17269-17278. [DOI: 10.1002/chem.201702943] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Camilo J. Viasus
- Department of Chemistry and Biomolecular Science; University of Ottawa; 10 Marie Curie Ottawa ON Canada
| | - Nicholas P. Alderman
- Department of Chemistry and Biomolecular Science; University of Ottawa; 10 Marie Curie Ottawa ON Canada
| | - Sebastiano Licciulli
- Department of Chemistry and Biomolecular Science; University of Ottawa; 10 Marie Curie Ottawa ON Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Science; University of Ottawa; 10 Marie Curie Ottawa ON Canada
| | - Sandro Gambarotta
- Department of Chemistry and Biomolecular Science; University of Ottawa; 10 Marie Curie Ottawa ON Canada
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11
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Das UK, Daifuku SL, Iannuzzi TE, Gorelsky SI, Korobkov I, Gabidullin B, Neidig ML, Baker RT. Iron(II) Complexes of a Hemilabile SNS Amido Ligand: Synthesis, Characterization, and Reactivity. Inorg Chem 2017; 56:13766-13776. [PMID: 29112382 DOI: 10.1021/acs.inorgchem.7b01802] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report an easily prepared bis(thioether) amine ligand, SMeNHSMe, along with the synthesis, characterization, and reactivity of the paramagnetic iron(II) bis(amido) complex, [Fe(κ3-SMeNSMe)2] (1). Binding of the two different thioethers to Fe generates both five- and six-membered rings with Fe-S bonds in the five-membered rings (av 2.54 Å) being significantly shorter than those in the six-membered rings (av 2.71 Å), suggesting hemilability of the latter thioethers. Consistent with this hypothesis, magnetic circular dichroism (MCD) and computational (TD-DFT) studies indicate that 1 in solution contains a five-coordinate component [Fe(κ3-SMeNSMe)(κ2-SMeNSMe)] (2). This ligand hemilability was demonstrated further by reactivity studies of 1 with 2,2'-bipyridine, 1,2-bis(dimethylphosphino)ethane, and 2,6-dimethylphenyl isonitrile to afford iron(II) complexes [L2Fe(κ2-SMeNSMe)2] (3-5). Addition of a Brønsted acid, HNTf2, to 1 produces the paramagnetic, iron(II) amine-amido cation, [Fe(κ3-SMeNSMe)(κ3-SMeNHSMe)](NTf2) (6; Tf = SO2CF3). Cation 6 readily undergoes amine ligand substitution by triphos, affording the 16e- complex [Fe(κ2-SMeNSMe)(κ3-triphos)](NTf2) (7; triphos = bis(2-diphenylphosphinoethyl)phenylphosphine). These complexes are characterized by elemental analysis; 1H NMR, Mössbauer, IR, and UV-vis spectroscopy; and single-crystal X-ray diffraction. Preliminary results of amine-borane dehydrogenation catalysis show complex 7 to be a selective and particularly robust precatalyst.
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Affiliation(s)
- Uttam K Das
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Stephanie L Daifuku
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Theresa E Iannuzzi
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Serge I Gorelsky
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Michael L Neidig
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
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12
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Joannou MV, Bezdek MJ, Al-Bahily K, Korobkov I, Chirik PJ. Synthesis and Reactivity of Pyridine(diimine) Molybdenum Olefin Complexes: Ethylene Dimerization and Alkene Dehydrogenation. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00653] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew V. Joannou
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Máté J. Bezdek
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Khalid Al-Bahily
- SABIC Corporate Research & Development, Fundamental Catalysis, Thuwal 23955-6900, Saudi Arabia
| | - Ilia Korobkov
- SABIC Corporate Research & Development, Fundamental Catalysis, Thuwal 23955-6900, Saudi Arabia
| | - Paul J. Chirik
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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13
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14
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Harriman KLM, Korobkov I, Murugesu M. From a Piano Stool to a Sandwich: A Stepwise Route for Improving the Slow Magnetic Relaxation Properties of Thulium. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00449] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Katie L. M. Harriman
- Department
of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Muralee Murugesu
- Department
of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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15
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Lemes MA, Brunet G, Pialat A, Ungur L, Korobkov I, Murugesu M. Strong ferromagnetic exchange coupling in a {Ni} cluster mediated through an air-stable tetrazine-based radical anion. Chem Commun (Camb) 2017; 53:8660-8663. [PMID: 28718476 DOI: 10.1039/c7cc04554a] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A planar tetradentate 3,6-bis(2-pyrimidyl)-1,2,4,5-tetrazine (BpymTz) templating chelate affords the formation of an unprecedented BpymTz˙- radical anion bridged {Ni} complex. Detailed magnetic measurements performed on the isolated air stable [Ni(BpymTz˙-)Cl6(DMF)8]Cl·0.5(H2O) compound reveal strong ferromagnetic NiII-BpymTz˙- interactions with a coupling constant of J = 98.84 cm-1.
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Affiliation(s)
- Maykon A Lemes
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada.
| | - Gabriel Brunet
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada.
| | - Amélie Pialat
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada.
| | - Liviu Ungur
- Theory of Nanomaterials Group and INPC - Institute for Nanoscale Physics and Chemistry, Katholieke Universitiet Leuven, Celestijnenlaan, 200F, 3001 Leuven, Belgium
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada.
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada.
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16
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Lee GM, Leung ASC, Harrison DJ, Korobkov I, Hughes RP, Baker RT. Experimental and Computational Evidence for 1,4-Diradical Intermediates in Reactions of Cobalt Fluorocarbene Complexes with Terminal Aryl-alkynes to give Metallacyclobutenes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00344] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Graham M. Lee
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Alicia S. C. Leung
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Daniel J. Harrison
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Russell P. Hughes
- Department
of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - R. Tom Baker
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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17
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Coyle JP, Sirianni ER, Korobkov I, Yap GPA, Dey G, Barry ST. Study of Monomeric Copper Complexes Supported by N-Heterocyclic and Acyclic Diamino Carbenes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00292] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jason P. Coyle
- Department
of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Eric R. Sirianni
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Ilia Korobkov
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Glenn P. A. Yap
- Department of Chemistry & Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Gangotri Dey
- Department
of Chemistry and Chemical Biology, Rutgers University-New Brunswick, Piscataway, New Jersey 08854-8066, United States
| | - Seán T. Barry
- Department
of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
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18
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Brunet G, Safin DA, Aghaji MZ, Robeyns K, Korobkov I, Woo TK, Murugesu M. Stepwise crystallographic visualization of dynamic guest binding in a nanoporous framework. Chem Sci 2017; 8:3171-3177. [PMID: 28626553 PMCID: PMC5465547 DOI: 10.1039/c7sc00267j] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 02/11/2017] [Indexed: 11/22/2022] Open
Abstract
Binding sites are at the heart of all host-guest systems, whether biological or chemical. When considering binding sites that form covalent bonds with the guest, we generally envision a single, highly specific binding motif. Through single-crystal X-ray crystallography, the dynamic binding of a guest that displays a variety of covalent binding motifs in a single site of adsorption is directly observed for the first time. The stepwise crystallographic visualization of the incorporation of I2 within a porous MOF is presented, wherein the preferred binding motifs throughout the uptake process are identified. The guest I2 molecules initially bind with terminal iodide atoms of the framework to form [I4]2- units. However, as the adsorption progresses, the I2 molecules are observed to form less energetically favorable I3- groups with the same framework iodide atoms, thereby allowing for more guest molecules to be chemisorbed. At near saturation, even more binding motifs are observed in the same pores, including both physisorbed and chemisorbed guest molecules. Herein, we present the successful identification of a unique set of host-guest interactions which will drive the improvement of high capacity iodine capture materials.
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Affiliation(s)
- Gabriel Brunet
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario K1N 6N5 , Canada . ;
| | - Damir A Safin
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario K1N 6N5 , Canada . ;
| | - Mohammad Z Aghaji
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario K1N 6N5 , Canada . ;
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences , Université Catholique de Louvain , Place L. Pasteur 1 , B-1348 Louvain-la-Neuve , Belgium
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario K1N 6N5 , Canada . ;
| | - Tom K Woo
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario K1N 6N5 , Canada . ;
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario K1N 6N5 , Canada . ;
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19
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Giffin KA, Pua LA, Piotrkowski S, Gabidullin BM, Korobkov I, Hughes RP, Baker RT. Generation of Hydrofluoronickelacycles from Trifluoroethylene and Ni(0): Ligand Effects on Regio-/Stereoselectivity and Reactivity. J Am Chem Soc 2017; 139:4075-4086. [DOI: 10.1021/jacs.6b12607] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kaitie A. Giffin
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Lorraine A. Pua
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Sarah Piotrkowski
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Bulat M. Gabidullin
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Russell P. Hughes
- Department
of Chemistry, Dartmouth College, 6128 Burke Laboratories, Hanover, New Hampshire 03755, United States
| | - R. Tom Baker
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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20
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Rao GK, Jamshidi MP, Dawkins JIG, Pell W, Korobkov I, Richeson D. Electrocatalytic generation of H2 from neutral water in acetonitrile using manganese polypyridyl complexes with ligand assistance. Dalton Trans 2017; 46:6518-6522. [DOI: 10.1039/c7dt01039g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The earth-abundant element, manganese can be employed in electrocatalytically active complexes for H2 generation from neutral water added to acetonitrile solutions.
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Affiliation(s)
- Gyandshwar Kumar Rao
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Mohammad Parsa Jamshidi
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Jeremy I. G. Dawkins
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Wendy Pell
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Darrin Richeson
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
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21
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Lacelle T, Brunet G, Pialat A, Holmberg RJ, Lan Y, Gabidullin B, Korobkov I, Wernsdorfer W, Murugesu M. Single-molecule magnet behaviour in a tetranuclear DyIII complex formed from a novel tetrazine-centered hydrazone Schiff base ligand. Dalton Trans 2017; 46:2471-2478. [DOI: 10.1039/c6dt04413a] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A tetranuclear dysprosium complex, bridged by a novel tetrazine-centered Schiff base ligand, exhibits ferromagnetic exchange coupling and a large anisotropic barrier.
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Affiliation(s)
- T. Lacelle
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - G. Brunet
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - A. Pialat
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - R. J. Holmberg
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - Y. Lan
- Institut Néel
- CNRS and Université Grenoble Alpes
- 38042 Grenoble
- France
| | - B. Gabidullin
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - I. Korobkov
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - W. Wernsdorfer
- Institut Néel
- CNRS and Université Grenoble Alpes
- 38042 Grenoble
- France
- Physikalisches Institut
| | - M. Murugesu
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
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22
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Chu T, Boyko Y, Korobkov I, Kuzmina LG, Howard JAK, Nikonov GI. Oxidative Addition of Disulfides, Alkyl Sulfides, and Diphosphides to an Aluminum(I) Center. Inorg Chem 2016; 55:9099-104. [DOI: 10.1021/acs.inorgchem.6b01668] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Terry Chu
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Yaroslav Boyko
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Ilia Korobkov
- X-ray Core Facility,
Faculty of Science, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada
| | - Lyudmila G. Kuzmina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, 31 Leninskii Prospekt, Moscow 119991, Russia
| | - Judith A. K. Howard
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Georgii I. Nikonov
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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23
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Harriman KLM, Le Roy JJ, Ungur L, Holmberg RJ, Korobkov I, Murugesu M. Cycloheptatrienyl trianion: an elusive bridge in the search of exchange coupled dinuclear organolanthanide single-molecule magnets. Chem Sci 2016; 8:231-240. [PMID: 28451170 PMCID: PMC5355948 DOI: 10.1039/c6sc01224h] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 08/05/2016] [Indexed: 11/21/2022] Open
Abstract
Lanthanide inverse sandwich compounds of the cycloheptatrienyl trianion give rise to ferromagnetic exchange and slow relaxation of the magnetisation.
The preparation of η-cyclopentadienyl (η5-C5R5), η-arene (η6-C6R6), and η-cyclooctatetraenyl (η8-C8R8) bridging motifs are common in organometallic chemistry; however, the synthetic preparation of η-cycloheptatrienyl (η7-C7R7) bridging motifs has remained a synthetic challenge in 4f chemistry. To this end, we have developed a synthetic route towards a series of rare dinuclear organolanthanide inverse sandwich complexes containing the elusive η7-C7H7 bridge. Herein, we present the structures and magnetic properties of the lanthanide inverse sandwich complexes [KLn2(C7H7)(N(SiMe3)2)4] (Ln = GdIII (1), DyIII (2), ErIII (3)) and [K(THF)2Er2(C7H7)(N(SiMe3)2)4] (4). These compounds are the first single-molecule magnets (SMMs) to feature this type of bridging motif. Furthermore, η7-C7H7 was found to efficiently promote ferromagnetic exchange interactions between metal ions. Variable temperature dc magnetic susceptibility measurements and subsequent simulations give significant exchange constants of J = +1.384, +1.798, and +3.149 cm–1 and dipolar constants of J = –0.603, –0.601, and –0.475 cm–1 for compounds 2–4, respectively. Frequency dependent ac susceptibility measurements under an applied static field resulted in the observation of dual relaxation processes, and brought forth a greater understanding of the intermolecularly driven process at high frequency. In particular, this type of analysis of compound 3 under 800 Oe elicited an energy barrier of Ueff = 58 K. Ab initio calculations were performed in order to understand the nature of magnetic coupling and the origin of slow relaxation of magnetisation. Through these studies, the effect of the amido ancillary ligands on the magnetic axiality of the lanthanide ions was found to be competitive with the crystal field of the η7-C7H7 π-electron cloud. Our findings suggest that the tunability of the dipolar and exchange components of the magnetic interactions lie within the dihedral angle imposed by the amido ligands, thus offering potential for the development of new exchange coupled lanthanide systems.
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Affiliation(s)
- Katie L M Harriman
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario , Canada K1N 6N5 . ; ; Tel: +1-613-562-5800 ext. 2733
| | - Jennifer J Le Roy
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario , Canada K1N 6N5 . ; ; Tel: +1-613-562-5800 ext. 2733
| | - Liviu Ungur
- Theory of Nanomaterials Group , INPAC - Institute of Nanoscale Physics and Chemistry , Katholieke Universiteit Leuven , Celestijnenlaan 200F , 3001 Leuven , Belgium.,Division of Theoretical Chemistry , Lund University , Getingevagen 60, P. O. Box 124 , 22100 , Lund , Sweden
| | - Rebecca J Holmberg
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario , Canada K1N 6N5 . ; ; Tel: +1-613-562-5800 ext. 2733
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario , Canada K1N 6N5 . ; ; Tel: +1-613-562-5800 ext. 2733
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ontario , Canada K1N 6N5 . ; ; Tel: +1-613-562-5800 ext. 2733
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24
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Bulsink P, Al-Ghamdi A, Joshi P, Korobkov I, Woo T, Richeson D. Capturing Re(i) in an neutral N,N,N pincer Scaffold and resulting enhanced absorption of visible light. Dalton Trans 2016; 45:8885-96. [PMID: 27151420 DOI: 10.1039/c6dt00661b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The organometallic and coordination chemistry of rhenium(i) has been largely restricted to bidentate α-diimine ligation and facial tricarbonyl coordination geometries. The thermal transformation of bidentate bis(imino)pyridine and bidentate terpyridine complexes at 200-240 °C under nitrogen led to a family of Re(i) pincer complexes [κ(3)-2,6-{ArN[double bond, length as m-dash]CMe}2(NC5H3)]Re(CO)2X (Ar[double bond, length as m-dash]C6H5, Me2C6H3, (i)Pr2C6H3; X = Cl, Br) and (κ(3)-terpy)Re(CO)2X (X = Cl, Br). The synthesis, single crystal X-ray structural and spectroscopic characterization of these eight species documents their Re coordination geometries and demonstrates the accessibility of such compounds. The basic photophysical features of these compounds show significant elaboration in both number and intensity of the d-π* transitions observed in the UV-vis spectra relative to the bidentate starting materials and these spectra were analyzed using time-dependent DFT computations.
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Affiliation(s)
- Philip Bulsink
- Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, ON, Canada.
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25
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Rao GK, Pell W, Korobkov I, Richeson D. Electrocatalytic reduction of CO2 using Mn complexes with unconventional coordination environments. Chem Commun (Camb) 2016; 52:8010-3. [PMID: 27264057 DOI: 10.1039/c6cc03827a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New complexes, Mn{κ(3)-[2,6-{Ph2PNMe}2(NC5H3)]}(CO)3(+)Br(-) (1(+)Br(-)) and MnBr{κ(2)-(Ph2P)NMe(NC5H4)}(CO)3 (2), are reported and present new ligand environments for CO2 electrocatalytic reduction to CO. Compound 1(+) presents a unique metal geometry for CO production (96%) in the absence of added water while 2 required addition of water and generated both CO and H2 products.
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Affiliation(s)
- Gyandshwar Kumar Rao
- Department of Chemistry and Biomolecular Sciences and the Center for Catalysis and Research Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON K1N6N5, Canada.
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26
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Harriman KLM, Kühne IA, Leitch AA, Korobkov I, Clérac R, Murugesu M, Brusso JL. Halide Influence on Molecular and Supramolecular Arrangements of Iron Complexes with a 3,5-Bis(2-Pyridyl)-1,2,4,6-Thiatriazine Ligand. Inorg Chem 2016; 55:5375-83. [PMID: 27152549 DOI: 10.1021/acs.inorgchem.6b00357] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of iron centered complexes, namely, [Fe(Py2TTA)Cl2] (1), [Fe(Py2TTA)Br2] (2), and [Fe(μ-F)(Py2TTAO)F]∞ (3), were isolated via complexation of 3,5-bis(2-pyridyl)-1,2,4,6-thiatriazine (Py2TTAH) with various ferric halides (e.g., FeF3, FeCl3, and FeBr3). Comparison of the optical and electrochemical spectroscopy, structural analysis, and magnetic studies reveal numerous similarities between the chlorido (1) and bromido (2) derivatives, which crystallize as discrete five-coordinate iron centered complexes with coordination geometries that are intermediate between trigonal bipyramidal and square base pyramid. Conversely, the fluorido derivative (3) results in a completely different structure due to oxidation of the ligand and the formation of a one-dimensional coordination polymer held together through a bridging fluoride ion. Consequently, the spectroscopic and magnetic behavior of 3 differs significantly compared with 1 and 2. Complexes 1 and 2 exhibit paramagnetic properties typical for a mononuclear S = 5/2 system with weak intermolecular antiferromagnetic interactions at low temperatures, whereas complex 3 demonstrates significant exchange couplings within the chain and weak antiferromagnetic interchain interactions, which stabilize a canted antiferromagnetic state below 4.2 K.
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Affiliation(s)
- Katie L M Harriman
- Department of Chemistry and Biomolecular Science, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Irina A Kühne
- Department of Chemistry and Biomolecular Science, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Alicea A Leitch
- Department of Chemistry and Biomolecular Science, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Science, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Rodolphe Clérac
- CNRS, CRPP , UPR 8641, F-33600 Pessac, France.,Univ. Bordeaux, CRPP , UPR 8641, F-33600 Pessac, France
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Science, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Jaclyn L Brusso
- Department of Chemistry and Biomolecular Science, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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27
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Leclerc MC, Gorelsky SI, Gabidullin BM, Korobkov I, Baker RT. Selective Activation of Fluoroalkenes with N-Heterocyclic Carbenes: Synthesis of N-Heterocyclic Fluoroalkenes and Polyfluoroalkenyl Imidazolium Salts. Chemistry 2016; 22:8063-7. [DOI: 10.1002/chem.201601029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Matthew C. Leclerc
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation; University of Ottawa; 30 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Serge I. Gorelsky
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation; University of Ottawa; 30 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Bulat M. Gabidullin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation; University of Ottawa; 30 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation; University of Ottawa; 30 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - R. Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation; University of Ottawa; 30 Marie Curie Ottawa Ontario K1N 6N5 Canada
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28
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Holmberg RJ, Burns T, Greer SM, Kobera L, Stoian SA, Korobkov I, Hill S, Bryce DL, Woo TK, Murugesu M. Intercalation of Coordinatively Unsaturated Fe(III) Ion within Interpenetrated Metal-Organic Framework MOF-5. Chemistry 2016; 22:7711-5. [PMID: 27061210 DOI: 10.1002/chem.201600566] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Indexed: 11/10/2022]
Abstract
Coordinatively unsaturated Fe(III) metal sites were successfully incorporated into the iconic MOF-5 framework. This new structure, Fe(III) -iMOF-5, is the first example of an interpenetrated MOF linked through intercalated metal ions. Structural characterization was performed with single-crystal and powder XRD, followed by extensive analysis by spectroscopic methods and solid-state NMR, which reveals the paramagnetic ion through its interaction with the framework. EPR and Mössbauer spectroscopy confirmed that the intercalated ions were indeed Fe(III) , whereas DFT calculations were employed to ascertain the unique pentacoordinate architecture around the Fe(III) ion. Interestingly, this is also the first crystallographic evidence of pentacoordinate Zn(II) within the MOF-5 SBU. This new MOF structure displays the potential for metal-site addition as a framework connector, thus creating further opportunity for the innovative development of new MOF materials.
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Affiliation(s)
- Rebecca J Holmberg
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Thomas Burns
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Samuel M Greer
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida, 32306, USA.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA
| | - Libor Kobera
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Sebastian A Stoian
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Stephen Hill
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA.,Department of Physics, Florida State University, Tallahassee, Florida, 32306, USA
| | - David L Bryce
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Tom K Woo
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
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29
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Affiliation(s)
- Van Hung Mai
- Chemistry
Department, Brock University, Niagara Region, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Ilia Korobkov
- X-ray
Core Facility, Faculty of Science, University of Ottawa, 150 Louis
Pasteur, Ottawa, Ontario K1N 6N5, Canada
| | - Georgii I. Nikonov
- Chemistry
Department, Brock University, Niagara Region, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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30
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Barry RA, Deveau J, Korobkov I, Corcoran EC, Scott J. A facile and accurate preparation of pure UMoO6 and a crystallographic study of a Na–U-Mo–O intermediate. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.09.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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McLeod NA, Kuzmina LG, Korobkov I, Howard JAK, Nikonov GI. Hydridosilylamido complexes of Ta and Mo isolobal with Berry's zirconocenes: syntheses, β-Si-H agostic interactions, catalytic hydrosilylation, and insight into mechanism. Dalton Trans 2016; 45:2554-61. [PMID: 26727669 DOI: 10.1039/c5dt04548g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The syntheses of novel Group 5 and Group 6 hydrosilylamido complexes of the type R(ArN[double bond, length as m-dash])M{N((t)Bu)SiMe2-H}X (M = Ta, R = Cp; M = Mo, R = ArN; X = Cl, H, OBn, Me) are described. The various substituents in the X position seem to play the key role in determining the extent of β-agostic interaction with the Si-H bond. The Mo agostic hydrido complex (ArN[double bond, length as m-dash])2Mo{η(3)-N((t)Bu)SiMe2-H}H is a pre-catalyst for the hydrosilylation of carbonyls. The stoichiometric reaction between benzaldehyde and (ArN[double bond, length as m-dash])2Mo{η(3)-N((t)Bu)SiMe2-H}H gives the benzoxy complex (ArN[double bond, length as m-dash])2Mo{N((t)Bu)SiMe2-H}(OBn), which showed a similar catalytic reactivity compared to the parent hydride. Mechanistic studies suggest that a non-hydride mechanism is operative.
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Affiliation(s)
- Nicolas A McLeod
- Chemistry Department, Brock University, Niagara Region, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada.
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32
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Das UK, Daifuku SL, Gorelsky SI, Korobkov I, Neidig ML, Le Roy JJ, Murugesu M, Baker RT. Mononuclear, Dinuclear, and Trinuclear Iron Complexes Featuring a New Monoanionic SNS Thiolate Ligand. Inorg Chem 2016; 55:987-97. [PMID: 26741465 DOI: 10.1021/acs.inorgchem.5b02833] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The new tridentate ligand, S(Me)N(H)S = 2-(2-methylthiophenyl)benzothiazolidine, prepared in a single step from commercial precursors in excellent yield, undergoes ring-opening on treatment with Fe(OTf)2 in the presence of base affording a trinuclear iron complex, [Fe3(μ2-S(Me)NS(-))4](OTf)2 (1) which is fully characterized by structural and spectroscopic methods. X-ray structural data reveal that 1 contains four S(Me)NS(-) ligands meridionally bound to two pseudooctahedral iron centers each bridged by two thiolates to a distorted tetrahedral central iron. The combined spectroscopic (UV-vis, Mössbauer, NMR), magnetic (solution and solid state), and computational (DFT) studies indicate that 1 includes a central, high-spin Fe(II) (S = 2) with two low-spin (S = 0) peripheral Fe(II) centers. Complex 1 reacts with excess PMePh2, CNxylyl (2,6-dimethylphenyl isocyanide), and P(OMe)3 in CH3CN to form diamagnetic, thiolate-bridged, dinuclear Fe(II) complexes {[Fe(μ-S(Me)NS(-))L2]2}(OTf)2 (2-4). These complexes are characterized by elemental analysis; (1)H NMR, IR, UV-vis, and Mössbauer spectroscopy; and single crystal X-ray diffraction. Interestingly, addition of excess P(OMe)3 to complex 1 in CH2Cl2 produces primarily the diamagnetic, mononuclear Fe(II) complex, {Fe(S(Me)NS(-))[P(OMe)3]3}(OTf) (5).
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Affiliation(s)
- Uttam K Das
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Stephanie L Daifuku
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Serge I Gorelsky
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Michael L Neidig
- Department of Chemistry, University of Rochester , Rochester, New York 14627, United States
| | - Jennifer J Le Roy
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - R Tom Baker
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
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33
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Jiang Y, Holmberg RJ, Habib F, Ungur L, Korobkov I, Chibotaru LF, Murugesu M. Probing the structural and magnetic properties of a new family of centrosymmetric dinuclear lanthanide complexes. RSC Adv 2016. [DOI: 10.1039/c6ra12070a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of centrosymmetric dinuclear lanthanide complexes, including GdIII (1), DyIII (2), HoIII (3), ErIII (4) and YbIII (5), have been synthesized and studied for the effects of lanthanide contraction on their magnetic properties.
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Affiliation(s)
- Y. Jiang
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - R. J. Holmberg
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - F. Habib
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - L. Ungur
- Theory of Nanomaterials Group and INPAC Institute for Nanoscale Physics and Chemistry
- Katholieke Universiteit Leuven
- 3001 Leuven
- Belgium
| | - I. Korobkov
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - L. F. Chibotaru
- Theory of Nanomaterials Group and INPAC Institute for Nanoscale Physics and Chemistry
- Katholieke Universiteit Leuven
- 3001 Leuven
- Belgium
| | - M. Murugesu
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
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34
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Paquet C, Lacelle T, Deore B, Kell AJ, Liu X, Korobkov I, Malenfant PRL. Pyridine–copper(ii) formates for the generation of high conductivity copper films at low temperatures. Chem Commun (Camb) 2016; 52:2605-8. [PMID: 26750775 DOI: 10.1039/c5cc07737k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyridine derivatives coordinated to copper(ii) formates are shown to have lower decomposition temperatures than the alkylamine analogues.
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Affiliation(s)
- C. Paquet
- Security and Disruptive Technologies
- National Research Council Canada
- Ottawa
- Canada
| | - T. Lacelle
- Security and Disruptive Technologies
- National Research Council Canada
- Ottawa
- Canada
| | - B. Deore
- Security and Disruptive Technologies
- National Research Council Canada
- Ottawa
- Canada
| | - A. J. Kell
- Security and Disruptive Technologies
- National Research Council Canada
- Ottawa
- Canada
| | - X. Liu
- Security and Disruptive Technologies
- National Research Council Canada
- Ottawa
- Canada
| | - I. Korobkov
- X-ray Core Facility
- Faculty of Science
- University of Ottawa
- Ottawa
- Canada
| | - P. R. L. Malenfant
- Security and Disruptive Technologies
- National Research Council Canada
- Ottawa
- Canada
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35
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Jurca T, Ouanounou S, Shih WC, Ong TG, Yap GPA, Korobkov I, Gorelsky S, Richeson D. Structural and electronic trends for five coordinate 1st row transition metal complexes: Mn(ii) to Zn(ii) captured in a bis(iminopyridine) framework. Dalton Trans 2016; 45:14327-34. [DOI: 10.1039/c6dt02598f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of divalent bis(iminopyridine) complexes {2,6-[PhCN(tBu2C6H3)]2C5H3N}MBr2 provided a unique system for investigating the correlation of experimental structure and electronic structure analysis.
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Affiliation(s)
- Titel Jurca
- Department of Chemistry and Biomolecular Sciences
- Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Sarah Ouanounou
- Department of Chemistry and Biomolecular Sciences
- Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | | | - Tiow-Gan Ong
- Institute of Chemistry
- Academia Sinica
- Taipei
- Taiwan
| | - Glenn P. A. Yap
- Department of Chemistry & Biochemistry
- 236 Brown Laboratory
- University of Delaware
- Newark
- USA
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences
- Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Serge Gorelsky
- Department of Chemistry and Biomolecular Sciences
- Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
| | - Darrin Richeson
- Department of Chemistry and Biomolecular Sciences
- Center for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- Canada
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36
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Mai VH, Kuzmina LG, Churakov AV, Korobkov I, Howard JAK, Nikonov GI. NHC carbene supported half-sandwich hydridosilyl complexes of ruthenium: the impact of supporting ligands on Si⋯H interligand interactions. Dalton Trans 2016; 45:208-15. [DOI: 10.1039/c5dt04067a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Electron donating NHC carbene ligand IPr exerts stronger RuH⋯Si interactions in complexes Cp(IPr)RuH2(SiR3) than in related iPr3P complexes Cp(iPr3P)RuH2(SiR3).
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Affiliation(s)
- Van Hung Mai
- Department of Chemistry
- Brock University
- 1812 Sir Isaac Brock Way
- Canada
| | | | | | - Ilia Korobkov
- X-Ray Core Facility
- Faculty of Science
- University of Ottawa
- Ottawa
- Canada K1N 6N5
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37
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Abstract
Extending molecular systems into chain networks is a unique method with which to orient magnetic molecules into well-ordered arrays along one dimension, and study their resulting properties.
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Affiliation(s)
- Rebecca J. Holmberg
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
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38
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Jiang Y, Brunet G, Holmberg RJ, Habib F, Korobkov I, Murugesu M. Terminal solvent effects on the anisotropy barriers of Dy2 systems. Dalton Trans 2016; 45:16709-16715. [DOI: 10.1039/c6dt03366k] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of three dinuclear dysprosium complexes, all of which exhibit single-molecule magnet behaviour under zero applied dc fields, have exemplified that terminally bonded solvent molecules can drastically impact slow magnetic relaxation properties.
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Affiliation(s)
- Y. Jiang
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - G. Brunet
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - R. J. Holmberg
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - F. Habib
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - I. Korobkov
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
| | - M. Murugesu
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada K1N 6N5
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39
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Jurca T, Ramadan O, Korobkov I, Richeson DS. Employing sterically encumbered bis(imino)pyridine ligands in support of fac-rhenium(I) carbonyls. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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40
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Abstract
S-Alkyl-1,2,4,6-thiatriazines, which can be preparedviatwo pathways, are described. The regioselectivity and photophysical properties are rationalized through computational studies.
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Affiliation(s)
- Elizabeth Kleisath
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
- Centre for Catalysis Research and Innovation
| | - Nathan J. Yutronkie
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
- Centre for Catalysis Research and Innovation
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - Bulat M. Gabidullin
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
| | - Jaclyn L. Brusso
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- Canada
- Centre for Catalysis Research and Innovation
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41
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Yutronkie NJ, Kühne IA, Korobkov I, Brusso JL, Murugesu M. Connecting mononuclear dysprosium single-molecule magnets to form dinuclear complexes via in situ ligand oxidation. Chem Commun (Camb) 2016; 52:677-80. [DOI: 10.1039/c5cc07629c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Dy2 complex, exhibiting SMM behaviour, and its Y analogue were prepared via in situ oxidation of Py2TTA, a pincer type ligand, followed by dimerisation.
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Affiliation(s)
- Nathan J. Yutronkie
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- ON K1N 6N5 Canada
| | - Irina A. Kühne
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- ON K1N 6N5 Canada
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- ON K1N 6N5 Canada
| | - Jaclyn L. Brusso
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- ON K1N 6N5 Canada
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences
- University of Ottawa
- Ottawa
- ON K1N 6N5 Canada
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42
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Chu T, Belding L, Poddutoori PK, van der Est A, Dudding T, Korobkov I, Nikonov GI. Unique molecular geometries of reduced 4- and 5-coordinate zinc complexes stabilised by diiminopyridine ligand. Dalton Trans 2016; 45:13440-8. [DOI: 10.1039/c6dt02001a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stepwise reduction of the diiminopyridine complex dimpyrZnCl2 by KC8 leads to compounds dimpyrZnCl (2), dimpyrZnCl(DMAP) (3) and dimpyrZn(DMAP)2 (4) having unusual square-planar and see-saw geometries.
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Affiliation(s)
- Terry Chu
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | - Lee Belding
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | | | - Art van der Est
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | - Travis Dudding
- Department of Chemistry
- Brock University
- St Catharines
- Canada L2S 3A1
| | - Ilia Korobkov
- X-Ray Core Facility
- Faculty of Science
- University of Ottawa
- Ottawa
- Canada K1N 6N5
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43
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Leclerc MC, Bayne JM, Lee GM, Gorelsky SI, Vasiliu M, Korobkov I, Harrison DJ, Dixon DA, Baker RT. Perfluoroalkyl Cobalt(III) Fluoride and Bis(perfluoroalkyl) Complexes: Catalytic Fluorination and Selective Difluorocarbene Formation. J Am Chem Soc 2015; 137:16064-73. [DOI: 10.1021/jacs.5b12003] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthew C. Leclerc
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Julia M. Bayne
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Graham M. Lee
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Serge I. Gorelsky
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Monica Vasiliu
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Ilia Korobkov
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Daniel J. Harrison
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - David A. Dixon
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - R. Tom Baker
- Department
of Chemistry and Biomolecular Sciences and Centre for Catalysis Research
and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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44
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Giffin KA, Korobkov I, Baker RT. Brønsted acid-promoted C-F bond activation in [P,S]-ligated neutral and anionic perfluoronickelacyclopentanes. Dalton Trans 2015; 44:19587-96. [PMID: 26400239 DOI: 10.1039/c5dt02912k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of L2Ni(CF2)44a-c (L = PPh3, PPh2Me, pyridine) with an external Lewis acid (trimethylsilyl triflate) gives new L-functionalized fluoronickelacyclopentanes 5a-c. Complexes L2Ni(CF2)44a,b react with the thiol form of the bidentate ligand 1,2,4-(HS)(Ph2P)Me(C6H3) [P,SH] through a unique Brønsted acid-promoted Cα-F bond activation mechanism, affording phosphine-functionalized nickelacycles bearing a phosphinothiolate ligand 6a-b. Furthermore, substituting monodentate ligands in L2Ni(CF2)44a-c with the deprotonated form of the bidentate ligand [P,S(-)] leads to the first anionic perfluoronickelacycle 7. The anionic metallacyle reacts with phosphonium salts [PHPh3](Br) and [PHPh2Me](Br) to yield HF and phosphine-functionalized nickelacycles 6a,b that still contain the terminal thiolate moiety.
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Affiliation(s)
- Kaitie A Giffin
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada.
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45
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Abstract
A series of monovalent group 11 complexes, [2,6-{Ph2PNMe}2(NC5H3)]CuBr 1, [2,6-{Ph2PNMe}2(NC5H3)]CuOTf 2, [2,6-{Ph2PNMe}2(NC5H3)]AgOTf 3, and [2,6-{Ph2PNMe}2(NC5H3)](AuCl)24, supported by a neutral PN(3)P ligand have been synthesized and characterized by multinuclear NMR and single crystal X-ray diffraction studies. The variation of the coordination properties were analyzed and electronic structure calculations have been carried out to provide insight on the bonding details in these complexes. The Cu(I) complexes displayed an unusual coordination geometry with a tridentate pincer ligand and an overall four coordinate trigonal pyramidal geometry. In contrast the Ag(I) analogue displayed a bidentate κ(2)-P,P' ligation leaving the pyridyl-N atom uncoordinated and yielding a pyramidalized trigonal planar geometry around Ag. The bimetallic Au(I) complex completed the series and displayed a monodentate P-bonded ligand and a linear coordination geometry.
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Affiliation(s)
- Gyandshwar Kumar Rao
- Center for Catalysis Research and Innovation and Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
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46
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Affiliation(s)
- Daniel J. Harrison
- Department
of Chemistry and
Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Alex L. Daniels
- Department
of Chemistry and
Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry and
Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - R. Tom Baker
- Department
of Chemistry and
Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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47
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Affiliation(s)
- Terry Chu
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
| | - Yaroslav Boyko
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
| | - Ilia Korobkov
- X-ray
Core Facility, Faculty of Science, University of Ottawa, 150 Louis
Pasteur, Ottawa, Ontario, Canada K1N 6N5
| | - Georgii I. Nikonov
- Department
of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
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48
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Andrella NO, Sicard AJ, Gorelsky SI, Korobkov I, Baker RT. A T-shaped Ni[κ 2-(CF 2) 4-] NHC complex: unusual C sp3 -F and M-C F bond functionalization reactions. Chem Sci 2015; 6:6392-6397. [PMID: 30090259 PMCID: PMC6054117 DOI: 10.1039/c5sc01886b] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 07/27/2015] [Indexed: 11/21/2022] Open
Abstract
The reactivity of this T-shaped perfluoronickelacyclopentane–NHC complex with Lewis- and Brønsted acids is enhanced vs. 4-coordinate variants by its low coordination number.
A T-shaped octafluoronickelacyclopentane–NHC complex is prepared and characterized. While the solid-state structure includes a weak isopropyl-CH3 agostic interaction, the reactivity of this complex with Lewis- and Brønsted acids is clearly enhanced by its low coordination number. Reaction with Me3SiOTf, for example, yielded a rare metal–heptafluorocyclobutyl complex whereas carboxylic acids gave substitution at the α-carbon and/or Ni–CF bond protonolysis to afford thermally robust 4H-octafluorobutyl Ni complexes.
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Affiliation(s)
- Nicholas O Andrella
- Department of Chemistry and Centre for Catalysis Research and Innovation(CCRI) , University of Ottawa , 30 Marie Curie , Ottawa , ON K1N 6N5 Canada
| | - Alexandre J Sicard
- Department of Chemistry and Centre for Catalysis Research and Innovation(CCRI) , University of Ottawa , 30 Marie Curie , Ottawa , ON K1N 6N5 Canada
| | - Serge I Gorelsky
- Department of Chemistry and Centre for Catalysis Research and Innovation(CCRI) , University of Ottawa , 30 Marie Curie , Ottawa , ON K1N 6N5 Canada
| | - Ilia Korobkov
- Department of Chemistry and Centre for Catalysis Research and Innovation(CCRI) , University of Ottawa , 30 Marie Curie , Ottawa , ON K1N 6N5 Canada
| | - R Tom Baker
- Department of Chemistry and Centre for Catalysis Research and Innovation(CCRI) , University of Ottawa , 30 Marie Curie , Ottawa , ON K1N 6N5 Canada
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49
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Harrison DJ, Daniels AL, Korobkov I, Baker RT. Tetracarbonyl(trifluoromethyl)cobalt(I) [Co(CO)4(CF3)] as a Precursor to New Cobalt Trifluoromethyl and Difluorocarbene Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00674] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel J. Harrison
- Department
of Chemistry, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Alex L. Daniels
- Department
of Chemistry, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - R. Tom Baker
- Department
of Chemistry, University of Ottawa, 30 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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50
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Brunet G, Habib F, Korobkov I, Murugesu M. Slow Magnetic Relaxation Observed in Dysprosium Compounds Containing Unsupported Near-Linear Hydroxo- and Fluoro-Bridges. Inorg Chem 2015; 54:6195-202. [DOI: 10.1021/acs.inorgchem.5b00343] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriel Brunet
- Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Fatemah Habib
- Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Muralee Murugesu
- Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, Ontario K1N 6N5, Canada
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