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Cámpora J. Ernesto Carmona: Organometallic Chemistry Pioneer in Southern Europe—A Biographical Outline. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tan C, Chen W, Mu X, Chen Q, Gong J, Luo T, Yang Z. Synthetic Progress toward Azadirachtins. 2. Enantio- and Diastereoselective Synthesis of the Right-Wing Fragment of 11-epi-Azadirachtin I. Org Lett 2015; 17:2338-41. [DOI: 10.1021/acs.orglett.5b00831] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ceheng Tan
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Wei Chen
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Xinpeng Mu
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Qi Chen
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jianxian Gong
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Tuoping Luo
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science
(BNLMS) and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Zhen Yang
- Laboratory
of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Key
Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry
of Education and Beijing National Laboratory for Molecular Science
(BNLMS) and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Key
Laboratory of Marine Drugs, Chinese Ministry of Education, School
of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
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Esqueda AC, Conejero S, Maya C, Carmona E. Synthesis of Rhodium Complexes with Bulky Substituted Cyclopentadienyl Ligands. H/D Exchange Reactions and Silane Activation. Organometallics 2010. [DOI: 10.1021/om100412q] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Ana Cristina Esqueda
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Salvador Conejero
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Celia Maya
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Ernesto Carmona
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
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Garcés A, Sánchez-Barba LF, Alonso-Moreno C, Fajardo M, Fernández-Baeza J, Otero A, Lara-Sánchez A, López-Solera I, Rodríguez AM. Hybrid Scorpionate/Cyclopentadienyl Magnesium and Zinc Complexes: Synthesis, Coordination Chemistry, and Ring-Opening Polymerization Studies on Cyclic Esters. Inorg Chem 2010; 49:2859-71. [DOI: 10.1021/ic902399r] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrés Garcés
- Departamento de Química Inorgánica y Analítica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
| | - Luis F. Sánchez-Barba
- Departamento de Química Inorgánica y Analítica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
| | - Carlos Alonso-Moreno
- Departamento de Química Inorgánica y Analítica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Campus Universitario, 13071-Ciudad Real, Spain
| | - Mariano Fajardo
- Departamento de Química Inorgánica y Analítica, Universidad Rey Juan Carlos, Móstoles-28933-Madrid, Spain
| | - Juan Fernández-Baeza
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Campus Universitario, 13071-Ciudad Real, Spain
| | - Antonio Otero
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Campus Universitario, 13071-Ciudad Real, Spain
| | - Agustín Lara-Sánchez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Campus Universitario, 13071-Ciudad Real, Spain
| | - Isabel López-Solera
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Campus Universitario, 13071-Ciudad Real, Spain
| | - Ana María Rodríguez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Campus Universitario, 13071-Ciudad Real, Spain
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Cyclopentadienyltin(IV) derivatives: Synthesis, characterization and study of their cytotoxic activities. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.05.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Jin L, Fu LJ, Ding YH. Zinc (0) chemistry: does the missing 18-electron zinc tricarbonyl really exist? Phys Chem Chem Phys 2010; 12:10956-62. [DOI: 10.1039/c003503c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Rhodium and iridium olefin complexes with bulky cyclopentadienyl and hydrotris(pyrazolyl)borate ligands. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Ariafard A, Tabatabaie ES, Yates BF. Mechanistic studies of ligand fluxionality in [M(eta(5)-Cp)(eta(1)-Cp)(L)2]n. J Phys Chem A 2009; 113:2982-9. [PMID: 19260667 DOI: 10.1021/jp810032a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Density functional theory has been used to provide a thorough investigation of the mechanistic factors affecting Cp ligand fluxionality in a series of organometallic complexes, [M(eta(5)-Cp)(eta(1)-Cp)(L)(2)](n), involving different metals, different oxidation states, and different ligands. Excellent agreement with experiment for the barrier heights for the 1,5-shift were obtained for the complexes [Fe(eta(5)-Cp*)(eta(1)-Cp)(CO)(2)] and [Fe(eta(5)-Cp)(eta(1)-Cp)(CO)(2)]. For the range of complexes studied, the barriers have been successfully rationalized in terms of hyperconjugation, metal-Cp bond strength, and steric effects. In addition, the eta(1)-eta(5) interconversion of the Cp binding mode is shown to be a high-energy process, consistent with experimental observations. The L substitution reactions by eta(1)-Cp are quite sensitive to the nature of the metal center and ancillary ligand. A detailed theoretical explanation of the factors involved in all of these transformations is provided.
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Affiliation(s)
- Alireza Ariafard
- Department of Chemistry, Faculty of Science, Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran.
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Zhou B, Denning MS, Chapman TAD, Goicoechea JM. Coupling Reactions of Functionalized Zintl Ions [E9Cd(C6H5)]3− (E = Sn, Pb) with Tributyltinhydride: Synthesis and Isolation of {Sn9CdSn[(CH2)3CH3]3}3−. Inorg Chem 2009; 48:2899-907. [DOI: 10.1021/ic8022826] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Binbin Zhou
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Mark S. Denning
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Thomas A. D. Chapman
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Jose M. Goicoechea
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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Esqueda AC, Conejero S, Maya C, Carmona E. Zincocenes as Mild Cyclopentadienyl Transfer Reagents toward Rhodium(I) Olefin Precursors. Facile Synthesis of (η5-Cp′)Rh(olefin)2 Compounds. Organometallics 2008. [DOI: 10.1021/om801046d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Cristina Esqueda
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC, and Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Salvador Conejero
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC, and Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Celia Maya
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC, and Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Ernesto Carmona
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, CSIC, and Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain
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11
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Fernández R, Grirrane A, Resa I, Rodríguez A, Carmona E, Álvarez E, Gutiérrez-Puebla E, Monge Á, López del Amo J, Limbach HH, Lledós A, Maseras F, del Río D. Structural Analysis of Zincocenes with Substituted Cyclopentadienyl Rings. Chemistry 2008; 15:924-35. [DOI: 10.1002/chem.200801917] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Synthesis and structural characterization of dizincocenes Zn2(η5-C5Me5)2 and Zn2(η5-C5Me4Et)2. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2008.01.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang H, Kehr G, Fröhlich R, Erker G. Ein 1,8-Naphthylen-verbrücktes Bis(indenyl)zink-THF-Addukt: Synthese und Struktur eines Ansa-Zinkocen-Derivates. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200605069] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Wang H, Kehr G, Fröhlich R, Erker G. A 1,8-Naphthylene-Bridged Bis(indenyl)zinc THF Adduct: Formation and Structure of an ansa-Zincocene Derivative. Angew Chem Int Ed Engl 2007; 46:4905-8. [PMID: 17516594 DOI: 10.1002/anie.200605069] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Huadong Wang
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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16
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Ly HV, Forster TD, Parvez M, McDonald R, Roesler R. Zinc, Cadmium, and Mercury Metallocenes Incorporating 1,2-Diaza-3,5-diborolyl Ligands. Organometallics 2007. [DOI: 10.1021/om070230n] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hanh V. Ly
- Departments of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4, and University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Taryn D. Forster
- Departments of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4, and University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Masood Parvez
- Departments of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4, and University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Departments of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4, and University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Roland Roesler
- Departments of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4, and University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Grirrane A, Resa I, Rodriguez A, Carmona E, Alvarez E, Gutierrez-Puebla E, Monge A, Galindo A, del Río D, Andersen RA. Zinc-zinc bonded zincocene structures. Synthesis and characterization of Zn2(eta5-C5Me5)2 and Zn2(eta5-C5Me4Et)2. J Am Chem Soc 2007; 129:693-703. [PMID: 17227033 DOI: 10.1021/ja0668217] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
While, in general, decamethylzincocene, Zn(C5Me5)2, and other zincocenes, Zn(C5Me4R)2 (R = H, But, SiMe3), react with dialkyl and diaryl derivatives, ZnR'2, to give the half-sandwich compounds (eta5-C5Me4R)ZnR', under certain conditions the reactions of Zn(C5Me5)2 with ZnEt2 or ZnPh2 produce unexpectedly the dizincocene Zn2(eta5-C5Me5)2 (1) in low yields, most likely as a result of the coupling of two (eta5-C5Me5)Zn* radicals. An improved, large scale (ca. 2 g) synthesis of 1 has been achieved by reduction of equimolar mixtures of Zn(C5Me5)2 and ZnCl2 with KH in tetrahydrofuran. The analogous reduction of Zn(C5Me4R)2 (R = H, SiMe3, But) yields only decomposition products, but the isotopically labeled dimetallocene 68Zn2(eta5-C5Me5)2 and the related compound Zn2(eta5-C5Me4Et)2 (2) have been obtained by this procedure. Compound 2 has lower thermal stability than 1, but it has been unequivocally characterized by low-temperature X-ray diffraction studies. As for 1 a combination of structural characterization techniques has provided unambiguous evidence for its formulation as the Zn-Zn bonded dimer Zn2(eta5-C5Me4Et)2, with a short Zn-Zn bond of 2.295(3) A indicative of a strong Zn-Zn bonding interaction. The electronic structure and the bonding properties of 1 and those of related dizincocenes Zn2(eta5-Cp')2 have been studied by DFT methods (B3LYP level), with computed bond distances and angles for dizincocene 1 very similar to the experimental values. The Zn-Zn bond is strong (ca. 62 kcal.mol-1 for 1) and resides in the HOMO-4, that has a contribution of Zn orbitals close to 60%, consisting mostly of the Zn 4s orbitals (more than 96%).
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Affiliation(s)
- Abdessamad Grirrane
- Instituto de Investigaciones Químicas-Departamento de Química InorgAnica, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas, Américo Vespucio 49, 41092 Sevilla, Spain
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Grirrane A, Resa I, del Río D, Rodríguez A, Alvarez E, Mereiter K, Carmona E. Solid-State Structures and Solution Studies of Novel Cyclopentadienyl Mercury Compounds. Inorg Chem 2007; 46:4667-76. [PMID: 17461576 DOI: 10.1021/ic0624672] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New mercury cyclopentadienyl complexes Hg(eta1-Cp')Cl have been prepared by the reaction of HgCl2 and the appropriate KCp' salts or by the transmetalation of HgCl2 with ZnCp'2 (Cp'=C5Me4H, 1; C5Me4But, 2; C5Me4SiMe3, 3; C5H4SiMe3, 4). By contrast, only the SiMe3-substituted bis(cyclopentadienyl) derivatives, Hg(C5Me4SiMe3)2 (5) and Hg(C5H4SiMe3)2 (6), can be isolated by the above synthetic procedures and the appropriate ratio of reagents or from HgCp'Cl and KCp'. Solution NMR studies reveal nonfluxional behavior of the SiMe3-substituted complexes 3, 5, and 6. X-ray studies of the solid-state structures show that the six compounds contain eta1-Cp' ligands, with linear or almost linear C-Hg-Cl or C-Hg-C coordination environments. The two HgCp'2 compounds, 5 and 6, have the expected insular structures, but the HgCp'Cl derivatives show supramolecular associations by means of weak secondary Hg...Cl interactions. Thus, the HgCp'Cl compounds 1, 3, and 4 form three different polymeric chain structures with typically two Hg...Cl interactions of 3.04-3.46 A per mercury. By contrast, 2 forms a tetramer, [Hg(C5Me4SiMe3)Cl]4, with a cubelike arrangement of four Hg and four Cl atoms. Density functional theory has been used to investigate the electronic structure of the compounds.
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Affiliation(s)
- Abdessamad Grirrane
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, Avda. Américo Vespucio s/n, 41092 Sevilla, Spain
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Alvarez E, Grirrane A, Resa I, del Río D, Rodríguez A, Carmona E. Cyclopentadienyl Zincates: Synthesis and X-ray Studies of Sodium and Potassium Salts of the [Zn(C5H5)3]− and [Zn2(C5H5)5]− Ions. Angew Chem Int Ed Engl 2007; 46:1296-9. [PMID: 17205588 DOI: 10.1002/anie.200603875] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eleuterio Alvarez
- Instituto de Investigaciones Químicas, Departamento de Química Inorgánica, Consejo Superior de Investigaciones Científicas, Universidad de Sevilla, Avda. Américo Vespucio 49, Isla de la Cartuja, 41092 Sevilla, Spain
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Alvarez E, Grirrane A, Resa I, del Río D, Rodríguez A, Carmona E. Cyclopentadienyl Zincates: Synthesis and X-ray Studies of Sodium and Potassium Salts of the [Zn(C5H5)3]− and [Zn2(C5H5)5]− Ions. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200603875] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Martín A, Martínez-Espada N, Mena M, Pérez-Redondo A, Yélamos C. Cube-Type Nitrido Complexes Containing Titanium and Zinc/Copper. Inorg Chem 2006; 45:6901-11. [PMID: 16903748 DOI: 10.1021/ic0603407] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several azaheterometallocubane complexes containing [MTi3N4] cores have been prepared by the reaction of [{Ti(eta5-C5Me5)(mu-NH)}3(mu3-N)] (1) with zinc(II) and copper(I) derivatives. The treatment of 1 with zinc dichloride in toluene at room temperature produces the adduct [Cl2Zn{(mu3-NH)3Ti3(eta5-C5Me5)3(mu3-N)}] (2). Attempts to crystallize 2 in dichloromethane gave yellow crystals of the ammonia adduct [(H3N)Cl2Zn{(mu3-NH)Ti3(eta5-C5Me5)3(mu-NH)2(mu3-N)}] (3). The analogous reaction of 1 with alkyl, (trimethylsilyl)cyclopentadienyl, or amido zinc complexes [ZnR2] leads to the cube-type derivatives [RZn{(mu3-N)(mu3-NH)2Ti3(eta5-C5Me5)3(mu3-N)}] (R = CH2SiMe3 (5), CH2Ph (6), Me (7), C5H4SiMe3 (8), N(SiMe3)2 (9)) via RH elimination. The amido complex 9 decomposes in the presence of ambient light to generate the alkyl derivative [{Me3Si(H)N(Me)2SiCH2}Zn{(mu3-N)(mu3-NH)2Ti3(eta5-C5Me5)3(mu3-N)}] (10). The chloride complex 2 reacts with lithium cyclopentadienyl or lithium indenyl reagents to give the cyclopentadienyl or indenyl zinc derivatives [RZn{(mu3-N)(mu3-NH)2Ti3(eta5-C5Me5)3(mu3-N)}] (R = C5H5 (11), C9H7 (12)). Treatment of 1 with copper(I) halides in toluene at room temperature leads to the adducts [XCu{(mu3-NH)3Ti3(eta5-C5Me5)3(mu3-N)}] (X = Cl (13), I (14)). Complex 13 reacts with lithium bis(trimethylsilyl)amido in toluene to give the precipitation of [{Cu(mu4-N)(mu3-NH)2Ti3(eta5-C5Me5)3(mu3-N)}2] (15). Complex 15 is prepared in a higher yield through the reaction of 1 with [{CuN(SiMe3)2}4] in toluene at 150 degrees C. The addition of triphenylphosphane to 15 in toluene produces the single-cube compound [(Ph3P)Cu{(mu3-N)(mu3-NH)2Ti3(eta5-C5Me5)3(mu3-N)}] (16). The X-ray crystal structures of 3, 8, 9, and 15 have been determined.
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Affiliation(s)
- Avelino Martín
- Departamento de Química Inorganica, Universidad de Alcala, 28871 Alcala de Henares-Madrid, Spain
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Ly HV, Forster TD, Maley D, Parvez M, Roesler R. µ-η3:η4-Lithiocene and η3:η3-zincocene incorporating 1,2-diaza-3,5-diborolyl, a cyclopentadienyl analog. Chem Commun (Camb) 2005:4468-70. [PMID: 16136253 DOI: 10.1039/b508152a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A heterocyclic cyclopentadienyl analog containing only one carbon atom in the ring was prepared and a polymeric lithiocene and a monomeric zincocene containing this novel ligand have been isolated and crystallographically characterized.
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Affiliation(s)
- Hanh V Ly
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2L 1M8
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Haaland A, Samdal S, Tverdova NV, Girichev GV, Giricheva NI, Shlykov SA, Garkusha OG, Lokshin BV. The molecular structure of dicyclopentadienylzinc (zincocene) determined by gas electron diffraction and density functional theory calculations: η5,η5, η3,η3 or η5,η1 coordination of the ligand rings? J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00770-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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