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Galiana‐Cameo M, Passarelli V, Pérez‐Torrente JJ, Di Giuseppe A, Castarlenas R. Variation on the π‐Acceptor Ligand within a Rh
I
−N‐Heterocyclic Carbene Framework: Divergent Catalytic Outcomes for Phenylacetylene‐Methanol Transformations. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100399] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- María Galiana‐Cameo
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) Universidad de Zaragoza-CSIC C/Pedro Cerbuna 12 CP 50009 Zaragoza Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) Universidad de Zaragoza-CSIC C/Pedro Cerbuna 12 CP 50009 Zaragoza Spain
| | - Jesús J. Pérez‐Torrente
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) Universidad de Zaragoza-CSIC C/Pedro Cerbuna 12 CP 50009 Zaragoza Spain
| | - Andrea Di Giuseppe
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) Universidad de Zaragoza-CSIC C/Pedro Cerbuna 12 CP 50009 Zaragoza Spain
- Dipartimento di Scienze Fisiche e Chimiche Università dell'Aquila Via Vetoio 67100 Coppito (AQ) Italy
| | - Ricardo Castarlenas
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) Universidad de Zaragoza-CSIC C/Pedro Cerbuna 12 CP 50009 Zaragoza Spain
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Denisov MS, Dmitriev MV, Eroshenko DV, Slepukhin PA, Shavkunov SP, Glushkov VA. Cationic—Anionic Pd(II) Complexes with Adamantylimidazolium Cation: Synthesis, Structural Study, and MAO-Inhibiting Activity. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s0036023619010054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Huynh HV. Electronic Properties of N-Heterocyclic Carbenes and Their Experimental Determination. Chem Rev 2018; 118:9457-9492. [DOI: 10.1021/acs.chemrev.8b00067] [Citation(s) in RCA: 446] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
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Palacios L, Meheut Y, Galiana-Cameo M, Artigas MJ, Di Giuseppe A, Lahoz FJ, Polo V, Castarlenas R, Pérez-Torrente JJ, Oro LA. Design of Highly Selective Alkyne Hydrothiolation RhI-NHC Catalysts: Carbonyl-Triggered Nonoxidative Mechanism. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00251] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Laura Palacios
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Yoann Meheut
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - María Galiana-Cameo
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - María José Artigas
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Andrea Di Giuseppe
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Victor Polo
- Departamento
de Química Física, Universidad de Zaragoza, C/Pedro
Cerbuna 12, 50009 Zaragoza, Spain
| | - Ricardo Castarlenas
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Jesús J. Pérez-Torrente
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Center
of Research Excellence in Petroleum Refining and Petrochemicals, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia
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Nonnenmacher M, Buck DM, Kunz D. Experimental and theoretical investigations on the high-electron donor character of pyrido-annelated N-heterocyclic carbenes. Beilstein J Org Chem 2016; 12:1884-1896. [PMID: 27829895 PMCID: PMC5082490 DOI: 10.3762/bjoc.12.178] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 08/04/2016] [Indexed: 11/23/2022] Open
Abstract
Rh(CO)2Cl(NHC) complexes of dipyrido-annelated N-heterocyclic carbenes were prepared. From the C–H coupling constant of the respective imidazolium salts and the N–C–N angle of the N-heterocyclic carbene (NHC), a weaker σ-donor character than that of typical unsaturated NHCs is expected. However, the IR stretching frequencies of their Rh(CO)2Cl complexes suggest an electron-donor character even stronger than that of saturated NHCs. We ascribe this to the extremely weak π-acceptor character of the dipyrido-annelated NHCs caused by the conjugated 14 πe− system that thus allows for an enhanced Rh–CO backbonding. This extremely low π-acceptor ability is also corroborated by the 77Se NMR chemical shift of −55.8 ppm for the respective selenourea, the lowest value ever measured for imidazole derived selenoureas. DFT-calculations of the free carbene confirm the low σ-donor character by the fact that the σ-orbital of the carbene is the HOMO−1 that lies 0.58 eV below the HOMO which is located at the π-system. Natural population analysis reveals the lowest occupation of the pπ-orbital for the saturated carbene carbon atom and the highest for the pyrido-annelated carbene. Going from the free carbene to the Rh(CO)2Cl(NHC) complexes, the increase in occupancy of the complete π-system of the carbene ligand upon coordination is lowest for the pyrido-annelated carbene and highest for the saturated carbene.
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Affiliation(s)
- Michael Nonnenmacher
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 250, D-69120 Heidelberg, Germany
| | - Dominik M Buck
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany (current address of corresponding author)
| | - Doris Kunz
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 250, D-69120 Heidelberg, Germany; Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany (current address of corresponding author)
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