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Mena I, Jaseer EA, Casado MA, García-Orduña P, Lahoz FJ, Oro LA. Terminal and Bridging Parent Amido 1,5-Cyclooctadiene Complexes of Rhodium and Iridium. Chemistry 2013; 19:5665-75. [DOI: 10.1002/chem.201204391] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 11/05/2022]
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Nguyen DH, Modrego FJ, Cetina-Casas JM, Gómez-Bautista D, Jiménez MV, Castarlenas R, Lahoz FJ, Oro LA, Pérez-Torrente JJ. Steric Effects in the Oxidative Addition of MeI to a Sulfido-Bridged ZrRh2 Early–Late Heterobimetallic Compound. Organometallics 2012. [DOI: 10.1021/om300629k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Duc Hanh Nguyen
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - F. Javier Modrego
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - J. Miguel Cetina-Casas
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - Daniel Gómez-Bautista
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - M. Victoria Jiménez
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - Ricardo Castarlenas
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - Fernando J. Lahoz
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - Luis A. Oro
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
| | - Jesús J. Pérez-Torrente
- Departamento de
Quı́mica Inorgánica, Instituto de
Sı́ntesis Quı́mica y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009-Zaragoza,
Spain
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3
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Ebihara M, Kanematsu N, Sakuma T, Noritake S, Kawamura T. Ligand substitution reactions of bis(μ-acetato)dichlorodicarbonyldiiridium(II). Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2005.01.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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4
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Casado MA, Pérez-Torrente JJ, Ciriano MA, Dobrinovitch IT, Lahoz FJ, Oro LA. Stereoselective oxidative additions of iodoalkanes and activated alkynes to a sulfido-bridged heterotrinuclear early-late (TiIr2) complex. Inorg Chem 2003; 42:3956-64. [PMID: 12793835 DOI: 10.1021/ic034278e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactions of the early-late trinuclear complex [Cp(acac)Ti(mu(3)-S)(2)Ir(2)(CO)(4)] (1) with electrophiles have been found to occur on the iridium atoms with no other involvement of the early metal than in electronic effects. The reaction with iodine gave two isomers of the diiridium(II) complex [Cp(acac)Ti(mu(3)-S)(2)Ir(2)I(2)(CO)(4)] differentiated by the relative positions of the iodo ligands on the iridium atoms. The reactions with iodoalkanes are highly stereoselective to give one sole isomer of formula [Cp(acac)Ti(mu(3)-S)(2)Ir(2)(R)(I)(CO)(4)] (R = CH(3), CH(2)I, CHI(2)) with a carbonyl and the iodo ligand trans to the metal-metal bond. The structures of the symmetrical isomer with the iodo ligands trans to the metal-metal bond and that of the compound with R = CHI(2) have been solved by X-ray diffraction methods. The stereoselectivity of the oxidative-addition reactions can be rationalized assuming the influence of steric effects of the groups on the titanium center and a radical-like mechanism. Reactions of 1 with the activated acetylenes, dimethylacetylenedicarboxylate and methylacetylenecarboxylate, gave the complexes [Cp(acac)Ti(mu(3)-S)(2)Ir(2)(mu-eta(1)-RC=CCO(2)Me)(CO)(4)] (R = CO(2)Me, H), with the alkyne bridging the two iridium centers as a cis-dimetalated olefin and the C=C bond parallel to the Ir-Ir axis. Two isomers resulting from the disposition of the alkyne along the Ir-Ir vector were observed in solution for the compound with the nonsymmetrical alkyne (R = H), while only one was observed for the compound with R = CO(2)Me. An exchange, fast in the NMR time scale, of the apical with the equatorial carbonyls occured in the complexes [Cp(acac)Ti(mu(3)-S)(2)Ir(2)(mu-eta(1)-RC=CCO(2)Me)(CO)(4)], producing their equivalence in the (13)C((1)H) NMR spectra.
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Affiliation(s)
- Miguel A Casado
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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Veiros LF, Minas da Piedade ME. On the transferability of IrI bond enthalpies between [Ir(μ-StBu)(I)2(CO)2]2 and trans-[Ir(X)(I)2(CO)(PPh3)2] (X=F, Cl, Br, I) complexes. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01896-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Organometallic complexes of pyrazoles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2001. [DOI: 10.1016/s0065-2725(01)80014-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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7
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Carmona D, Ferrer J, Arilla JM, Reyes J, Lahoz FJ, Elipe S, Modrego FJ, Oro LA. Synthesis, Characterization, and Theoretical Studies on Heterobinuclear (p-cymene)Os(μ-pz)2M (M = Ir, Rh; Hpz = Pyrazole) Complexes. Organometallics 2000. [DOI: 10.1021/om990624h] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Carmona
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - Joaquina Ferrer
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - José M. Arilla
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - Josefa Reyes
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - Sergio Elipe
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - F. Javier Modrego
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
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Tejel C, Bordonaba M, Ciriano MA, Edwards AJ, Clegg W, Lahoz FJ, Oro LA. Oxidative-Addition Reactions of Diiodine to Dinuclear Rhodium Pyrazolate Complexes. Inorg Chem 1999; 38:1108-1117. [PMID: 11670891 DOI: 10.1021/ic980650s] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The pyrazolato (Pz) rhodium(I) complexes [{Rh(&mgr;-Pz)(CO)(L)}(2)] (L = CNBu(t), P(OMe)(3), PMe(2)Ph, P(OPh)(3), P(p-tolyl)(3)) result from the reaction of [{Rh(&mgr;-Pz)(CO)(2)}(2)] with the appropriate L ligand in a trans:cis ratio ranging from 60:40 (L = CNBu(t)) to 95:5 (L = P(p-tolyl)(3)). The pure trans isomers add 1 molar equiv of diiodine to give the dirhodium(II) complexes [{Rh(&mgr;-Pz)(I)(CO)(L)}(2)] (L = CNBu(t) (6), P(OMe)(3) (7), PMe(2)Ph (8), P(OPh)(3) (9)). These complexes incorporate two iodide ligands trans to the rhodium-rhodium bond, as substantiated by the X-ray structure for 7, while the complex [(P{p-tolyl}(3))(CO)(I)Rh(&mgr;-Pz)(2)(&mgr;-CO)Rh(I)(P{p-tolyl}(3))] (10) contains a bridging ketonic CO ligand, due to the insertion of a terminal CO into the metal-metal bond. The metal-metal bond formation involves a 2e oxidation, since identical compounds (6-9) are obtained by oxidation with [Fe(Cp)(2)](PF(6)) followed by addition of potassium iodide. Further reactions of the dirhodium(II) complexes 6-9 with diiodine leading to the metal-metal rupture are electrophilic additions, as exemplified by the reactions with the positive iodine complex [I(Py)(2)](+). They start at the "endo site" (the metal-metal bond) if it is sterically accessible to the electrophile, to give directly the dirhodium(III) complexes [{Rh(&mgr;-Pz)(I)(CO)(L)}(2)(&mgr;-I)](+) (L = CNBu(t), CO). Otherwise, as for the complexes with P-donor ligands, abstraction of a iodide ligand trans to the metal-metal bond (the "exo site") occurs first, to give the dirhodium(II) cationic complexes [(PR(3))(CO)(I)Rh(&mgr;-Pz)(2)Rh(CO)(PR(3))](+) and triiodide. These react again with diiodine to give dirhodium(III) complexes [{Rh(&mgr;-Pz)(I)(CO)(PR(3))}(2)(&mgr;-I)](+) similar to those described above, but with triiodide or pentaiodide as counterion, as substantiated by the X-ray structure of [{Rh(&mgr;-Pz)(I)(CO)(PMe(2)Ph)}(2)(&mgr;-I)]I(5) (18). The diiridium(II) complexes [{Ir(&mgr;-Pz)(I)(CO)(PR(3))}(2)] (PR(3) = P(OPh)(3), PMe(2)Ph) also react with diiodine to give the cationic diiridium(III) complexes [{Ir(&mgr;-Pz)(I)(CO)(PR(3))}(2)(&mgr;-I)]I(3) through a reaction pathway involving the "exo site", while no reaction is observed for [{Ir(&mgr;-Pz)(I)(CO)(2)}(2)]. Finally, replacement of a carbonyl ligand in [{Rh(&mgr;-Pz)(I)(CO)(L)}(2)(&mgr;-I)](+) (L = CNBu(t), CO) by iodide gives the compounds [(CO)(L)(I)Rh(&mgr;-Pz)(2)(&mgr;-I)Rh(I)(2)(L)].
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Affiliation(s)
- Cristina Tejel
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain, and Department of Chemistry, University of Newcastle, Newcastle upon Tyne, NE1 7RU, U.K
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