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Käfer MG, Eder W, Pecak J, Stöger B, Pignitter M, Veiros LF, Kirchner K. Cr(II) and Cr(III) NCN pincer complexes: synthesis, structure, and catalytic reactivity. MONATSHEFTE FUR CHEMIE 2023; 154:1263-1273. [PMID: 37927401 PMCID: PMC10620270 DOI: 10.1007/s00706-023-03128-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/13/2023] [Indexed: 11/07/2023]
Abstract
The synthesis, characterization, and reactivity of several new Cr(II) and Cr(III) complexes featuring an NCN pincer ligand with an arene backbone connected to amine donors NEt2 and NiPr2 via CH2-linkers is described. Reacting the in situ lithiated ligand precursor N(C-Br)NCH2-Et with [CrCl3(THF)3] resulted in the formation of the Cr(III) complex trans-[Cr(κ3NCN-NCNCH2-Et)(Cl)2(THF)]. Upon reaction of lithiated N(C-Br)NCH2-iPr with a suspension of anhydrous CrCl2, the Cr(II) complex [Cr(κ2NC-NCNCH2-iPr)2] is formed featuring two NCN ligands bound in κ2NC-fashion. In contrast, when lithiated N(C-Br)NCH2-iPr is reacted with a homogeneous solution of anhydrous CrX2 (X = Cl, Br), complexes [Cr(κ3NCN-NCNCH2-iPr)X] are obtained. Treatment of [Cr(κ3NCN-NCNCH2-iPr)Cl] with 1 equiv of PhCH2MgCl and LiCH2SiMe3 afforded the alkyl complexes [Cr(κ3NCN-NCNCH2-iPr)(CH2Ph)] and [Cr(κ3NCN-NCNCH2-iPr)(CH2SiMe3)]. All Cr(II) complexes exhibit effective magnetic moments in the range of 4.7-4.9 µB which is indicative for d4 high spin systems. If a solution of lithiated N(C-Br)NCH2-iPr is treated with CrCl2, followed by addition of an excess of Na[HB(Et)3], the dimeric complex [Cr(κ2NC-NCNCH2-iPr)(μ2-H)]2 is obtained bearing two bridging hydride ligands. [Cr(κ3NCN-NCNCH2-iPr)(CH2SiMe3)] turned out to be catalytically active for the hydrosilylation of ketones at room temperature with a catalyst loading of 1 mol%. X-ray structures of all complexes are presented. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s00706-023-03128-6.
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Affiliation(s)
- Matthias G. Käfer
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Wolfgang Eder
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Jan Pecak
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Berthold Stöger
- X-Ray Center, TU Wien, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
| | - Marc Pignitter
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, Althanstraße 14, 1090 Vienna, Austria
| | - Luis F. Veiros
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049 001 Lisbon, Portugal
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163-AC, 1060 Vienna, Austria
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Pecak J, Eder W, Tomsu G, Stöger B, Pignitter M, Kirchner K. Synthesis and Characterization of Cobalt NCN Pincer Complexes. Eur J Inorg Chem 2021; 2021:4280-4285. [PMID: 34819799 PMCID: PMC8596404 DOI: 10.1002/ejic.202100643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/31/2021] [Indexed: 11/12/2022]
Abstract
A series of cobalt complexes, stabilized by a monoanionic tridentate NCN pincer ligand, was synthetized and characterized. Preparation of the paramagnetic 15 VE complex [Co(NCNCH2-Et)Br] (1) was accomplished by transmetalation of Li[2,6-(Et2NCH2)2C6H3] with CoBr2 in THF. Treatment of this air-sensitive compound with NO gas resulted in the formation of the diamagnetic Co(III) species [Co(NCNCH2-Et)(NO)Br] (2) as confirmed by X-ray diffraction. This complex features a strongly bent NO ligand (Co-N-O∠135.0°). The νNO is observed at 1609 cm-1 which is typical for a bent metal-N-O arrangement. Coordinatively unsaturated 1 could further be treated with pyridine, isocyanides, phosphines and CO to form five-coordinate 17 VE complexes. Oxidation of 1 with CuBr2 led to the formation of the Co(III) complex [Co(NCNCH2-Et)Br2]. Treatment of [Co(NCNCH2-Et)Br2] with TlBF4 as halide scavenger in acetonitrile led to the formation of the cationic octahedral complex [Co(NCNCH2-Et)(MeCN)3](BF4)2. A combination of X-ray crystallography, IR-, NMR- and EPR-spectroscopy as well as DFT/CAS-SCF calculations were used to characterize all compounds.
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Affiliation(s)
- Jan Pecak
- Institute of Applied Synthetic ChemistryVienna University of TechnologyGetreidemarkt 9A-1060WienAustria
| | - Wolfgang Eder
- Institute of Applied Synthetic ChemistryVienna University of TechnologyGetreidemarkt 9A-1060WienAustria
| | - Gerald Tomsu
- Institute of Applied Synthetic ChemistryVienna University of TechnologyGetreidemarkt 9A-1060WienAustria
| | - Berthold Stöger
- X-Ray CentreVienna University of TechnologyGetreidemarkt 91060WienAustria
| | - Marc Pignitter
- Department of Physiological Chemistry, Faculty of ChemistryUniversity of ViennaAlthanstraße 141090WienAustria
| | - Karl Kirchner
- Institute of Applied Synthetic ChemistryVienna University of TechnologyGetreidemarkt 9A-1060WienAustria
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Kai W, Qian H, Liu D, Ye Z. NCN-Pincer palladium complexes immobilized on MCM-41 molecular sieve: Application in α-arylation reactions. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Yugandar S, Acharya A, Ila H. Synthesis of 2,5-Bis(hetero)aryl 4′-Substituted 4,5′-Bisoxazoles via Copper(I)-Catalyzed Domino Reactions of Activated Methylene Isocyanides with 2-Phenyl- and 2-(2-Thienyl)-4-[(aryl/heteroaryl)(methylthio)methylene]oxazol-5(4H)-ones. J Org Chem 2013; 78:3948-60. [DOI: 10.1021/jo400317g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Somaraju Yugandar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur,
Bangalore-50064, India
| | - Anand Acharya
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur,
Bangalore-50064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur,
Bangalore-50064, India
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Ishtaiwi Z, Rüffer T, Hildebrandt A, Awwadi FF, Hahn H, Abylaikhan A, Taher D, Siegert U, Walfort B, Lang H. Allyl‐End‐Grafted Carbosilane Dendrimers Based on 1,4‐Phenylene Units: Synthesis, Reactivity, Structure, and Bonding Motifs. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zakariyya Ishtaiwi
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Tobias Rüffer
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Alexander Hildebrandt
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Firas F. Awwadi
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
| | - Harald Hahn
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Akerke Abylaikhan
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Deeb Taher
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
| | - Uwe Siegert
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Bernhard Walfort
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Heinrich Lang
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
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Albert J, Ariza X, Calvet T, Font-Bardia M, Garcia J, Granell J, Lamela A, López B, Martinez M, Ortega L, Rodriguez A, Santos D. NH2 As a Directing Group: From the Cyclopalladation of Amino Esters to the Preparation of Benzolactams by Palladium(II)-Catalyzed Carbonylation of N-Unprotected Arylethylamines. Organometallics 2013. [DOI: 10.1021/om301140t] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Joan Albert
- Departament de Quimica Inorgànica i Institut de Biomedicina
(IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès 1-11, E-08028-Barcelona, Spain
| | - Xavier Ariza
- Departament de Quimica Orgànica
i Institut de Biomedicina (IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès
1-11, E-08028-Barcelona, Spain
| | - Teresa Calvet
- Unitat de Difracció de Raigs-X, Centre Científic i
Tecnològic de la Universitat de Barcelona, Universitat de Barcelona, Solé i Sabaris 1-3, 08028-Barcelona,
Spain
- Departament de Crystal·lografia,
Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès
s/n, 08028-Barcelona, Spain
| | - Mercé Font-Bardia
- Unitat de Difracció de Raigs-X, Centre Científic i
Tecnològic de la Universitat de Barcelona, Universitat de Barcelona, Solé i Sabaris 1-3, 08028-Barcelona,
Spain
- Departament de Crystal·lografia,
Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès
s/n, 08028-Barcelona, Spain
| | - Jordi Garcia
- Departament de Quimica Orgànica
i Institut de Biomedicina (IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès
1-11, E-08028-Barcelona, Spain
| | - Jaume Granell
- Departament de Quimica Inorgànica i Institut de Biomedicina
(IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès 1-11, E-08028-Barcelona, Spain
| | - Andrea Lamela
- Departament de Quimica Orgànica
i Institut de Biomedicina (IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès
1-11, E-08028-Barcelona, Spain
| | - Blanca López
- Departament de Quimica Orgànica
i Institut de Biomedicina (IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès
1-11, E-08028-Barcelona, Spain
| | - Manuel Martinez
- Departament de Quimica Inorgànica i Institut de Biomedicina
(IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès 1-11, E-08028-Barcelona, Spain
| | - Laura Ortega
- Departament de Quimica Inorgànica i Institut de Biomedicina
(IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès 1-11, E-08028-Barcelona, Spain
| | - Aleix Rodriguez
- Departament de Quimica Orgànica
i Institut de Biomedicina (IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès
1-11, E-08028-Barcelona, Spain
| | - David Santos
- Departament de Quimica Orgànica
i Institut de Biomedicina (IBUB), Facultat de Quimica, Universitat de Barcelona, Martí i Franquès
1-11, E-08028-Barcelona, Spain
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Badetti E, Franc G, Majoral JP, Caminade AM, Sebastián RM, Moreno-Mañas M. Macrocyclic Core Phosphorus Dendrimers Covered on the Surface by N,P Ligands. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001464] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Sladojevich F, Trabocchi A, Guarna A, Dixon DJ. A New Family of Cinchona-Derived Amino Phosphine Precatalysts: Application to the Highly Enantio- and Diastereoselective Silver-Catalyzed Isocyanoacetate Aldol Reaction. J Am Chem Soc 2011; 133:1710-3. [DOI: 10.1021/ja110534g] [Citation(s) in RCA: 198] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Filippo Sladojevich
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Andrea Trabocchi
- Dipartimento di Chimica “U. Schiff”, Università di Firenze, Via della Lastruccia, 13, 50019, Sesto Fiorentino, Italy
| | - Antonio Guarna
- Dipartimento di Chimica “U. Schiff”, Università di Firenze, Via della Lastruccia, 13, 50019, Sesto Fiorentino, Italy
| | - Darren J. Dixon
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
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Lentijo S, Miguel JA, Espinet P. Cyclopalladated Complexes of Perylene Imine: Formation of Acetato-Bridged Dinuclear Complexes with 6,6- and 5,6-Membered Metallacycles. Organometallics 2011. [DOI: 10.1021/om1010929] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio Lentijo
- IU CINQUIMA Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
| | - Jesús A. Miguel
- IU CINQUIMA Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
| | - Pablo Espinet
- IU CINQUIMA Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
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Lentijo S, Miguel JA, Espinet P. Cyclopalladated complexes of perylene imine: mononuclear complexes with five- or six-membered metallacycles. Dalton Trans 2011; 40:7602-9. [DOI: 10.1039/c1dt10598a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Gulevich AV, Zhdanko AG, Orru RVA, Nenajdenko VG. Isocyanoacetate Derivatives: Synthesis, Reactivity, and Application. Chem Rev 2010; 110:5235-331. [DOI: 10.1021/cr900411f] [Citation(s) in RCA: 470] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Anton V. Gulevich
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Alexander G. Zhdanko
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Romano V. A. Orru
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Valentine G. Nenajdenko
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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Li J, Gao Z, Han L, Gao L, Zhang G, Tikkanen W. Formation of a novel hexanuclear ZrIV cage compound with bridging chelating ligand: [(CpZr)6(μ-O2C-C6H2Cl2-2-O)9(OH2)3]·H2O. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.04.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Albert J, Crespo M, Granell J, Rodríguez J, Zafrilla J, Calvet T, Font-Bardia M, Solans X. Cyclopalladation of Schiff Bases from Methyl Esters of α-Amino Acids. Unexpected Activation of the O−Me Bond with Formation of a Bianionic Tridentate Metallacycle. Organometallics 2009. [DOI: 10.1021/om9009153] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joan Albert
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Margarita Crespo
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Jaume Granell
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Judit Rodríguez
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Javier Zafrilla
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Teresa Calvet
- Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Mercè Font-Bardia
- Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Xavier Solans
- Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
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Albert J, D’Andrea L, Bautista J, González A, Granell J, Font-Bardia M, Calvet T. Unexpected Structure of Palladacycles Containing Carboxylated Schiff Bases. Synthesis of Some Water-Soluble Metallacycles. Organometallics 2008. [DOI: 10.1021/om8006807] [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)
- Joan Albert
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Lucía D’Andrea
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Jesús Bautista
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Asensio González
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Jaume Granell
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Mercè Font-Bardia
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Teresa Calvet
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
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Mehendale NC, Lutz M, Spek AL, Klein Gebbink RJ, van Koten G. Self-assembly of para-OH functionalized ECE-metalated pincer complexes. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.06.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Mehendale N, Sietsma JR, de Jong K, van Walree C, Gebbink RJK, van Koten G. PCP- and SCS-Pincer Palladium Complexes Immobilized on Mesoporous Silica: Application in CC Bond Formation Reactions. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200700330] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Stol M, Snelders DJM, Godbole MD, Havenith RWA, Haddleton D, Clarkson G, Lutz M, Spek AL, van Klink GPM, van Koten G. 2,6-Bis(oxazolinyl)phenylnickel(II) Bromide and 2,6-Bis(ketimine)phenylnickel(II) Bromide: Synthesis, Structural Features, and Redox Properties. Organometallics 2007. [DOI: 10.1021/om061055y] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marianne Stol
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Dennis J. M. Snelders
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Meenal D. Godbole
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Remco W. A. Havenith
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - David Haddleton
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Guy Clarkson
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Martin Lutz
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Anthony L. Spek
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Gerard P. M. van Klink
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
| | - Gerard van Koten
- Organic Chemistry and Catalysis, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Leiden Institute of Chemistry, Gorleaus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands, Theoretical Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Chemistry, Warwick University, Coventry CV4 7Al, United Kingdom
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Mehendale NC, Bezemer C, van Walree CA, Klein Gebbink RJ, van Koten G. Novel silica immobilized NCN-pincer palladium(II) and platinum(II) complexes: Application as Lewis acid catalysts. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2006.05.063] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Synthesis, structures and spectroscopic properties of palladium(II) complexes with tridentate piperidyl-containing pincer ligands. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.07.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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van Heerbeek R, Kamer PCJ, van Leeuwen PNMW, Reek JNH. Synthesis of carbosilane dendritic wedges and their use for the construction of dendritic receptors. Org Biomol Chem 2006; 4:211-23. [PMID: 16391763 DOI: 10.1039/b514583j] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A divergent route for the synthesis of carbosilane wedges that contain either a bromine or amine as focal point has been developed. These new building blocks enable the construction of various core-functionalized carbosilane dendrimers. As a typical example carbosilane dendrimers up to the third generation containing a N,N',N''-1,3,5-benzenetricarboxamide core (G1-G3) have been synthesized. This new class of molecules has been studied as host molecules and they have been found to bind protected amino acids as guest molecules via hydrogen bonding interactions. A decrease in the association constants was observed for the higher generation dendritic hosts, which is attributed to the increased steric hindrance around the core where the binding site is located. The binding properties of the dendritic host molecules can be tuned by modifying the binding motif at the core of the carbosilane dendrimers. A higher association constant for N-CBZ-protected glutamic acid 1-methyl ester (5) was observed when the third generation N,N',N''-1,3,5-tris(L-alaninyl)benzenetricarboxamide core-functionalized carbosilane dendrimer (G3') was used as the host molecule compared to G3. Different association constants for the formation of the diastereomeric G3'.L-5(K=295 M(-1)) and G3'.(D-5)(2) (K=236 M(-1)) host-guest complexes were observed, pointing to a small enantioselective recognition effect. The difference between the association constants for the formation of the G3'.(L-5)(2) and G3'.(D-5)(2) host-guest complexes was much more pronounced, K=37 M(-1)versus K=10 M(-1), respectively.
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Affiliation(s)
- Rieko van Heerbeek
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands.
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Camerano JA, Casado MA, Ciriano MA, Lahoz FJ, Oro LA. A Trithiol Protio-Ligand and Its Fixation to the Periphery of a Carbosilane Dendrimer as Scaffolds for Polynuclear Rhodium and Iridium Complexes and Metallodendrimers. Organometallics 2005. [DOI: 10.1021/om0504957] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Camerano JA, Casado MA, Ciriano MA, Tejel C, Oro LA. Peripheral SH-functionalisation of carbosilane dendrimers including the synthesis of the model compound dimethylbis(propanethiol)silane and their interaction with rhodium complexes. Dalton Trans 2005:3092-100. [PMID: 16127505 DOI: 10.1039/b504218f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of the allyl-containing compounds Me2Si(CH2CHCH2)2 and MeSi(CH2CHCH2)3 with thioacetic acid in the presence of AIBN gave Me2Si[(CH2)3SC(O)CH3]2 and MeSi[(CH2)3SC(O)CH3]3, respectively, which were reduced with LiAlH4 to the dithiols Me2Si[(CH2)3SH]2(3) and MeSi[(CH2)3SH]3(4). This protocol was applied to the first and second generations of the doubly and triply-branched carbosilane allyl dendrimers, Si[(CH2)3SiMe(CH2CHCH2)2]4(G(1)allyl-8), Si[(CH2)3SiMe{(CH2)3SiMe(CH2CHCH2)2}2]4(G(2)allyl-16), Si[(CH2)3Si(CH2CHCH2)3]4(G(1)allyl-12), and Si[(CH2)3Si{(CH2)3Si(CH2CHCH2)3}3]4(G(2)allyl-36) to give the corresponding SH functionalised surface dendrimers Si[(CH2)3SiMe(CH2CH2CH2SH)2]4(G(1)SH-8), G(2)SH-16, G(1)SH-12, and G(2)SH-36. Reactions of 3 with [M(acac)(diolefin)](M = Rh, Ir; diolefin = 1,5-cyclooctadiene, 2,5-norbornadiene) gave the compounds of the type [M2(mu-Me2Si[(CH2)3S]2)(diolefin)2]n. These diolefin complexes are octanuclear (n= 4) in solution while the complex [Rh2(mu-Me2Si[(CH2)3S]2)(cod)2]n(5) is tetranuclear in the solid state. The structure of 5, solved by X-ray diffraction methods, consists of a 20-membered metallomacrocycle formed by two dimethylbis(propylthiolate)silane moieties bridging four fragments Rh(cod) in a mu2 fashion through the sulfur atoms. Treatment of [Rh(acac)(CO)2] with 3 gave [Rh2(mu-Me2Si[(CH2)3S]2)(CO)4]n, which is a mixture of tetra (n= 2) and octanuclear (n= 4) complexes in a 2 : 1 ratio in solution, while the related complex [Rh2(mu-Me2Si[(CH2)3S]2)(CO)2(PPh3)2]2 is tetranuclear. Reactions of [Rh(acac)(L-L)](L-L = cod, (CO)2, (CO)(PPh3)) with 4 and the dendrimers G(1)SH-8, G(2)SH-16, and G(1)SH-12, gave microcrystalline solids of formulae [Rh3(MeSi[(CH2)3S]3)(L-L)3]n, [Si[(CH2)3SiMe{(CH2)3SRh(cod)}2]4]n([G(1)Rh(cod)-8]n), [Si[(CH2)3Si{(CH2)3SRh(cod)}3]4]n([G(1)Rh(cod)-12]n), etc., which presumably are tridimensional coordination polymers.
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Affiliation(s)
- José A Camerano
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, C.S.I.C.-Universidad de Zaragoza, Spain
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Soro B, Stoccoro S, Minghetti G, Zucca A, Cinellu MA, Gladiali S, Manassero M, Sansoni M. Synthesis of the First C-2 Cyclopalladated Derivatives of 1,3-Bis(2-pyridyl)benzene. Crystal Structures of [Hg(N-C-N)Cl], [Pd(N-C-N)Cl], and [Pd2(N-C-N)2(μ-OAc)]2[Hg2Cl6]. Catalytic Activity in the Heck Reaction. Organometallics 2004. [DOI: 10.1021/om040102o] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Barbara Soro
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Sergio Stoccoro
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Giovanni Minghetti
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Antonio Zucca
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Maria Agostina Cinellu
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Serafino Gladiali
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Mario Manassero
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
| | - Mirella Sansoni
- Dipartimento di Chimica, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy, and Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano, Centro CNR, Via Venezian 21, I-20133 Milano, Italy
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Slagt MQ, Zwieten DAV, Moerkerk AJ, Gebbink RJK, Koten GV. NCN–pincer palladium complexes with multiple anchoring points for functional groups. Coord Chem Rev 2004. [DOI: 10.1016/j.ccr.2004.08.014] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lang H, Lühmann B, Buschbeck R. Branched and dendritic metallo-carbosiloxanes with OCH2PPh2MLn end-grafted units. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.08.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Synthesis, characterization and spectroscopic studies of cyclometalated platinum(II) complexes containing meta-bis(2-pyridoxy)benzene. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.06.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Crespo M, Granell J, Solans X, Font-Bardia M. Preparation of Metallacycles with Anionic Terdentate [C,N,N‘] Ligands by Intramolecular Oxidative Addition of C−X (X = Br, Cl) Bonds to [Pt(dba)2]. An Unexpected Effect of Chloro Substituents. Organometallics 2002. [DOI: 10.1021/om020532j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Margarita Crespo
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
| | - Jaume Granell
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
| | - Xavier Solans
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
| | - Mercè Font-Bardia
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
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