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4,5-Diazafluorene and 9,9’-Dimethyl-4,5-Diazafluorene as Ligands Supporting Redox-Active Mn and Ru Complexes
dc.contributor.author | Henke, Wade C. | |
dc.contributor.author | Hopkins, Julie A. | |
dc.contributor.author | Anderson, Micah L. | |
dc.contributor.author | Stiel, Jonah P. | |
dc.contributor.author | Day, Victor W. | |
dc.contributor.author | Blakemore, James D. | |
dc.date.accessioned | 2020-11-11T15:14:46Z | |
dc.date.available | 2020-11-11T15:14:46Z | |
dc.date.issued | 2020-07-13 | |
dc.identifier.citation | Henke, W. C., Hopkins, J. A., Anderson, M. L., Stiel, J. P., Day, V. W., & Blakemore, J. D. (2020). 4,5-Diazafluorene and 9,9'-Dimethyl-4,5-Diazafluorene as Ligands Supporting Redox-Active Mn and Ru Complexes. Molecules (Basel, Switzerland), 25(14), 3189. https://doi.org/10.3390/molecules25143189 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/30830 | |
dc.description | This work is licensed under a Creative Commons Attribution 4.0 International License. | en_US |
dc.description.abstract | 4,5-diazafluorene (daf) and 9,9’-dimethyl-4,5-diazafluorene (Me2daf) are structurally similar to the important ligand 2,2’-bipyridine (bpy), but significantly less is known about the redox and spectroscopic properties of metal complexes containing Me2daf as a ligand than those containing bpy. New complexes Mn(CO)3Br(daf) (2), Mn(CO)3Br(Me2daf) (3), and [Ru(Me2daf)3](PF6)2 (5) have been prepared and fully characterized to understand the influence of the Me2daf framework on their chemical and electrochemical properties. Structural data for 2, 3, and 5 from single-crystal X-ray diffraction analysis reveal a distinctive widening of the daf and Me2daf chelate angles in comparison to the analogous Mn(CO)3(bpy)Br (1) and [Ru(bpy)3]2+ (4) complexes. Electronic absorption data for these complexes confirm the electronic similarity of daf, Me2daf, and bpy, as spectra are dominated in each case by metal-to-ligand charge transfer bands in the visible region. However, the electrochemical properties of 2, 3, and 5 reveal that the redox-active Me2daf framework in 3 and 5 undergoes reduction at a slightly more negative potential than that of bpy in 1 and 4. Taken together, the results indicate that Me2daf could be useful for preparation of a variety of new redox-active compounds, as it retains the useful redox-active nature of bpy but lacks the acidic, benzylic C–H bonds that can induce secondary reactivity in complexes bearing daf. | en_US |
dc.description.sponsorship | US National Science Foundation (OIA-1833087) | en_US |
dc.description.sponsorship | NSF REU Program in Chemistry at the University of Kansas (CHE-1560279) | en_US |
dc.description.sponsorship | NIH T32 GM008545-25 | en_US |
dc.description.sponsorship | NIH S10OD016360 | en_US |
dc.description.sponsorship | NIH S10RR024664 | en_US |
dc.description.sponsorship | CHE-1625923 | en_US |
dc.publisher | MDPI | en_US |
dc.rights | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.subject | Manganese tricarbonyl | en_US |
dc.subject | Ruthenium | en_US |
dc.subject | Electrochemistry | en_US |
dc.subject | 4,5-diazafluorene | en_US |
dc.subject | 9,9’-dimethyl-4,5-diazafluorene | en_US |
dc.title | 4,5-Diazafluorene and 9,9’-Dimethyl-4,5-Diazafluorene as Ligands Supporting Redox-Active Mn and Ru Complexes | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Henke, Wade C. | |
kusw.kuauthor | Hopkins, Julie A. | |
kusw.kuauthor | Anderson, Micah L. | |
kusw.kuauthor | Stiel, Jonah P. | |
kusw.kuauthor | Day, Victor W. | |
kusw.kuauthor | Blakemore, James D. | |
kusw.kudepartment | Chemistry | en_US |
dc.identifier.doi | 10.3390/molecules25143189 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-4172-7460 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.identifier.pmid | PMC7396985 | en_US |
dc.rights.accessrights | openAccess | en_US |