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Cid-Seara KM, Pereira-Cameselle R, Bolaño S, Talavera M. Selective Schiff Base Formation of Group 9 Organometallic Complexes with Functionalized Spirobifluorene Ligands. Molecules 2023; 28:7155. [PMID: 37894636 PMCID: PMC10609629 DOI: 10.3390/molecules28207155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Organic amines are important compounds present in a wide variety of products, which makes the development of new systems for their detection an interesting field of study. New organometallic complexes of group 9 [MCp*X(2'-R-2-py-SBF)] (M = Ir, Rh; R = H, X = Cl (6), R = H, X = OAc (7), R = CHO, X = Cl (8)), and [IrCp*Cl(2', 7-diCHO-2-py-SBF)] (9) (Cp* pentamethylcyclopentadienyl, SBF = 9,9'-spirobifluorene) bearing bidentate C-N ligands based on 9,9'-spirobifluorene were obtained and characterized by NMR spectroscopy, mass spectrometry, IR spectroscopy, and X-ray diffraction analysis when possible. The formation of a Schiff base to give complexes with the formula [MCp*Cl(2'-CH=NR-2-py-SBF)] (M = Ir, Rh; R = alkyl or aryl (10-12)), through condensation of an amine, and the aldehyde group present in these new complexes was studied leading to a selective reactivity depending on the nature of the amine and the metal center. While the iridium complexes only react with aromatic amines, the rhodium derivative requires heat for those but can react at room temperature with aliphatic amines.
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Affiliation(s)
- Krystal M. Cid-Seara
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310 Vigo, Spain
| | | | - Sandra Bolaño
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310 Vigo, Spain
| | - Maria Talavera
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310 Vigo, Spain
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2
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Synthesis of iridaoxaphospholane complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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3
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Andrés JL, Suárez E, Martín M, Sola E. Mechanistic Versatility at Ir(PSiP) Pincer Catalysts: Triflate Proton Shuttling from 2-Butyne to Diene and [3]Dendralene Motifs. Organometallics 2022; 41:2622-2630. [PMID: 36185395 PMCID: PMC9518705 DOI: 10.1021/acs.organomet.2c00375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Indexed: 11/28/2022]
Abstract
![]()
The five-coordinate
hydrido complex [IrH(OTf)(PSiP)]
(1) catalytically transforms 2-butyne into a mixture
of its isomer
1,3-butadiene, and [3]dendralene and linear hexatriene dimerization
products: (E)-4-methyl-3-methylene-1,4-hexadiene
and (3Z)-3,4-dimethyl-1,3,5-hexatriene, respectively.
Under the conditions of the catalytic reaction, benzene, and 363 K,
the hexatriene further undergoes thermal electrocyclization into 2,3-dimethyl-1,3-cyclohexadiene.
The reactions between 1 and the alkyne substrate allow
isolation or nuclear magnetic resonance (NMR) observation of catalyst
resting states and possible reaction intermediates, including complexes
with the former PSiP pincer ligands disassembled into PSi and PC chelates,
and species coordinating allyl or carbene fragments en route to products.
The density functional theory (DFT) calculations guided by these experimental
observations disclose competing mechanisms for C–H bond elaboration
that move H atoms either classically, as hydrides, or as protons transported
by the triflate. This latter role of triflate, previously recognized
only for more basic anions such as carboxylates, is discussed to result
from combining the unfavorable charge separation in the nonpolar solvent
and the low electronic demand from the metal to the anion at coordination
positions trans to silicon. Triflate deprotonation of methyl groups
is key to release highly coordinating diene products from stable allyl
intermediates, thus enabling catalytic cycling.
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Affiliation(s)
- José L. Andrés
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC − Universidad de Zaragoza, Facultad de Ciencias, E50009 Zaragoza, Spain
| | - Elizabeth Suárez
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC − Universidad de Zaragoza, Facultad de Ciencias, E50009 Zaragoza, Spain
| | - Marta Martín
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC − Universidad de Zaragoza, Facultad de Ciencias, E50009 Zaragoza, Spain
| | - Eduardo Sola
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC − Universidad de Zaragoza, Facultad de Ciencias, E50009 Zaragoza, Spain
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4
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Talavera M, Cid-Seara KM, Peña-Gallego Á, Bolaño S. Key factors in the synthesis of polycyclic iridaaromatics via the methoxyalkenylcarbene pathway. Dalton Trans 2021; 50:11216-11220. [PMID: 34338266 DOI: 10.1039/d1dt01361k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Polycyclic iridaaromatic compounds are of great interest not only because of the contributions made in "aromatic chemistry", but also because of the possibility of improving the results of the applications of the corresponding organic analogues in different fields. Therefore, understanding the requirements necessary to build on demand this type of compound with specific properties is of great importance. In this work, the keys to successfully synthesize iridaaromatic complexes via methoxyalkenylcarbenes are established. Experimental and theoretical results show (i) that bearing two aromatic substituents on the gamma carbon of the methoxyalkylcarbene promotes the C-H bond activation; (ii) the need for large steric hindrance of the second substituent for a selective synthesis and, (iii) the selectivity in the C-H bond activation towards the less sterically hindered system.
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Affiliation(s)
- Maria Talavera
- Universidade de Vigo, Departamento de Química Inorgánica, Campus Universitario, 36310, Vigo, Spain.
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5
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Talavera M, Bolaño S. Iridaaromatics via Methoxy(alkenyl)carbeneiridium Complexes. Molecules 2021; 26:molecules26154655. [PMID: 34361807 PMCID: PMC8347548 DOI: 10.3390/molecules26154655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 11/26/2022] Open
Abstract
This review describes the development of a versatile methodology to synthesize polycyclic metallaaromatic hydrocarbons based on iridium, as well as the studies that helped us to determine and understand what is required in order to broaden the scope and the selectivity of the methodology and stabilize the complexes obtained. This methodology aims to open the door to new materials based on graphene fragments.
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Affiliation(s)
- Maria Talavera
- Department of Chemistry, Humboldt–Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany;
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310 Vigo, Spain
| | - Sandra Bolaño
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310 Vigo, Spain
- Correspondence:
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6
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Pereira-Cameselle R, Peña-Gallego Á, Cid-Seara KM, Alonso-Gómez JL, Talavera M, Bolaño S. Chemoselectivity on the synthesis of iridacycles: A theoretical and experimental study. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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7
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Arias-Coronado VC, Pereira-Cameselle R, Ozcelik A, Talavera M, Peña-Gallego Á, Alonso-Gómez JL, Bolaño S. Spirobifluorene Metallaaromatics. Chemistry 2019; 25:13496-13499. [PMID: 31430403 DOI: 10.1002/chem.201903213] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/15/2019] [Indexed: 12/11/2022]
Abstract
Spirobifluorene derivatives find use in many end-user applications. Therefore, further expansion of their scope is the focus of many research studies. However, although the optical properties of spirobifluorenes can be greatly tuned through incorporation of metal complexes, to date, spirobifluorene metallaaromatics remain unknown. Taking advantage of the versatility of our methodology for the synthesis of metallaaromatic systems, this work reports the first metallaaromatic spirobifluorene compound. The presence of an Ir atom was found to redshift the absorption maximum by ca. 1.1 eV compared to bare spirobifluorene. Additionally, X-ray analysis as well as anisotropy of the current-induced density calculations revealed this compound to be of aromatic nature. The high stability in solution, solid state, under air, and at high temperature, as well as distinct optical properties of this new class of compounds are expected to open new frontiers for chiroptical and optoelectronic applications.
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Affiliation(s)
- Vanessa C Arias-Coronado
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310, Vigo, Spain.,Departamento de Química Orgánica, Universidad de Vigo, Campus Universitario, 36310, Vigo, Spain
| | | | - Ani Ozcelik
- Departamento de Química Orgánica, Universidad de Vigo, Campus Universitario, 36310, Vigo, Spain
| | - Maria Talavera
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310, Vigo, Spain
| | - Ángeles Peña-Gallego
- Departamento de Química Física, Universidad de Vigo, Campus Universitario, 36310, Vigo, Spain
| | - J Lorenzo Alonso-Gómez
- Departamento de Química Orgánica, Universidad de Vigo, Campus Universitario, 36310, Vigo, Spain
| | - Sandra Bolaño
- Departamento de Química Inorgánica, Universidade de Vigo, Campus Universitario, 36310, Vigo, Spain
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8
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Talavera M, Pereira-Cameselle R, Bolaño S. Rhodafuran from a methoxy(alkenyl)carbene by the rhoda-1,3,5-hexatriene route. Dalton Trans 2018; 47:9064-9071. [PMID: 29931013 DOI: 10.1039/c8dt01889h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A methoxy(alkenyl)carbenerhodium complex [RhCp*Cl{[double bond, length as m-dash]C(OMe)CH[double bond, length as m-dash]CPh2}(PMe3)]PF6 (2) has been synthesized and used as the starting material for the study of the effect of the metal center (Rh vs. Ir) in the formation of new rhodacycle complexes. While η3 and η5 indenylrhodium complexes have been achieved by the C-H bond activation of a phenyl ring, insertion of terminal alkynes into the rhodium-carbene bond led to the first example of the synthesis of rhodafuran complexes through rhoda-1,3,5-hexatriene intermediates. This new method represents an efficient process to obtain metallafuran complexes.
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Affiliation(s)
- M Talavera
- Departamento de Química Inorgánica, Universidad de Vigo, Campus Universitario, E-36310 Vigo, Spain.
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9
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10
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Drover MW, Christopherson CJ, Schafer LL, Love JA. C(sp
3
)–H Bond Activation Induced by Monohydroborane Coordination at an Iridium(III)–Phosphoramidate Complex. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marcus W. Drover
- Department of Chemistry The University of British Columbia V6T 1Z1 Vancouver BC Canada
| | | | - Laurel L. Schafer
- Department of Chemistry The University of British Columbia V6T 1Z1 Vancouver BC Canada
| | - Jennifer A. Love
- Department of Chemistry The University of British Columbia V6T 1Z1 Vancouver BC Canada
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11
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Albertin G, Antoniutti S, Bortoluzzi M, Castro J, Sibilla F, Trave E. Preparation of metalated azine complexes of iridium(iii). NEW J CHEM 2017. [DOI: 10.1039/c7nj02224g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of half-sandwich κ1-aldazine and κ1-ketazine complexes of iridium and their metalation reaction affording chelate κ2-azine derivatives are described. The photoluminescence properties of the chelate complexes are also described.
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Jesús Castro
- Departamento de Química Inorgánica
- Universidade de Vigo
- Facultade de Química
- Edificio de Ciencias Experimentais
- 36310 Vigo (Galicia)
| | - Francesca Sibilla
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Enrico Trave
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Mestre Venezia
- Italy
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12
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2013. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Vivancos Á, Hernández YA, Paneque M, Poveda ML, Salazar V, Álvarez E. Formation of β-Metallanaphthalenes by the Coupling of a Benzo-Iridacyclopentadiene with Olefins. Organometallics 2014. [DOI: 10.1021/om5010435] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ángela Vivancos
- Instituto
de Investigaciones Quı́micas (IIQ), Departamento de Quı́mica
Inorgánica, and Centro de Innovación en Quı́mica
Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
| | - Yohar A. Hernández
- Instituto
de Investigaciones Quı́micas (IIQ), Departamento de Quı́mica
Inorgánica, and Centro de Innovación en Quı́mica
Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
| | - Margarita Paneque
- Instituto
de Investigaciones Quı́micas (IIQ), Departamento de Quı́mica
Inorgánica, and Centro de Innovación en Quı́mica
Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
| | - Manuel L. Poveda
- Instituto
de Investigaciones Quı́micas (IIQ), Departamento de Quı́mica
Inorgánica, and Centro de Innovación en Quı́mica
Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
| | - Verónica Salazar
- Centro
de Investigaciones Quı́micas, Universidad Autónoma del Estado de Hidalgo, Pachuca, Hidalgo, México
| | - Eleuterio Álvarez
- Instituto
de Investigaciones Quı́micas (IIQ), Departamento de Quı́mica
Inorgánica, and Centro de Innovación en Quı́mica
Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla, Avda. Américo
Vespucio 49, 41092 Sevilla, Spain
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14
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Talavera M, Bravo J, Gonsalvi L, Peruzzini M, Zuccaccia C, Bolaño S. [IrCp*(NCMe)
2
(PPh
2
Me)][PF
6
]
2
as Catalyst for the Meyer–Schuster Rearrangement of Arylpropargylic Alcohols under Mild Conditions. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402882] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- María Talavera
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Vigo, 36310 Vigo, Spain, http://webs.uvigo.es/webc09/inorganica.php?mod=qi2
| | - Jorge Bravo
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Vigo, 36310 Vigo, Spain, http://webs.uvigo.es/webc09/inorganica.php?mod=qi2
| | - Luca Gonsalvi
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Orgnometallici (ICCOM‐CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Maurizio Peruzzini
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Orgnometallici (ICCOM‐CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Sandra Bolaño
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Vigo, 36310 Vigo, Spain, http://webs.uvigo.es/webc09/inorganica.php?mod=qi2
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