TY  - JOUR
AU  - Steen, Jorn D.
AU  - Stepanović, Stepan
AU  - Parvizian, Mahsa
AU  - de Boer, Johannes W.
AU  - Hage, Ronald
AU  - Chen, Juan
AU  - Swart, Marcel
AU  - Gruden-Pavlović, Maja
AU  - Browne, Wesley R.
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3691
AB  - Lewis acid (LA) activation by coordination to metal oxido species has emerged as a new strategy in catalytic oxidations. Despite the many reports of enhancement of performance in oxidation catalysis, direct evidence for LA-catalyst interactions under catalytically relevant conditions is lacking. Here, we show, using the oxidation of alkenes with H2O2 and the catalyst [Mn2(μ-O)3(tmtacn)2](PF6)2 (1), that Lewis acids commonly used to enhance catalytic activity, e.g., Sc(OTf)3, in fact undergo hydrolysis with adventitious water to release a strong Brønsted acid. The formation of Brønsted acids in situ is demonstrated using a combination of resonance Raman, UV/vis absorption spectroscopy, cyclic voltammetry, isotope labeling, and DFT calculations. The involvement of Brønsted acids in LA enhanced systems shown here holds implications for the conclusions reached in regard to the relevance of direct LA-metal oxido interactions under catalytic conditions.
PB  - American Chemical Society
T2  - Inorganic Chemistry
T1  - Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation
VL  - 58
IS  - 21
SP  - 14924
EP  - 14930
DO  - 10.1021/acs.inorgchem.9b02737
ER  - 

@article{
author = "Steen, Jorn D. and Stepanović, Stepan and Parvizian, Mahsa and de Boer, Johannes W. and Hage, Ronald and Chen, Juan and Swart, Marcel and Gruden-Pavlović, Maja and Browne, Wesley R.",
year = "2019",
abstract = "Lewis acid (LA) activation by coordination to metal oxido species has emerged as a new strategy in catalytic oxidations. Despite the many reports of enhancement of performance in oxidation catalysis, direct evidence for LA-catalyst interactions under catalytically relevant conditions is lacking. Here, we show, using the oxidation of alkenes with H2O2 and the catalyst [Mn2(μ-O)3(tmtacn)2](PF6)2 (1), that Lewis acids commonly used to enhance catalytic activity, e.g., Sc(OTf)3, in fact undergo hydrolysis with adventitious water to release a strong Brønsted acid. The formation of Brønsted acids in situ is demonstrated using a combination of resonance Raman, UV/vis absorption spectroscopy, cyclic voltammetry, isotope labeling, and DFT calculations. The involvement of Brønsted acids in LA enhanced systems shown here holds implications for the conclusions reached in regard to the relevance of direct LA-metal oxido interactions under catalytic conditions.",
publisher = "American Chemical Society",
journal = "Inorganic Chemistry",
title = "Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation",
volume = "58",
number = "21",
pages = "14924-14930",
doi = "10.1021/acs.inorgchem.9b02737"
}

Steen, J. D., Stepanović, S., Parvizian, M., de Boer, J. W., Hage, R., Chen, J., Swart, M., Gruden-Pavlović, M.,& Browne, W. R.. (2019). Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. in Inorganic Chemistry
American Chemical Society., 58(21), 14924-14930.
https://doi.org/10.1021/acs.inorgchem.9b02737

Steen JD, Stepanović S, Parvizian M, de Boer JW, Hage R, Chen J, Swart M, Gruden-Pavlović M, Browne WR. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. in Inorganic Chemistry. 2019;58(21):14924-14930.
doi:10.1021/acs.inorgchem.9b02737 .

Steen, Jorn D., Stepanović, Stepan, Parvizian, Mahsa, de Boer, Johannes W., Hage, Ronald, Chen, Juan, Swart, Marcel, Gruden-Pavlović, Maja, Browne, Wesley R., "Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation" in Inorganic Chemistry, 58, no. 21 (2019):14924-14930,
https://doi.org/10.1021/acs.inorgchem.9b02737 . .

TY  - DATA
AU  - Steen, Jorn D.
AU  - Stepanović, Stepan
AU  - Parvizian, Mahsa
AU  - de Boer, Johannes W.
AU  - Hage, Ronald
AU  - Chen, Juan
AU  - Swart, Marcel
AU  - Gruden-Pavlović, Maja
AU  - Browne, Wesley R.
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3692
PB  - American Chemical Society
T2  - Inorganic Chemistry
T1  - Supplementary data for the article: Steen, J. D.; Stepanovic, S.; Parvizian, M.; De Boer, J. W.; Hage, R.; Chen, J.; Swart, M.; Gruden, M.; Browne, W. R. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. Inorganic Chemistry 2019, 58 (21), 14924–14930. https://doi.org/10.1021/acs.inorgchem.9b02737
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3692
ER  - 

@misc{
author = "Steen, Jorn D. and Stepanović, Stepan and Parvizian, Mahsa and de Boer, Johannes W. and Hage, Ronald and Chen, Juan and Swart, Marcel and Gruden-Pavlović, Maja and Browne, Wesley R.",
year = "2019",
publisher = "American Chemical Society",
journal = "Inorganic Chemistry",
title = "Supplementary data for the article: Steen, J. D.; Stepanovic, S.; Parvizian, M.; De Boer, J. W.; Hage, R.; Chen, J.; Swart, M.; Gruden, M.; Browne, W. R. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. Inorganic Chemistry 2019, 58 (21), 14924–14930. https://doi.org/10.1021/acs.inorgchem.9b02737",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3692"
}

Steen, J. D., Stepanović, S., Parvizian, M., de Boer, J. W., Hage, R., Chen, J., Swart, M., Gruden-Pavlović, M.,& Browne, W. R.. (2019). Supplementary data for the article: Steen, J. D.; Stepanovic, S.; Parvizian, M.; De Boer, J. W.; Hage, R.; Chen, J.; Swart, M.; Gruden, M.; Browne, W. R. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. Inorganic Chemistry 2019, 58 (21), 14924–14930. https://doi.org/10.1021/acs.inorgchem.9b02737. in Inorganic Chemistry
American Chemical Society..
https://hdl.handle.net/21.15107/rcub_cherry_3692

Steen JD, Stepanović S, Parvizian M, de Boer JW, Hage R, Chen J, Swart M, Gruden-Pavlović M, Browne WR. Supplementary data for the article: Steen, J. D.; Stepanovic, S.; Parvizian, M.; De Boer, J. W.; Hage, R.; Chen, J.; Swart, M.; Gruden, M.; Browne, W. R. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. Inorganic Chemistry 2019, 58 (21), 14924–14930. https://doi.org/10.1021/acs.inorgchem.9b02737. in Inorganic Chemistry. 2019;.
https://hdl.handle.net/21.15107/rcub_cherry_3692 .

Steen, Jorn D., Stepanović, Stepan, Parvizian, Mahsa, de Boer, Johannes W., Hage, Ronald, Chen, Juan, Swart, Marcel, Gruden-Pavlović, Maja, Browne, Wesley R., "Supplementary data for the article: Steen, J. D.; Stepanovic, S.; Parvizian, M.; De Boer, J. W.; Hage, R.; Chen, J.; Swart, M.; Gruden, M.; Browne, W. R. Lewis versus Brønsted Acid Activation of a Mn(IV) Catalyst for Alkene Oxidation. Inorganic Chemistry 2019, 58 (21), 14924–14930. https://doi.org/10.1021/acs.inorgchem.9b02737" in Inorganic Chemistry (2019),
https://hdl.handle.net/21.15107/rcub_cherry_3692 .