Steric tuning of OH-functionalised N,N-manganese(I) complexes for the transfer hydrogenation of carbonyl compounds.
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| Title: | Steric tuning of OH-functionalised N,N-manganese(I) complexes for the transfer hydrogenation of carbonyl compounds. |
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| Authors: | Prettyman, Samuel J.1 (AUTHOR), Alqahtani, Saad2 (AUTHOR), Alhalafi, Mona H.1,3 (AUTHOR), Singh, Kuldip1 (AUTHOR), Solan, Gregory A.1 (AUTHOR) gas8@leicester.ac.uk |
| Source: | Dalton Transactions: An International Journal of Inorganic Chemistry. 5/19/2026, Vol. 55 Issue 19, p7612-7623. 12p. |
| Subjects: | Transfer hydrogenation, Steric hindrance, Acetophenone derivatives, Catalysis, Manganese compounds, Ligands (Chemistry), Density functional theory, Carbonyl compounds |
| Abstract: | A new family of manganese(I) carbonyl complexes, [2-OH-6-{CMeN(2,6-R12-4-R2C6H2)}C5H3N]MnBr(CO)3 (R1 = iPr, R2 = H Mn1a , R1 = iPr, R2 = Br Mn1b , R1 = H, R2 = iPr Mn1d , R1 = H, R2 = Me Mn1e), bearing 6-(arylimino)pyridine N,N-chelating ligands that are appended with a 2-hydroxyl group, have been synthesised and evaluated as catalysts in the transfer hydrogenation (TH) of acetophenone and its derivatives. This set of complexes, differing in their steric and electronic properties of their N-aryl groups, reveal distinct catalytic performances with the least sterically hindered N-4-isopropylphenyl derivative, Mn1d , the most active allowing TON's of up to 1030. Moreover, Mn1d proved highly effective for an assortment of aryl-methyl ketones with the steric/electronic profile of the substrate having an observable effect on conversion. Mechanistic studies involving DFT calculations point towards an outer-sphere mechanism that is distinctly affected by the steric properties of the N-aryl groups of the manganese catalyst. [ABSTRACT FROM AUTHOR] |
| Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193859986 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Steric tuning of OH-functionalised N,N-manganese(I) complexes for the transfer hydrogenation of carbonyl compounds. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Prettyman%2C+Samuel+J%2E%22">Prettyman, Samuel J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alqahtani%2C+Saad%22">Alqahtani, Saad</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alhalafi%2C+Mona+H%2E%22">Alhalafi, Mona H.</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Singh%2C+Kuldip%22">Singh, Kuldip</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Solan%2C+Gregory+A%2E%22">Solan, Gregory A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gas8@leicester.ac.uk</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Dalton+Transactions%3A+An+International+Journal+of+Inorganic+Chemistry%22">Dalton Transactions: An International Journal of Inorganic Chemistry</searchLink>. 5/19/2026, Vol. 55 Issue 19, p7612-7623. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Transfer+hydrogenation%22">Transfer hydrogenation</searchLink><br /><searchLink fieldCode="DE" term="%22Steric+hindrance%22">Steric hindrance</searchLink><br /><searchLink fieldCode="DE" term="%22Acetophenone+derivatives%22">Acetophenone derivatives</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysis%22">Catalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Manganese+compounds%22">Manganese compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Ligands+%28Chemistry%29%22">Ligands (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Density+functional+theory%22">Density functional theory</searchLink><br /><searchLink fieldCode="DE" term="%22Carbonyl+compounds%22">Carbonyl compounds</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A new family of manganese(I) carbonyl complexes, [2-OH-6-{CMeN(2,6-R12-4-R2C6H2)}C5H3N]MnBr(CO)3 (R1 = iPr, R2 = H Mn1a , R1 = iPr, R2 = Br Mn1b , R1 = H, R2 = iPr Mn1d , R1 = H, R2 = Me Mn1e), bearing 6-(arylimino)pyridine N,N-chelating ligands that are appended with a 2-hydroxyl group, have been synthesised and evaluated as catalysts in the transfer hydrogenation (TH) of acetophenone and its derivatives. This set of complexes, differing in their steric and electronic properties of their N-aryl groups, reveal distinct catalytic performances with the least sterically hindered N-4-isopropylphenyl derivative, Mn1d , the most active allowing TON's of up to 1030. Moreover, Mn1d proved highly effective for an assortment of aryl-methyl ketones with the steric/electronic profile of the substrate having an observable effect on conversion. Mechanistic studies involving DFT calculations point towards an outer-sphere mechanism that is distinctly affected by the steric properties of the N-aryl groups of the manganese catalyst. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1039/d6dt00709k Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 7612 Subjects: – SubjectFull: Transfer hydrogenation Type: general – SubjectFull: Steric hindrance Type: general – SubjectFull: Acetophenone derivatives Type: general – SubjectFull: Catalysis Type: general – SubjectFull: Manganese compounds Type: general – SubjectFull: Ligands (Chemistry) Type: general – SubjectFull: Density functional theory Type: general – SubjectFull: Carbonyl compounds Type: general Titles: – TitleFull: Steric tuning of OH-functionalised N,N-manganese(I) complexes for the transfer hydrogenation of carbonyl compounds. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Prettyman, Samuel J. – PersonEntity: Name: NameFull: Alqahtani, Saad – PersonEntity: Name: NameFull: Alhalafi, Mona H. – PersonEntity: Name: NameFull: Singh, Kuldip – PersonEntity: Name: NameFull: Solan, Gregory A. IsPartOfRelationships: – BibEntity: Dates: – D: 19 M: 05 Text: 5/19/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 14779226 Numbering: – Type: volume Value: 55 – Type: issue Value: 19 Titles: – TitleFull: Dalton Transactions: An International Journal of Inorganic Chemistry Type: main |
| ResultId | 1 |
