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Yang M, Su M. Mechanistic Insight into Chemical Reactions of Acyclic Diboryloxy Carbenes: the Activation Strain Model Study. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ming‐Chung Yang
- Department of Applied Chemistry National Chiayi University Chiayi 60004 Taiwan
| | - Ming‐Der Su
- Department of Applied Chemistry National Chiayi University Chiayi 60004 Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 80708 Taiwan
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Duffy IR, Leigh WJ. Direct Detection, Dimerization, and Chemical Trapping of Dimethyl- and Diphenylstannylene from Photolysis of Stannacyclopent-3-enes in Solution. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00615] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ian R. Duffy
- Department of Chemistry and
Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
| | - William J. Leigh
- Department of Chemistry and
Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1
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Kostina SS, Leigh WJ. A combined kinetic and computational study of the reactions of transient germylenes with oxiranes and thiiranes in solution. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The reactions of dimethyl- and diphenylgermylene (GeMe2 and GePh2, respectively) with cyclohexene oxide (CHO) and propylene sulfide (PrS) have been studied in hydrocarbon solvents at 25 °C by laser flash and steady-state photolysis methods using appropriately substituted germacyclopent-3-ene derivatives as germylene precursors. GeMe2 reacts with CHO and PrS with rate constants in the range of 1.2–1.7 × 1010 M−1 s−1 in hexanes at 25 °C to form new transient products that are assigned to the corresponding Lewis acid-base complexes of the germylene with the substrates. The complexation reactions were found to be reversible and are characterized by equilibrium constants of KC = (3.7 ± 0.8) × 103 M−1 and (3 ± 1) × 104 M−1 for complexation of GeMe2 with CHO and PrS, respectively. The complexes decay over approximately 10 μs with the concomitant formation of tetramethyldigermene (Ge2Me4), identifiable by its characteristic UV-vis spectrum centered at λmax = 370 nm. Diphenylgermylene behaves analogously, reacting rapidly and reversibly with the two substrates to form the corresponding Lewis acid-base complexes (λmax ≈ 355 nm) that decay over several tens of microseconds with the concomitant growth of the characteristic UV-vis spectrum of tetraphenyldigermene (Ge2Ph4) (λmax = 440 nm). Steady-state photolysis of the germylene precursors in the presence of CHO afforded germanium-containing oligomers but showed no evidence of oxygen abstraction or the formation of substrate-derived product(s). Similar photolyses in the presence of PrS also afforded germanium-containing oligomers, but as well yielded propene in 20%–30% yield and (in the case of the GePh2 precursor) minor amounts of low molecular weight compounds that appear to be derived from the corresponding germanethione. Density functional theory calculations of the chalcogen abstraction reactions of GeMe2 with oxirane and thiirane in the gas phase have been carried out at the B3LYP/6-311+G(d,p) level of theory and are in good qualitative agreement with the experimental data.
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Affiliation(s)
- Svetlana S. Kostina
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
| | - William J. Leigh
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
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Li MC, Su MD. The addition reactions between N-heterocyclic carbenes and fullerenes (C60 and C70): a density functional study. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1629-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Affiliation(s)
- Michio Yamada
- Department of Chemistry, Tokyo Gakugei University , Koganei, Tokyo 184-8501, Japan
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Wang GW, Wu P, Yang HT. Reaction of [60]fullerene with trans-epoxides: a theoretical study. Org Biomol Chem 2009; 7:1851-7. [DOI: 10.1039/b818965j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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