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Tresp DS, Neugebauer H, Grimme S, Hansen A, Prokopchuk DE. Electronic Effects of Aminoindenyl Ligands Coordinated to Manganese: Structures and Properties of a Mn 0 Metalloradical and Bimetallic Mn –I/Mn I Adduct. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David S. Tresp
- Department of Chemistry, Rutgers University−Newark, Newark, New Jersey 07102, United States
| | - Hagen Neugebauer
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Andreas Hansen
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Demyan E. Prokopchuk
- Department of Chemistry, Rutgers University−Newark, Newark, New Jersey 07102, United States
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Laws DR, Sheats J, Rheingold AL, Geiger WE. Organometallic electrodes: modification of electrode surfaces through cathodic reduction of cyclopentadienyldiazonium complexes of cobalt and manganese. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:15010-21. [PMID: 20726537 DOI: 10.1021/la102579t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Two organometallic complexes having cyclopentadienyldiazonium ligands have been isolated and characterized by spectroscopy, X-ray crystallography, and electrochemistry. Both CoCp(η(5)-C(5)H(4)N(2))(2+) (2(2+)) and Mn(CO)(3)(η(5)-C(5)H(4)N(2))(+) (3(+)) undergo facile cyclopentadienyldiazonium ligand-based one-electron reductions which liberate dinitrogen and result in strong binding of the cyclopentadienyl ligand to a glassy carbon surface, similar to the processes well established for organic aryldiazonium salts. The organometallic-modified electrodes are robust and have a thickness of approximately one monolayer (Γ = (2-4) × 10(-10) mol cm(-2)). Their voltammetric responses are as expected for a cobaltocenium-modified electrode, [CoCp(η(5)-C(5)H(4)-E)](+), where Cp = cyclopentadienyl and E = electrode, and a "cymantrene"-modified electrode Mn(CO)(3)(η(5)-C(5)H(4)-E). The cobaltocenium electrode has two cathodic surface waves. The first (E(1/2) = -1.34 V vs ferrocene) is highly reversible, whereas the second (E(pc) = -2.4 V) is not, consistent with the known behavior of cobaltocenium. The cymantrene-substituted electrode has a partially chemically reversible anodic wave at E(1/2) = 0.96 V, also consistent with the behavior of its Mn(CO)(3)Cp parent. Many of the properties of aryl-modified electrodes, such as "blockage" of the voltammetric responses of test analytes, are also seen for the organometallic-modified electrodes. Surface-based substitution of a carbonyl group by a phosphite ligand, P(OR)(3), R = Ph or Me, was observed when the cymantrene-modified electrode was anodically oxidized in the presence of a phosphite ligand. The successful grafting of organometallic moieties by direct bonding of a cyclopentadienyl ligand to electrode surfaces expands the chemical and electrochemical dimensions of diazonium-based modified electrodes.
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Affiliation(s)
- Derek R Laws
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, USA
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Nafady A, Butterick R, Calhorda MJ, Carroll PJ, Chong D, Geiger WE, Sneddon LG. Hyperelectronic Metal−Carborane Analogues of Cymantrene (MnCp(CO)3) Anions: Electronic and Structural Noninnocence of the Tricarbadecaboranyl Ligand. Organometallics 2007. [DOI: 10.1021/om700496v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ayman Nafady
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Robert Butterick
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Maria José Calhorda
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Patrick J. Carroll
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Daesung Chong
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - William E. Geiger
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Larry G. Sneddon
- Department of Chemistry, University of Vermont, Burlington Vermont 05405, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
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