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Ehret F, Filippou V, Blickle S, Bubrin M, Záliš S, Kaim W. Structural and Oxidation State Alternatives in Platinum and Palladium Complexes of a Redox-Active Amidinato Ligand. Chemistry 2021; 27:3374-3381. [PMID: 32959415 PMCID: PMC7986709 DOI: 10.1002/chem.202003636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Indexed: 11/07/2022]
Abstract
Reaction of [Pt(DMSO)2 Cl2 ] or [Pd(MeCN)2 Cl2 ] with the electron-rich LH=N,N'-bis(4-dimethylaminophenyl)ethanimidamide yielded mononuclear [PtL2 ] (1) but dinuclear [Pd2 L4 ] (2), a paddle-wheel complex. The neutral compounds were characterized through experiments (crystal structures, electrochemistry, UV-vis-NIR spectroscopy, magnetic resonance) and TD-DFT calculations as metal(II) species with noninnocent ligands L- . The reversibly accessible cations [PtL2 ]+ and [Pd2 L4 ]+ were also studied, the latter as [Pd2 L4 ][B{3,5-(CF3 )2 C6 H3 }4 ] single crystals. Experimental and computational investigations were directed at the elucidation of the electronic structures, establishing the correct oxidation states within the alternatives [PtII (L- )2 ] or [Pt. (L )2 ], [PtII (L0.5- )2 ]+ or [PtIII (L- )2 ]+ , [(PdII )2 (μ-L- )4 ] or [(Pd1.5 )2 (μ-L0.75- )4 ], and [(Pd2.5 )2 (μ-L- )4 ]+ or [(PdII )2 (μ-L0.75- )4 ]+ . In each case, the first alternative was shown to be most appropriate. Remarkable results include the preference of platinum for mononuclear planar [PtL2 ] with an N-Pt-N bite angle of 62.8(2)° in contrast to [Pd2 L4 ], and the dimetal (Pd2 4+ →Pd2 5+ ) instead of ligand (L- →L ) oxidation of the dinuclear palladium compound.
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Affiliation(s)
- Fabian Ehret
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany
| | - Vasileios Filippou
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany
| | - Svenja Blickle
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany
| | - Martina Bubrin
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany
| | - Stanislav Záliš
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, 18223, Prague, Czech Republic
| | - Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550, Stuttgart, Germany
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Abbenseth J, Wätjen F, Finger M, Schneider S. The Metaphosphite (PO
2
−
) Anion as a Ligand. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Josh Abbenseth
- Universität Göttingen Institut für Anorganische Chemie Tammannstrasse 4 37077 Göttingen Germany
| | - Florian Wätjen
- Universität Göttingen Institut für Anorganische Chemie Tammannstrasse 4 37077 Göttingen Germany
| | - Markus Finger
- Universität Göttingen Institut für Anorganische Chemie Tammannstrasse 4 37077 Göttingen Germany
| | - Sven Schneider
- Universität Göttingen Institut für Anorganische Chemie Tammannstrasse 4 37077 Göttingen Germany
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Abbenseth J, Wätjen F, Finger M, Schneider S. The Metaphosphite (PO 2 - ) Anion as a Ligand. Angew Chem Int Ed Engl 2020; 59:23574-23578. [PMID: 32936501 PMCID: PMC7756739 DOI: 10.1002/anie.202011750] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Indexed: 12/18/2022]
Abstract
The utilization of monomeric, lower phosphorous oxides and oxoanions, such as metaphosphite (PO2 - ), which is the heavier homologue of the common nitrite anion but previously only observed in the gas phase and by matrix isolation, requires new synthetic strategies. Herein, a series of rhenium(I-III) complexes with PO2 - as ligand is reported. Synthetic access was enabled by selective oxygenation of a terminal phosphide complex. Spectroscopic and computational examination revealed slightly stronger σ-donor and comparable π-acceptor properties of PO2 - compared to homologous NO2 - , which is one of the archetypal ligands in coordination chemistry.
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Affiliation(s)
- Josh Abbenseth
- Universität GöttingenInstitut für Anorganische ChemieTammannstrasse 437077GöttingenGermany
| | - Florian Wätjen
- Universität GöttingenInstitut für Anorganische ChemieTammannstrasse 437077GöttingenGermany
| | - Markus Finger
- Universität GöttingenInstitut für Anorganische ChemieTammannstrasse 437077GöttingenGermany
| | - Sven Schneider
- Universität GöttingenInstitut für Anorganische ChemieTammannstrasse 437077GöttingenGermany
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Vilella-Arribas L, García-Melchor M, Balcells D, Lledós A, López JA, Sancho S, Villarroya BE, del Río MP, Ciriano MA, Tejel C. Rhodium Complexes Promoting C−O Bond Formation in Reactions with Oxygen: The Role of Superoxo Species. Chemistry 2017; 23:5232-5243. [DOI: 10.1002/chem.201605959] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Laia Vilella-Arribas
- Departament de Química; Universitat Autònoma de Barcelona; Cerdanyola del Vallès 08193 Barcelona Spain
| | - Max García-Melchor
- School of Chemistry; Trinity College Dublin; College Green Dublin 2 Ireland
| | - David Balcells
- Centre for Theoretical and Computational Chemistry (CTCC) and Department of Chemistry; University of Oslo; P.O. Box 1033, Blindern 0315 Oslo Norway
| | - Agustí Lledós
- Departament de Química; Universitat Autònoma de Barcelona; Cerdanyola del Vallès 08193 Barcelona Spain
| | - José A. López
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálsis Homogénea (ISQCH); CSIC Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Sofía Sancho
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálsis Homogénea (ISQCH); CSIC Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - B. Eva Villarroya
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálsis Homogénea (ISQCH); CSIC Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - M. Pilar del Río
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálsis Homogénea (ISQCH); CSIC Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Miguel A. Ciriano
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálsis Homogénea (ISQCH); CSIC Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Cristina Tejel
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálsis Homogénea (ISQCH); CSIC Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
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Kaim W. Electron Transfer Reactivity of Organometallic Compounds Involving Radical-Forming Noninnocent Ligands. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0304-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hinz A, Schulz A, Villinger A. Synthesis of a Molecule with Four Different Adjacent Pnictogens. Chemistry 2016; 22:12266-9. [PMID: 27377437 DOI: 10.1002/chem.201601916] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Indexed: 11/11/2022]
Abstract
The synthesis of a molecule containing four adjacent different pnictogens was attempted by conversion of a Group 15 allyl analogue anion [Mes*NAsPMes*](-) (Mes*=2,4,6-tri-tert-butylphenyl) with antimony(III) chloride. A suitable precursor is Mes*N(H)AsPMes* (1) for which several syntheses were investigated. The anions afforded by deprotonation of Mes*N(H)AsPMes* were found to be labile and, therefore, salts could not be isolated. However, the in situ generated anions could be quenched with SbCl3 , yielding Mes*N(SbCl2 )AsPMes* (4).
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Affiliation(s)
- Alexander Hinz
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Axel Schulz
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059, Rostock, Germany. .,Leibniz-Institut für Katalyse e. V. Rostock, Albert-Einstein-Strasse 29a, 18059, Rostock, Germany.
| | - Alexander Villinger
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059, Rostock, Germany
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Mandal A, Schwederski B, Fiedler J, Kaim W, Lahiri GK. Evidence for Bidirectional Noninnocent Behavior of a Formazanate Ligand in Ruthenium Complexes. Inorg Chem 2015; 54:8126-35. [DOI: 10.1021/acs.inorgchem.5b01408] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abhishek Mandal
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Brigitte Schwederski
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Jan Fiedler
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova
3, CZ-18223 Prague, Czech Republic
| | - Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Goutam Kumar Lahiri
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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Ehret F, Bubrin M, Záliš S, Kaim W. Metal-Chelating N,N'-Bis(4-dimethylaminophenyl)acetamidinyl Radical: A New Chromophore for the Near-Infrared Region. Chemistry 2015; 21:12275-8. [PMID: 26179080 DOI: 10.1002/chem.201501875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 11/12/2022]
Abstract
A new non-innocent ligand redox system, N,N'-bis(4-dimethylaminophenyl) substituted acetamidinato/acetamidinyl, has been designed and described by example of structurally and spectroscopically characterized ruthenium complexes. The hitherto unreported ligand is responsible for rather intense and narrow absorptions in the near-infrared region of the one- and two-electron oxidized forms. The spectroscopic, computational, and first structural characterization of an amidinyl radical complex adds to the list of established N-based radical ligands.
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Affiliation(s)
- Fabian Ehret
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart (Germany)
| | - Martina Bubrin
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart (Germany)
| | - Stanislav Záliš
- J. Heyrovský Institute of Physical Chemistry, v.v.i. Academy of Sciences of the Czech Republic, Dolejškova 3, 18223 Prague (Czech Republic)
| | - Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart (Germany).
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Kaim W. Complete and Partial Electron Transfer Involving Coordinated NOx. ADVANCES IN INORGANIC CHEMISTRY 2015. [DOI: 10.1016/bs.adioch.2014.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hinz A, Schulz A, Villinger A. Accessing heavy allyl-analogous [(TerN)2E]− (E = Sb, Bi) ions and their reactivity towards ECl3. Chem Commun (Camb) 2015; 51:11437-40. [DOI: 10.1039/c5cc04355g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Highly reactive heavy heteroatom allyl analogues were obtained by reduction of 1,3-dichloro-cyclo-1,3-dipnicta-2,4-diazanes.
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Affiliation(s)
- Alexander Hinz
- Institut für Chemie
- Universität Rostock
- 18059 Rostock
- Germany
| | - Axel Schulz
- Institut für Chemie
- Universität Rostock
- 18059 Rostock
- Germany
- Abteilung Materialdesign
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Ehret F, Bubrin M, Záliš S, Kaim W. Non-innocent Redox Behavior of Amidinato Ligands: Spectroscopic Evidence for Amidinyl Complexes. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201400306] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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