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The Backbone of Success of P,N-Hybrid Ligands: Some Recent Developments. Molecules 2022; 27:molecules27196293. [PMID: 36234830 PMCID: PMC9614609 DOI: 10.3390/molecules27196293] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/21/2022] [Accepted: 09/21/2022] [Indexed: 12/03/2022] Open
Abstract
Organophosphorus ligands are an invaluable family of compounds that continue to underpin important roles in disciplines such as coordination chemistry and catalysis. Their success can routinely be traced back to facile tuneability thus enabling a high degree of control over, for example, electronic and steric properties. Diphosphines, phosphorus compounds bearing two separated PIII donor atoms, are also highly valued and impart their own unique features, for example excellent chelating properties upon metal complexation. In many classical ligands of this type, the backbone connectivity has been based on all carbon spacers only but there is growing interest in embedding other donor atoms such as additional nitrogen (–NH–, –NR–) sites. This review will collate some important examples of ligands in this field, illustrate their role as ligands in coordination chemistry and highlight some of their reactivities and applications. It will be shown that incorporation of a nitrogen-based group can impart unusual reactivities and important catalytic applications.
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Usui R, Sunada Y. Triangular Palladium Cluster from Activation of the Si-Si Bond in a Disilane with Phosphine Pendants. Inorg Chem 2021; 60:15101-15105. [PMID: 34558907 DOI: 10.1021/acs.inorgchem.1c02043] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A disilane that contains two diphenylphosphino moieties, (Ph2PCH2)Ph2Si-SiPh2(CH2PPh), was readily synthesized from the reaction of ClPh2Si-SiPh2Cl with (tmeda)Li(CH2PPh2). Treatment of the thus-obtained disilane with the palladium(0) precursor [Pd(CNtBu)2]3 led to the exclusive formation of a trinuclear palladium cluster in which three palladium atoms are arranged in a triangular fashion. Single-crystal X-ray diffraction analysis of the obtained triangular cluster revealed that novel silylphosphido chelating ligands were formed via a skeletal rearrangement of the ligand framework.
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Affiliation(s)
| | - Yusuke Sunada
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 Japan
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3
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Braunstein P, Danopoulos AA. Transition Metal Chain Complexes Supported by Soft Donor Assembling Ligands. Chem Rev 2021; 121:7346-7397. [PMID: 34080835 DOI: 10.1021/acs.chemrev.0c01197] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The chemistry of discrete molecular chains constituted by metals in low oxidation states, displaying metal-metal proximity and stabilized by suitable metal-bridging, assembling ligands comprising at least one soft donor atom is comprehensively reviewed; complexes with a single (hard or soft) bridging atom (e.g., μ-halide, μ-sulfide, or μ-PR2 etc.) as well as "closed" metal arrays (that fall in the realm of cluster chemistry) are excluded. The focus is on transition metal-based systems, with few excursions to cases combining transition and post-transition elements. Most relevant supporting ligands have neutral C, P, O, or S donor (mainly, N-heterocyclic carbene, phosphine, ether, thioether) or anionic donor (mainly phenyl, ylide, silyl, phosphide, thiolate) groups. A supporting-ligand-based classification of the metal chains is introduced, using as the classifying parameter the number of "bites" (i.e., ligand bridges) subtending each intermetallic separation. The ligands are further grouped according to the number of donor atoms interacting with the metal chain (called denticity in the following) and the column of the Periodic Table to which the set of donor atoms belongs (in ascending order). A complementary metal-based compilation of the complexes discussed is also provided in a concise tabular form.
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Affiliation(s)
- Pierre Braunstein
- CNRS, Chimie UMR 7177, Laboratoire de Chimie de Coordination, Université de Strasbourg, 4 rue Blaise Pascal, 67081 Strasbourg Cedex, France
| | - Andreas A Danopoulos
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece
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Fortuño C, Martín A, Mastrorilli P, Latronico M, Petrelli V, Todisco S. Stable mixed-valence diphenylphosphanido bridged platinum(ii)-platinum(iv) complexes. Dalton Trans 2020; 49:4935-4955. [PMID: 32232305 DOI: 10.1039/d0dt00712a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction between [NnBu4][(C6F5)2PtII(μ-PPh2)2PtIV(C^N)(I)2] (C^N = κ2-N,C-benzoquinolinate, 1) and (i) bidentate S^S, N^S and O^O anionic ligands or (ii) monodentate S- N- or O-based anionic ligands was studied in order to investigate the factors that may guarantee the stability of Pt(ii),Pt(iv) mixed-valence dinuclear phosphanido complexes. While reactions of 1 with S^S or N^S ligands afforded stable Pt(ii),Pt(iv) species of general formula [(C6F5)2PtII(μ-PPh2)2PtIV(C^N)(L^S)]x- [(L^S)(x-1) = 2-mercaptopyrimidinate (pymS-), 2-mercaptopyridinate (pyS-), dimethyldithiocarbamate (Me2NCS2-), ethyl xanthogenate (EtOCS2-) and 1,2-benzenedithiolate (PhS22-)], the reaction of 1 with the O^O ligand sodium acetylacetonate gave several products, and no pure Pt(ii),Pt(iv) complex could be isolated. The reaction of monodentate ligands such as PhS-, OH- or N3- with 1 led to a stable Pt(ii),Pt(iv) complex only in the case of N3-. The reaction with OH- afforded the Pt(ii),Pt(ii) complex [(C6F5)2PtII(μ-PPh2)(κ2-O,P-μ-O-PPh2)PtII(C^N)]- (8) deriving from reductive coupling of a diphenylphosphanide and an O-donor ligand coordinated to the Pt(iv) centre, while the reaction with PhS- produced the unstable Pt(ii),Pt(iv) complex [NnBu4][(C6F5)2PtII(μ-PPh2)2PtIV(C^N)(PhS)2] (11) that evolved in solution to the Pt(ii),Pt(ii) species [NnBu4][(C6F5)2PtII(μ-PPh2)2PtII(C^N)] (9) by elimination of diphenyldisulfide. Thus, the stability of mixed valence Pt(ii),Pt(iv) phosphanide complexes is affected by several concurrent factors, including the chelating effect of the ligands and the type of ligating atoms.
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Affiliation(s)
- Consuelo Fortuño
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain.
| | - Antonio Martín
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain.
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Berkefeld A, Reimann M, Hörner G, Kaupp M, Schubert H. C–P vs C–H Bond Cleavage of Triphenylphosphine at Platinum(0): Mechanism of Formation, Reactivity, Redox Chemistry, and NMR Chemical Shift Calculations of a μ-Phosphanido Diplatinum(II) Platform. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00807] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas Berkefeld
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Marc Reimann
- Institut für Chemie, Theoretische Chemie − Quantenchemie, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Gerald Hörner
- Anorganische Chemie IV, Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Martin Kaupp
- Institut für Chemie, Theoretische Chemie − Quantenchemie, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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Schmitz S, Izarova NV, Besson C, van Leusen J, Kögerler P, Monakhov KY. Ion-Directed Coordinative Polymerization of Copper(II) Pyridyl-Alcohol Complexes Through Thiane Functionalities. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sebastian Schmitz
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Natalya V. Izarova
- Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute (PGI-6); Forschungszentrum Jülich; 52425 Jülich Germany
| | - Claire Besson
- Department of Chemistry; The George Washington University; 800 22nd St NW 20052 Washington DC USA
| | - Jan van Leusen
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Paul Kögerler
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute (PGI-6); Forschungszentrum Jülich; 52425 Jülich Germany
| | - Kirill Yu. Monakhov
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- Present address: Leibniz Institute of Surface Engineering (IOM); Permoserstr. 15 04318 Leipzig Germany
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Ghisolfi A, Fliedel C, de Frémont P, Braunstein P. Mono- and polynuclear Ag(i) complexes of N-functionalized bis(diphenylphosphino)amine DPPA-type ligands: synthesis, solid-state structures and reactivity. Dalton Trans 2017; 46:5571-5586. [DOI: 10.1039/c6dt04755f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
DPPA-type ligands (Ph2P)2N(p-Z)C6H4 (Z = H, SMe, OMe) led to Ag(i) complexes of various nuclearities and an unexpected influence of the para-substituent Z is observed, including for CH2Cl2 activation.
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Affiliation(s)
- Alessio Ghisolfi
- Université de Strasbourg
- CNRS
- CHIMIE UMR 7177
- Laboratoire de Chimie de Coordination
- 67081 Strasbourg
| | - Christophe Fliedel
- Laboratoire de Chimie de Coordination (LCC)
- CNRS – UPR 8241
- F-31077 Toulouse Cedex 4
- France
| | - Pierre de Frémont
- Université de Strasbourg
- CNRS
- CHIMIE UMR 7177
- Equipe de Synthèse
- Réactivité et Catalyse Organométallique
| | - Pierre Braunstein
- Université de Strasbourg
- CNRS
- CHIMIE UMR 7177
- Laboratoire de Chimie de Coordination
- 67081 Strasbourg
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Fliedel C, Ghisolfi A, Braunstein P. Functional Short-Bite Ligands: Synthesis, Coordination Chemistry, and Applications of N-Functionalized Bis(diaryl/dialkylphosphino)amine-type Ligands. Chem Rev 2016; 116:9237-304. [PMID: 27456550 DOI: 10.1021/acs.chemrev.6b00153] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this review is to highlight how the diversity generated by N-substitution in the well-known short-bite ligand bis(diphenylphosphino)amine (DPPA) allows a fine-tuning of the ligand properties and offers a considerable scope for tailoring the properties and applications of their corresponding metal complexes. The various N-substituents include nitrogen-, oxygen-, phosphorus-, sulfur-, halogen-, and silicon-based functionalities and directly N-bound metals. Multiple DPPA-type ligands linked through an organic spacer and N-functionalized DRPA-type ligands, in which the PPh2 substituents are replaced by PR2 (R = alkyl, benzyl) groups, are also discussed. Owing to the considerable diversity of N-functionalized DPPA-type ligands available, the applications of their mono- and polynuclear metal complexes are very diverse and range from homogeneous catalysis with well-defined or in situ generated (pre)catalysts to heterogeneous catalysis and materials science. In particular, sustained interest for DPPA-type ligands has been motivated, at least in part, by their ability to promote selective ethylene tri- or tetramerization in combination with chromium. Ligands and metal complexes where the N-substituent is a pure hydrocarbon group (as opposed to N-functionalization) are outside the scope of this review. However, when possible, a comparison between the catalytic performances of N-functionalized systems with those of their N-substituted analogs will be provided.
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Affiliation(s)
- Christophe Fliedel
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg , 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg, France.,Laboratoire de Chimie de Coordination (LCC), CNRS-UPR 8241, 205 Route de Narbonne, Toulouse F-31077 Cedex 4, France
| | - Alessio Ghisolfi
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg , 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg , 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
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Ai P, Gourlaouen C, Danopoulos AA, Braunstein P. Novel Di- and Trinuclear Palladium Complexes Supported by N,N′-Diphosphanyl NHC Ligands and N,N′-Diphosphanylimidazolium Palladium, Gold, and Mixed-Metal Copper–Gold Complexes. Inorg Chem 2016; 55:1219-29. [DOI: 10.1021/acs.inorgchem.5b02382] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Pengfei Ai
- Laboratoire de Chimie
de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, 67081 Strasbourg Cedex, France
| | - Christophe Gourlaouen
- Laboratoire
de Chimie Quantique, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 1 rue Blaise Pascal, 67008 Strasbourg, France
| | - Andreas A. Danopoulos
- Laboratoire de Chimie
de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, 67081 Strasbourg Cedex, France
- Institute for Advanced Study, USIAS, Université de Strasbourg, 67083 Strasbourg, France
| | - Pierre Braunstein
- Laboratoire de Chimie
de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, 67081 Strasbourg Cedex, France
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Schmitz S, van Leusen J, Ellern A, Kögerler P, Monakhov KY. Thioether-terminated nickel(ii) coordination clusters with {Ni6} horseshoe- and {Ni8} rollercoaster-shaped cores. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00278h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report two polynuclear nickel(ii) compounds whose supramolecular structures are controlled by small inorganic templating anions and π-conjugated Schiff-base ligands (L·SMe3− and HL·SMe2−) with peripheral, structurally exposed methylthioether groups.
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Affiliation(s)
- Sebastian Schmitz
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Jan van Leusen
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | | | - Paul Kögerler
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
- Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute (PGI-6)
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