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Zafar M, Subramaniyan V, Tibika F, Tulchinsky Y. Cationic ligands - from monodentate to pincer systems. Chem Commun (Camb) 2024. [PMID: 38920056 DOI: 10.1039/d4cc01489h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
For a long time, the small group of cationic ligands stood out as obscure systems within the general landscape of coordinative chemistry. However, this situation has started to change rapidly during the last decade, with more and more examples of metal-coordinated cationic species being reported. The growing interest in these systems is not only of purely academic nature, but also driven by accumulating evidence of their high catalytic utility. Overcoming the inherently poor coordinating ability of cationic species often required additional structural stabilization. In numerous cases this was realized by functionalizing them with a pair of chelating side-arms, effectively constructing a pincer-type scaffold. This comprehensive review aims to encompass all cationic ligands possessing such pincer architecture reported to date. Herein every cationic species that has ever been embedded in a pincer framework is described in terms of its electronic structure, followed by an in-depth discussion of its donor/acceptor properties, based on computational studies (DFT) and available experimental data (IR, NMR or CV). We then elaborate on how the positive charge of these ligands affects the spectroscopic and redox properties, as well as the reactivity, of their complexes, compared to those of the structurally related neutral ligands. Among other systems discussed, this review also surveys our own contribution to this field, namely, the introduction of sulfonium-based pincer ligands and their complexes, recently reported by our group.
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Affiliation(s)
- Mohammad Zafar
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
| | | | - Françoise Tibika
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
| | - Yuri Tulchinsky
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
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2
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Lin L, Tresp DS, Spasyuk DM, Lalancette RA, Prokopchuk DE. Accessing Ni(0) to Ni(IV) via nickel-carbon-phosphorus bond reorganization. Chem Commun (Camb) 2024; 60:674-677. [PMID: 38050452 DOI: 10.1039/d3cc04687g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Two-electron oxidation of a NiIIPh(PCP) pincer complex initiates phosphine ligand insertion, generating an η6-arylphosphonium moiety coordinated to NiII. The reaction is fully reversible under reducing conditions. X-ray crystallography, NMR/EPR spectroscopy, electrochemistry, and DFT calculations support the proposed Ni-C-P bond reorganization mechanisms, which access oxidation states from Ni0 to NiIV.
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Affiliation(s)
- Lirong Lin
- Department of Chemistry, Rutgers University - Newark, Newark, New Jersey 07102, USA.
| | - David S Tresp
- Department of Chemistry, Rutgers University - Newark, Newark, New Jersey 07102, USA.
| | - Denis M Spasyuk
- Canadian Light Source, Saskatoon, Saskatchewan, S7N2V3, Canada
| | - Roger A Lalancette
- Department of Chemistry, Rutgers University - Newark, Newark, New Jersey 07102, USA.
| | - Demyan E Prokopchuk
- Department of Chemistry, Rutgers University - Newark, Newark, New Jersey 07102, USA.
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3
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Heterotridentate organophosphines in Pt(κ3–P1C1P2)(X), (X=H, OL, NL, CL, Cl, Br or I) and Pt(κ3–P1P2C1)(Cl) derivatives-structural aspects. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Kishino M, Takaoka S, Shibutani Y, Kusumoto S, Nozaki K. Synthesis and reactivity of PC(sp 3)P-pincer iridium complexes bearing a diborylmethyl anion. Dalton Trans 2022; 51:5009-5015. [PMID: 35296874 DOI: 10.1039/d2dt00513a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel PCP-pincer iridium complexes bearing a diborylmethyl anion were synthesized. Strong σ-electron-donation to the metal and significant π-backdonation from the metal to boron atoms at the β-position were observed both experimentally and computationally. H/D exchange of the aromatic C-H bond proceeded smoothly and, in addition, the α-methine-hydrogen between boron atoms was found to be replaced with deuterium in benzene-d6 solution possibly through diborylcarbene metal complexes as intermediates.
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Affiliation(s)
- Masamichi Kishino
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Satoko Takaoka
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Yuki Shibutani
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Shuhei Kusumoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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5
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Maser L, Vogt M, Langer R. Cationic ligands between σ-donation and hydrogen-bridge-bond-stabilisation of ancillary ligands in coinage metal complexes with protonated carbodiphosphoranes. Dalton Trans 2022; 51:17397-17404. [DOI: 10.1039/d2dt02338e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protonated carbodiphosphoranes are demonstrated to act as σ- or hydrogen-bridge-bond donors in a series of copper and silver complexes.
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Affiliation(s)
- Leon Maser
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany
| | - Matthias Vogt
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Robert Langer
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany
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6
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Maser L, Vogt M, Langer R. Facial vs. Meridional Coordination Modes in Re
I
Tricarbonyl Complexes with a Carbodiphosphorane‐based Tridentate Ligand. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Leon Maser
- Institute of Chemistry Faculty of Natural Science II Martin-Luther-University Halle-Wittenberg Kurt-Mothes-Str. 2 06120 Halle (Saale) Germany
| | - Matthias Vogt
- Institute of Chemistry Faculty of Natural Science II Martin-Luther-University Halle-Wittenberg Kurt-Mothes-Str. 2 06120 Halle (Saale) Germany
| | - Robert Langer
- Institute of Chemistry Faculty of Natural Science II Martin-Luther-University Halle-Wittenberg Kurt-Mothes-Str. 2 06120 Halle (Saale) Germany
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7
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Klein M, Sundermeyer J. Modular Design Strategy toward Second-Generation Tridentate Carbodiphosphorane N,C,N Ligands with a Central Four-Electron Carbon Donor Motif and Their Complexes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marius Klein
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Jörg Sundermeyer
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
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8
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Zhang S, Krogman JP. Synthesis and Characterization of Bis(phosphine)carbodicarbene Complexes of Iron, Cobalt, and Nickel. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengwei Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People’s Republic of China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jeremy P. Krogman
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People’s Republic of China
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Xu W, Maser L, Alig L, Langer R. Rhodium carbonyl complexes featuring carbodiphosphorane-based pincer ligands. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.115018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Maser L, Korziniowski P, Langer R. Flexible coordination of carbodiphosphorane-based pincer ligands in chromium(0) carbonyl complexes. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of chromium(0) complexes was obtained by subsequent irradiation of [Cr(CO)6] in the presence of [(Ph2P-CH2-PPh2)2CH]+. Depending on the reaction conditions and the duration of irradiation, complexes with different coordination modes of the potentially tridentate ligand can be isolated. Shorter irradiation times lead to the coordination of the terminal PPh2 groups and the formation of [(κ2P,P′-{Ph2P-CH2-PPh2}CH)Cr(CO)4]+ (2), whereas after longer irradiation duration, the formation of fac- and mer-[(κ3P,C,P′-{Ph2P-CH2-PPh2}CH)Cr(CO)3]+ (3) can be observed. In the presence of base, the neutral complex [(κ3P,C,P′-{Ph2P-CH2-PPh2}C)Cr(CO)3] (4) can be isolated, enabling the analysis of the central CDP group’s net donor strength through the C–O stretching vibration. Finally, the utilization of reductants like potassium graphite lead to the loss of hydrogen and generation of an anionic chromium(0) complex (5). Using quantum chemical methods, the stability of possible isomers is explored.
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Affiliation(s)
- Leon Maser
- Institute of Chemistry, Natural Science Faculty II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120 Halle (Saale), Germany
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Philipp Korziniowski
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Robert Langer
- Institute of Chemistry, Natural Science Faculty II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120 Halle (Saale), Germany
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
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11
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Li Y, Maser L, Alig L, Ke Z, Langer R. From carbones to carbenes and ylides in the coordination sphere of iridium. Dalton Trans 2021; 50:954-959. [PMID: 33351021 DOI: 10.1039/d0dt03942j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The carbodiphosphorane-based iridium pincer complex (2) is demonstrated to rearrange in chlorinated organic solvents under cleavage of a P-C-bond to give a chelating phosphine ylide ligand. A detailed mechanistic investigation reveals that these types of donor groups are prone for P-C-bond cleavage in the coordination sphere of transition metal hydrido complexes. Finally, complex 2 is demonstrated to be an efficient hydrogen-borrowing catalyst.
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Affiliation(s)
- Yinwu Li
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Leon Maser
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany. and Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str., 35032 Marburg, Germany
| | - Lukas Alig
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Zhuofeng Ke
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Robert Langer
- Institute of Chemistry, Faculty of Natural Sciences II, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany. and Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str., 35032 Marburg, Germany
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12
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Zhao L, Chai C, Petz W, Frenking G. Carbones and Carbon Atom as Ligands in Transition Metal Complexes. Molecules 2020; 25:molecules25214943. [PMID: 33114580 PMCID: PMC7663554 DOI: 10.3390/molecules25214943] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/08/2020] [Accepted: 10/15/2020] [Indexed: 01/22/2023] Open
Abstract
This review summarizes experimental and theoretical studies of transition metal complexes with two types of novel metal-carbon bonds. One type features complexes with carbones CL2 as ligands, where the carbon(0) atom has two electron lone pairs which engage in double (σ and π) donation to the metal atom [M]⇇CL2. The second part of this review reports complexes which have a neutral carbon atom C as ligand. Carbido complexes with naked carbon atoms may be considered as endpoint of the series [M]-CR3 → [M]-CR2 → [M]-CR → [M]-C. This review includes some work on uranium and cerium complexes, but it does not present a complete coverage of actinide and lanthanide complexes with carbone or carbide ligands.
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Affiliation(s)
- Lili Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China; (L.Z.); (C.C.)
| | - Chaoqun Chai
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China; (L.Z.); (C.C.)
| | - Wolfgang Petz
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, D-35043 Marburg, Germany
- Correspondence: (W.P.); (G.F.)
| | - Gernot Frenking
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China; (L.Z.); (C.C.)
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, D-35043 Marburg, Germany
- Correspondence: (W.P.); (G.F.)
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13
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Klein M, Demirel N, Schinabeck A, Yersin H, Sundermeyer J. Cu(I) Complexes of Multidentate N,C,N- and P,C,P-Carbodiphosphorane Ligands and Their Photoluminescence. Molecules 2020; 25:E3990. [PMID: 32883039 PMCID: PMC7504792 DOI: 10.3390/molecules25173990] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 12/17/2022] Open
Abstract
A series of dinuclear copper(I) N,C,N- and P,C,P-carbodiphosphorane (CDP) complexes using multidentate ligands CDP(Py)2 (1) and (CDP(CH2PPh2)2 (13) have been isolated and characterized. Detailed structural information was gained by single-crystal XRD analyses of nine representative examples. The common structural motive is the central double ylidic carbon atom with its characteristic two lone pairs involved in the binding of two geminal L-Cu(I) fragments at Cu-Cu distances in the range 2.55-2.67 Å. In order to enhance conformational rigidity within the characteristic Cu-C-Cu triangle, two types of chelating side arms were symmetrically attached to each phosphorus atom: two 2-pyridyl functions in ligand CDP(Py)2 (1) and its dinuclear copper complexes 2-9 and 11, as well as two diphenylphosphinomethylene functions in ligand CDP(CH2PPh2)2 (13) and its di- and mononuclear complexes 14-18. Neutral complexes were typically obtained via the reaction of 1 with Cu(I) species CuCl, CuI, and CuSPh or via the salt elimination reaction of [(CuCl)2(CDP(Py)2] (2) with sodium carbazolate. Cationic Cu(I) complexes were prepared upon treating 1 with two equivalents of [Cu(NCMe)4]PF6, followed by the addition of either two equivalents of an aryl phosphine (PPh3, P(C6H4OMe)3) or one equivalent of bisphosphine ligands bis[(2-diphenylphosphino)phenyl] ether (DPEPhos), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (XantPhos), or 1,1'-bis(diphenyl-phosphino) ferrocene (dppf). For the first time, carbodiphosphorane CDP(CH2PPh2)2 (13) could be isolated upon treating its precursor [CH(dppm)2]Cl (12) with NaNH2 in liquid NH3. A protonated and a deprotonated derivative of ligand 13 were prepared, and their coordination was compared to neutral CDP ligand 13. NMR analysis and DFT calculations reveal that the most stable tautomer of 13 does not show a CDP (or carbone) structure in its uncoordinated base form. For most of the prepared complexes, photoluminescence upon irradiation with UV light at room temperature was observed. Quantum yields (ΦPL) were determined to be 36% for dicationic [(CuPPh3)2(CDP(Py)2)](PF6)2 (4) and 60% for neutral [(CuSPh)2(CDP(CH2PPh2)2] (16).
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Affiliation(s)
- Marius Klein
- Department of Chemistry and Science, Materials Sciences Center, Philipps University of Marburg, 35043 Marburg, Germany; (M.K.); (N.D.)
| | - Nemrud Demirel
- Department of Chemistry and Science, Materials Sciences Center, Philipps University of Marburg, 35043 Marburg, Germany; (M.K.); (N.D.)
| | - Alexander Schinabeck
- Institute for Physical Chemistry, University of Regensburg, 93040 Regensburg, Germany; (A.S.); (H.Y.)
| | - Hartmut Yersin
- Institute for Physical Chemistry, University of Regensburg, 93040 Regensburg, Germany; (A.S.); (H.Y.)
| | - Jörg Sundermeyer
- Department of Chemistry and Science, Materials Sciences Center, Philipps University of Marburg, 35043 Marburg, Germany; (M.K.); (N.D.)
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14
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Böttger S, Gruber M, Münzer JE, Bernard GM, Kneusels NJH, Poggel C, Klein M, Hampel F, Neumüller B, Sundermeyer J, Michaelis VK, Tonner R, Tykwinski RR, Kuzu I. Solvent-Induced Bond-Bending Isomerism in Hexaphenyl Carbodiphosphorane: Decisive Dispersion Interactions in the Solid State. Inorg Chem 2020; 59:12054-12064. [DOI: 10.1021/acs.inorgchem.0c00994] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Silas Böttger
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Marco Gruber
- Interdisciplinary Center of Molecular Materials (ICMM), Department of Chemistry and Pharmacy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Jörn Eike Münzer
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Guy M. Bernard
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Nis-Julian H. Kneusels
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Christina Poggel
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Marius Klein
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Frank Hampel
- Interdisciplinary Center of Molecular Materials (ICMM), Department of Chemistry and Pharmacy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Bernhard Neumüller
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Jörg Sundermeyer
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | | | - Ralf Tonner
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Rik R. Tykwinski
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Istemi Kuzu
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
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15
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Klein M, Xie X, Burghaus O, Sundermeyer J. Synthesis and Characterization of a N,C,N-Carbodiphosphorane Pincer Ligand and Its Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00489] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marius Klein
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Xiulan Xie
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Olaf Burghaus
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Jörg Sundermeyer
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
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16
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Fustier-Boutignon M, Nebra N, Mézailles N. Geminal Dianions Stabilized by Main Group Elements. Chem Rev 2019; 119:8555-8700. [PMID: 31194516 DOI: 10.1021/acs.chemrev.8b00802] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This review is dedicated to the chemistry of stable and isolable species that bear two lone pairs at the same C center, i.e., geminal dianions, stabilized by main group elements. Three cases can thus be considered: the geminal-dilithio derivative, for which the two substituents at C are neutral, the yldiide derivatives, for which one substituent is neutral while the other is charged, and finally the geminal bisylides, for which the two substituents are positively charged. In this review, the syntheses and electronic structures of the geminal dianions are presented, followed by the studies dedicated to their reactivity toward organic substrates and finally to their coordination chemistry and applications.
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Affiliation(s)
- Marie Fustier-Boutignon
- UPS, CNRS, LHFA UMR 5069 , Université de Toulouse , 118 Route de Narbonne , 31062 Toulouse , France
| | - Noel Nebra
- UPS, CNRS, LHFA UMR 5069 , Université de Toulouse , 118 Route de Narbonne , 31062 Toulouse , France
| | - Nicolas Mézailles
- UPS, CNRS, LHFA UMR 5069 , Université de Toulouse , 118 Route de Narbonne , 31062 Toulouse , France
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Vondung L, Jerabek P, Langer R. Ligands Based on Phosphine-Stabilized Aluminum(I), Boron(I), and Carbon(0). Chemistry 2019; 25:3068-3076. [PMID: 30565756 DOI: 10.1002/chem.201805123] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/19/2018] [Indexed: 11/05/2022]
Abstract
A systematic quantum chemical study of the bonding in d6 -transition-metal complexes, containing phosphine-stabilized, main-group-element fragments, (R3 P)2 E, as ligands (E=AlH, BH, CH+ , C), is reported. By using energy decomposition analysis, it is demonstrated that a strong M-E bond is accompanied by weak P-E bonds, and vice versa. Although the Al-M bond is, for example, found to be very strong, the weak Al-P bond suggests that the corresponding metal complexes will not be stable towards phosphine dissociation. The interaction energies for the boron(I)-based ligand are lower, but still higher than those for two-carbon-based ligands. For neutral ligands, electrostatic interactions are the dominating contributions to metal-ligand bonding, whereas for the cationic ligand a significant destabilization, with weak orbital and even weaker electrostatic metal-ligand interactions, is observed. Finally, for iron(II) complexes, it is demonstrated that different reactivity patterns are expected for the four donor groups: the experimentally observed reversible E-H reductive elimination of the borylene-based ligand (E=BH) exhibits significantly higher barriers for the protonated carbodiphosphorane (CDP) ligand (E=CH) and would proceed through different intermediates and transition states. For aluminum, such reaction pathways are not feasible (E=AlH). Moreover, it is demonstrated that the metal hydrido complexes with CDP ligands might not be stable towards reduction and isomerization to a protonated CDP ligand and a reduced metal center.
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Affiliation(s)
- Lisa Vondung
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032, Marburg, Germany.,Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Sciences, Massey University, Albany, New Zealand
| | - Paul Jerabek
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Sciences, Massey University, Albany, New Zealand.,Molecular Theory and Spectroscopy, Max-Planck-Institut für Kohlenforschung, 45470, Mülheim an der Ruhr, Germany
| | - Robert Langer
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032, Marburg, Germany
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18
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Pauer B, Partl GJ, Oberparleiter S, Schuh W, Kopacka H, Wurst K, Peringer P. Crystal structures of [IrCl 2(NHCHPh)((dppm)(C(N 2dppm))-κ 3 P, C, P')]Cl·5.5MeCN and [IrI(NHCHPh)(((dppm)C(N 2))-κ 2 P, C)(dppm-κ 2 P, P')]I(I 3)·0.5I 2·MeOH·0.5CH 2Cl 2: triazene fragmentation in a PCN pincer iridium complex. Acta Crystallogr E Crystallogr Commun 2019; 75:179-184. [PMID: 30800447 PMCID: PMC6362634 DOI: 10.1107/s2056989019000136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 01/03/2019] [Indexed: 12/03/2022]
Abstract
The structure of [IrCl2(C58H51N3P4)]Cl·5.5CH3CN or [IrCl2(NHCHPh)(((dppm)C(N2dppm))-κ 3P,C,P)]Cl·5.5CH3CN [3, dppm = bis-(di-phenyl-phos-phino)methane; systematic name: di-chlorido(1,1,3,3,7,7,9,9-octa-phenyl-4,5-di-aza-1,3λ5,7λ4,9-tetra-phosphanona-3,5-dien-6-yl-κ2 P 1,P 9)-(phenyl-methanimine-κN)iridium(III) chloride aceto-nitrile hemihendeca-solvate], resulting from an oxygen-mediated cleavage of a triazeneyl-idene-phospho-rane ligand producing a diazo-methyl-ene-phospho-rane and a nitrene moiety, which in turn rearrange via a Staudinger reaction and a 1,2-hydride shift to the first title complex, involves a six-coordinate IrIII complex cation coordinated by a facial PCP pincer ligand, a benzaldimine and two chlorido ligands. The pincer system features a five- and a seven-membered ring, with the central divalent carbon of the PCP pincer ligand being connected to a phosphine and a diazo-phospho-rane. The chlorido ligands are positioned trans to the central carbon atom and to the phospho-rus donor of the seven-membered ring of the pincer system, respectively. A chloride ion serves as counter-ion for the monocationic complex. The structure of [IrI(C26H22N2P2)(C26H22P2)(C6H7N)]I(I3)·0.5I2·CH3OH·0.5CH2Cl2 or [IrI(NHCHPh)((dppm)C(N2)-κ 2P,C)(dppm-κ 2P,P')]I(I3)·0.5I2·CH3OH·0.5CH2Cl2 {4, systematic name: (4-diazo-1,1,3,3,-tetra-phenyl-1,3λ4-diphosphabutan-4-yl-κP 1)iodido[methyl-enebis(di-phenyl-phosphine)-κ2 P,P'](phenyl-methanimine-κN)iridium(III) iodide-triiodide-di-chloro-methane-iodine-methanol (2/2/1/1/2)}, accessed via treatment of the triazeneyl-idene-phospho-rane complex [Ir((BnN3)C(dppm)-κ 3P,C,N)(dppm-κ 2P,P')]Cl with hydro-iodic acid, consists of a dicationic six-coordinate IrIII complex, coordinated by a bidentate diazo-methyl-ene-phospho-rane, a benzaldimine, a chelating dppm moiety and an iodido ligand. The phospho-rus atoms of the chelating dppm are trans to the central carbon atom of the diazo-methyl-ene-phospho-rane and the iodide ligand, respectively. Both an iodide and a triiodide moiety function as counter-ions. The aceto-nitrile solvent mol-ecules in 3 are severely disordered in position and occupation. In 4, the I3 - anion is positionally disordered (ratio roughly 1:1), as is the I- anion with a ratio of 9:1. The di-chloro-methane solvent mol-ecule lies near a twofold rotation axis (disorder) and was refined with an occupancy of 0.5. Another disorder occurs for the solvent methanol with a 1:1 ratio.
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Affiliation(s)
- Bettina Pauer
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Gabriel Julian Partl
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Stefan Oberparleiter
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Walter Schuh
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Holger Kopacka
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Paul Peringer
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
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Schlapp-Hackl I, Falschlunger C, Zauner K, Schuh W, Kopacka H, Wurst K, Peringer P. Syntheses and crystal structures of [Ir III{C(CHCO 2Et)(dppm) 2-κ 4 P, C, C', P'}ClH]Cl·2.75CH 2Cl 2 and its derivatives, [Ir III{C(CHCO 2Et)(dppm) 2-κ 4 P, C, C', P'}(CH 2CO 2Et)Cl]Cl·CH 3OH·0.5H 2O, [Ir III{C(CHCO 2Et)(dppm) 2-κ 4 P, C, C', P'}Cl 2]Cl·CH 3OH·2H 2O and [Ir III{C(CHCO 2Et)(dppm) 2-κ 4 P, C, C', P'}(CH 2CO 2Et)(CO)]Cl 2·2CH 2Cl 2·1.5H 2O. Acta Crystallogr E Crystallogr Commun 2019; 75:12-20. [PMID: 30713725 PMCID: PMC6323871 DOI: 10.1107/s2056989018017024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 11/30/2018] [Indexed: 11/21/2022]
Abstract
The common feature of the four iridium(III) salt complexes, (bis-{[(di-phenyl-phosphan-yl)meth-yl]di-phenyl-phosphanyl-idene}(eth-oxy-oxoethanyl-idene)methane-κ4 P,C,C',P')chlorido-hydridoiridium(III) chloride methyl-ene chloride 2.75-solvate (4), (bis-{[(di-phenyl-phosphan-yl)meth-yl]di-phenyl-phosphanyl-idene}(eth-oxy-oxoethanyl-idene)methane-κ4 P,C,C',P')chlorido-(eth-oxy-oxoethanido)iridium(III) chloride-methanol-water (1/1/0.5) (5), (bis-{[(di-phenyl-phosphan-yl)meth-yl]di-phenyl-phosphanyl-idene}(eth-oxy-oxoethanyl-idene)methane-κ4 P,C,C',P')di-chlorido-iridium(III) chloride-methanol-water (1/1/2) (6) and (bis-{[(di-phenyl-phosphan-yl)meth-yl]di-phenyl-phosphanyl-idene}(eth-oxy-oxoethanyl-idene)methane-κ4 P,C,C',P')carbon-yl(eth-oxy-oxoethanide)iridium(III) dichloride-meth-yl-ene chloride-water (1/2/1.5) (7) or in terms of their formulae [Ir(C55H50O2P4)ClH]Cl·2.75CH2Cl2 (4), [Ir(C4H7O2)(C55H50O2P4)Cl]Cl·CH3OH·0.5H2O (5), [Ir(C55H50O2P4)Cl2]Cl·CH3OH·2H2O (6) and [Ir(C4H7O2)(C55H50O2P4)(CO)]Cl2·2CH2Cl2·1.5H2O (7) is a central IrIII atom coordin-ated in a distorted octa-hedral fashion by a PCCP ligand system and two additional residues, such as chlorides, a hydride, a carbonyl or an alkyl unit. Thereby, the PCP pincer ligand system and the residue trans to the carbodi-phospho-rane (CDP) C atom surround the iridium(III) transition metal in the equatorial plane under the formation of two five-membered dissimilar chelate rings [C-CCDP-P (4, 5, 6 and 7) for the first ring: 120.2 (3), 121.9 (5), 111.2 (3) and 121.7 (2) °; for the second ring: 112.1 (3), 113.5 (5), 120.5 (3) and 108.3 (2)°]. A cyclo-propane-like heterocycle is positioned approximately orthogonal (84.21-88.85°) to the equatorial plane, including an alkyl-idene bridge connecting the IrIII atom and the coordinating CDP atom of the PCP subunit. In general, the neutral PCCP ligand system coordinates the metal in a tetra-dentate way via three Lewis acid/base bonds and by an alkyl-idene unit presenting strengthened inter-actions. In all the crystal structures, (disordered) solvent mol-ecules are present in the voids of the packed mol-ecules that inter-act with the positively charged complex and its chloride counter-ion(s) through weak hydrogen bonding.
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Affiliation(s)
- Inge Schlapp-Hackl
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Christoph Falschlunger
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Kathrin Zauner
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Walter Schuh
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Holger Kopacka
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Klaus Wurst
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Paul Peringer
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
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Partl GJ, Nussbaumer F, Schuh W, Kopacka H, Wurst K, Peringer P. Crystal structures of two PCN pincer iridium complexes and one PCP pincer carbodi-phospho-rane iridium inter-mediate: substitution of one phosphine moiety of a carbodi-phospho-rane by an organic azide. Acta Crystallogr E Crystallogr Commun 2019; 75:75-80. [PMID: 30713738 PMCID: PMC6323870 DOI: 10.1107/s2056989018017644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/13/2018] [Indexed: 11/27/2022]
Abstract
The structure of [Ir{(4-Cl-C6H4N3)C(dppm)-κ3 P,C,N}(dppm-κ2 P,P')]Cl·1.5CH2Cl2·0.5C7H8 (C57H48Cl2IrN3P4·1.5CH2Cl2·0.5C7H8) (2), dppm = bis-(di-phenyl-phosphino)methane {systematic name: [7-(4-chloro-phen-yl)-1,1,3,3-tetra-phenyl-5,6,7-tri-aza-κN 7-1,3λ4-diphospha-κP 1-hepta-4,6-dien-4-yl][methyl-ene-bis(di-phenyl-phosphine)-κ2 P,P']iridium(I) chloride-di-chloro-methane-toluene (2/3/1)}, resulting from the reaction of [IrClH{C(dppm)2-κ3 P,C,P)(MeCN)]Cl (1a) with 1-azido-4-chloro-benzene, shows a monocationic five-coordinate IrI complex with a distorted trigonal-bipyramidal geometry. In 2, the iridium centre is coordinated by the neutral triazeneyl-idene-phospho-rane (4-Cl-C6H4N3)C(dppm) acting as a PCN pincer ligand, and a chelating dppm unit. The structure of the coordination compound [IrCl(CN)H(C(dppm)2-κ3 P,C,P)]·CH3CN, (C52H45ClIrNP4·CH3CN) (1b) [systematic name: chlorido-cyanidohydrido(1,1,3,3,5,5,7,7-octa-phenyl-1,3λ5,5λ4,7-tetra-phospha-κ2 P 1,P 7-hept-3-en-4-yl)iridium(III) aceto-nitrile monosolvate], prepared from 1a and KCN, reveals an octa-hedral IrIII central atom with a meridional PCP pincer carbodi-phospho-rane (CDP) ligand; the chloride ligand is located trans to the central carbon of the CDP functionality while the hydrido and cyanido ligands are situated trans to each other. The chiral coordination compound [Ir(CN)((4-Cl-C6H4N3)CH(CH(P(Ph)2)2)-κ3 P,C,N)(dppm-κ2 P,P')]·2CH3OH, (C58H48ClIrN4P4·2CH3OH) (3) (systematic name: {4-[3-(4-chloro-phen-yl)triazenido-κN 3]-1,1,3,3-tetra-phenyl-1,3λ5-diphospha-κP 1-but-2-en-4-yl}cyanido[methyl-enebis(di-phenyl-phosphine)-κ2 P,P']iridium(III) methanol disolvate), formed via prolonged reaction of 1-azido-4-chloro-benzene with 1b, features a six-coordinate IrIII central atom. The iridium centre is coordinated by the dianionic facial PCN pincer ligand [(4-Cl-C6H4N3)CH(CH(P(Ph2)2)2)], a cyanido ligand trans to the central carbon of the PCN pincer ligand and a chelating dppm unit. Complex 2 exhibits a 2:1 positional disorder of the Cl- anion. The CH2Cl2 and C7H8 solvent mol-ecules show occupational disorder, with the toluene mol-ecule exhibiting additional 1:1 positional disorder with some nearly overlying carbon atoms.
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Affiliation(s)
- Gabriel Julian Partl
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Felix Nussbaumer
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Walter Schuh
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Holger Kopacka
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Paul Peringer
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria
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Schlapp-Hackl I, Pauer B, Falschlunger C, Schuh W, Kopacka H, Wurst K, Peringer P. Crystal structures of the [Ir III{C(C 4H 6O 2)(dppm)-κ 3 P, C, O}(dppm)H](CF 3O 3S) 2 and [Ir III{C(C 4H 6O 2)(dppm)-κ 2 P, C}(CO)(dppm)H](CF 3O 3S) 2 phosphorus ylide complexes, generated by a Wittig-type carbon-carbon coupling reaction of a carbodiphospho-rane PCP ligand system. Acta Crystallogr E Crystallogr Commun 2018; 74:1643-1647. [PMID: 30443398 PMCID: PMC6218904 DOI: 10.1107/s205698901801455x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/15/2018] [Indexed: 11/15/2022]
Abstract
The reaction of [IrIII{C(dppm)2-κ3 P,C,P'}ClH(NH3C2)]Cl with ethyl diazo-acetate, a well known C=C coupling reagent, leads to the formation of a C=C unit, accompanied by N2 abstraction, reorganization of a dppm subunit and, considered as a whole, to the transformation of the PCP pincer carbodi-phospho-rane system to a phospho-rus ylide ligand. After removal of the halogenides, the iridium center is stabilized by the carbonyl O atom through the formation of a five-membered chelate ring. A PCO pincer ligand system is thereby generated, which coordinates the iridium(III) atom threefold in a facial manner. The phospho-rus electron-donor atoms and the ylide carbon atom of the resulting [IrIII{C(C4H6O2)(dppm)-κ3 P,C,O}(dppm)H](CF3O3S)2 complex, also termed as [bis-(di-phenyl-phosphan-yl)methane]({[(di-phenyl-phosphan-yl)meth-yl]di-phenyl-phosphanyl-idene}(eth-oxy-oxoethanyl-idene)methanyl-idene-κ3 P,C,O)hydridoiridium(III) bis-(tri-fluoro-methane-sulfonate), are in plane and the hydrido ligand and the carbonyl O atom are located trans to each other, perpendicular to the meridional plane. The addition of carbon monoxide causes a replacement of the carbonyl O atom of the acetate subunit by a carbonyl ligand, thereby creating [bis-(di-phenyl-phosphan-yl)methane]-carbon-yl({[(di-phenyl-phosphan-yl)meth-yl]di-phenyl-phosphanyl-idene}(eth-oxy-oxoethanyl-idene)methanyl-idene-κ2 P,C}hydridoiridium(III) bis-(tri-fluoro-methane-sulfonate)-di-chloro-methane-ethyl acetate (6/2/3) or, more simply, [IrIII{C(C4H6O2)(dppm)-κ2 P,C}(CO)(dppm)H](CF3O3S)2·0.33CH2Cl2·0.5C4H8O2. One tri-fluoro-meth-ane-sulfonate counter-ion of 3 shows positional disorder in a 2:1 ratio. Complex 4 shows pseudo-merohedral twinning (matrix: 0 0 0 0 1 0 1). The di-chloro-methane solvent is disordered over two orientations with occupation factors of 0.5 and 0.166.
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Affiliation(s)
- Inge Schlapp-Hackl
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Bettina Pauer
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Christoph Falschlunger
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Walter Schuh
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Holger Kopacka
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Klaus Wurst
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Paul Peringer
- University of Innsbruck, Faculty of Chemistry and Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
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Maser L, Herritsch J, Langer R. Carbodiphosphorane-based nickel pincer complexes and their (de)protonated analogues: dimerisation, ligand tautomers and proton affinities. Dalton Trans 2018; 47:10544-10552. [PMID: 29468238 DOI: 10.1039/c7dt04930g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity patterns of carbodiphosphoranes (CDPs) as ligands are much less explored than those of isoelectronic analogues. In the current manuscript, we investigate the reactivity of the carbodiphosphorane-based PCP nickel(ii) pincer complex [({dppm}2C)NiCl]Cl (1) towards acids and bases, calculate proton affinities, analyse the bonding situation and tautomeric forms with the aim to evaluate whether CDPs can potentially act as cooperative ligands in catalysis (dppm = 1,1-bis(diphenylphosphino)methane). Our investigations show that different tautomeric forms are stable for the coordinated and the uncoordinated ligand. The protonated CDP-based complex 2 represents a rare example of a cationic donor group binding to a cationic metal centre. The continuous arm-deprotonation of 1 leads to the formation of remarkably stable dimers with Ni-C-P-C-metallacycles. In comparison to corresponding boron and amine-based ligands, the coordinated CDP-group exhibits the lowest proton affinity according to DFT calculations, indicating that coordinated CDP ligands can potentially serve as proton relay in cooperative catalysis.
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Affiliation(s)
- Leon Maser
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany.
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Partl GJ, Nussbaumer F, Schlapp-Hackl I, Schuh W, Kopacka H, Wurst K, Peringer P. Crystal structures of four new iridium complexes, each containing a highly flexible carbodi-phos-phorane PCP pincer ligand. Acta Crystallogr E Crystallogr Commun 2018; 74:846-852. [PMID: 29951243 PMCID: PMC6002832 DOI: 10.1107/s2056989018007569] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/19/2018] [Indexed: 11/25/2022]
Abstract
Compound [Ir(C8H12)(C51H45P4)]Cl2 or [Ir(cod)(CH(dppm)2-κ3P,C,P)]Cl2 (1a), was obtained from [IrCl(cod)]2 and the carbodi-phospho-rane (CDP) salt [CH(dppm)2]Cl [where cod = cyclo-octa-1,5-diene and dppm = bis-(di-phenyl-phosphino)methane]. Treatment of 1a with thallium(I) tri-fluoro-methane-sulfonate [Tl(OTf)] and subsequent crystallization gave complex [Ir(C8H12)(C51H45P4)](OTf)2·CH3CO2C2H5·CH2Cl2 or [Ir(cod)(CH(dppm)2-κ3P,C,P)](OTf)2·CH3CO2C2H5·CH2Cl2 (1b) [systematic name: (cyclo-octa-1,5-diene)(1,1,3,3,5,5,7,7-octa-phenyl-1,7-diphospha-3,5-di-phospho-niaheptan-4-yl)iridium(I) bis-(tri-fluoro-methane-sulfonate)-ethyl acetate-di-chloro-methane (1/1/1)]. This five-coordinate iridium(I) complex cation adopts a trigonal-bipyramidal geometry with the CDP carbon and one cod double bond in axial sites. Compound 1b represents the first example of a non-meridional coordination of the PCP pincer ligand [CH(dppm)2]+ with a P-Ir-P angle of 98.08 (2)°. Compound 2, [IrCl2H(C51H44P4)]·(CH3)2CO or [IrCl2H(C(dppm)2-κ3P,C,P)]·(CH3)2CO [systematic name: di-chlorido-hydrido(1,1,3,3,5,5,7,7-octa-phenyl-1,5λ5,7-triphospha-3-phospho-niahept-4-en-4-yl)iridium(III) acetone monosolvate], crystallizes as an acetone monosolvate. It is a six-coordinate IrIII coordination compound. Here, the PCP pincer ligand is coordinated in a meridional manner; one chlorido ligand is positioned trans to the carbon donor, the remaining two coordination sites being occupied by the second chlorido and a hydrido ligand trans to each other. Complex 3, [IrCl2H(C51H45P4)]Cl·5H2O or [IrCl2H(CH(dppm)2-κ3P,C,P)]Cl·5H2O [systematic name: di-chlorido-hydrido(1,1,3,3,5,5,7,7-octa-phenyl-1,7-diphospha-3,5-di-phospho-niaheptan-4-yl)iridium(III) chloride penta-hydrate], represents the conjugate CH acid of 2. The ligand [CH(dppm)2]+ is coordinated in a meridional manner. In the cationic six-coordinate IrIII complex 4, [IrClH(CO)(C51H44P4)]Cl·2CH3OH·H2O or [IrClH(CO)(C(dppm)2-κ3P,C,P)]Cl·2CH3OH·H2O [systematic name: carbonyl-chlorido-hydrido(1,1,3,3,5,5,7,7-octa-phenyl-1,5λ5,7-triphospha-3-phos-pho-niahept-4-en-4-yl)iridium(III) chloride-methanol-water (1/2/1)], the chlorido ligand is found in the plane defined by the Ir center and the meridional PCP ligand; the H and CO ligands are positioned axially to this plane and trans to each other.
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Affiliation(s)
- Gabriel Julian Partl
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Felix Nussbaumer
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Inge Schlapp-Hackl
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Walter Schuh
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Holger Kopacka
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Paul Peringer
- Institute of General, Inorganic, and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
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Reitsamer C, Schlapp-Hackl I, Partl G, Schuh W, Kopacka H, Wurst K, Peringer P. Crystal structure of an iridium(III) complex of the [C(dppm) 2] PCP pincer ligand system and its conjugate CH acid form. Acta Crystallogr E Crystallogr Commun 2018; 74:620-624. [PMID: 29850078 PMCID: PMC5947474 DOI: 10.1107/s2056989018004905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 03/26/2018] [Indexed: 11/22/2022]
Abstract
The crystal structures of [IrIII(CO)(C(dppm)2-κ3P,C,P′)ClH]Cl and [IrIII(CO)(CH(dppm)2-κ3P,C,P′)ClH]Cl2 have been determined. Both complexes show a slightly distorted octahedral coordinated IrIII centre. The PCP pincer ligand system is arranged in a meridional manner. After the successful creation of the newly designed PCP carbodiphosphorane (CDP) ligand [Reitsamer et al. (2012 ▸). Dalton Trans.41, 3503–3514; Stallinger et al. (2007 ▸). Chem. Commun. pp. 510–512], the treatment of this PCP pincer system with the transition metal iridium and further the analysis of the structures by single-crystal diffraction and by NMR spectroscopy were of major interest. Two different iridium complexes, namely (bis{[(diphenylphosphanyl)methyl]diphenylphosphanylidene}methane-κ3P,C,P′)carbonylchloridohydridoiridium(III) chloride dichloromethane trisolvate, [IrIII(CO){C(dppm)2-κ3P,C,P′}ClH]Cl·3CH2Cl2 (1) and the closely related (bis{[(diphenylphosphanyl)methyl]diphenylphosphanylidene}methanide(1+)-κ3P,C,P′)carbonylchloridohydridoiridium(III) dichloride–hydrochloric acid–water (1/2/5.5), [IrIII(CO){CH(dppm)2-κ3P,C,P′)ClH]Cl}2 (2), have been designed and both complexes show a slightly distorted octahedral coordinated IrIII centre. The PCP pincer ligand system is arranged in a meridional manner, the CO ligand is located trans to the central PCP carbon and a hydride and chloride are located perpendicular above and below the P2C2 plane. With an Ir—CCDP distance of 2.157 (5) Å, an Ir—CO distance of 1.891 (6) Å and a quite short C—O distance of 1.117 (7) Å, complex 1 presents a strong carbonyl bond. Complex 2, the corresponding CH acid of 1, shows an additionally attached proton at the carbodiphosphorane carbon atom located antiperiplanar to the hydride of the metal centre. In comparison with complex 1, the Ir—CCDP distance of 2.207 (3) Å is lengthened and the Ir—C—O values indicate a weaker trans influence of the central carbodiphosphorane carbon atom.
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Puerta Lombardi BM, Brown RM, Gendy C, Chang CY, Chivers T, Roesler R. Nickel and Platinum PCP Pincer Complexes Incorporating an Acyclic Diaminoalkyl Central Moiety Connecting Imidazole or Pyrazole Rings. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Braulio M. Puerta Lombardi
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Rudy M. Brown
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Chris Gendy
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Chia Yun Chang
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Tristram Chivers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Roland Roesler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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Morosaki T, Iijima R, Suzuki T, Wang WW, Nagase S, Fujii T. Synthesis, Electronic Structure, and Reactivities of Two-Sulfur-Stabilized Carbones Exhibiting Four-Electron Donor Ability. Chemistry 2017; 23:8694-8702. [PMID: 28337803 DOI: 10.1002/chem.201700863] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Indexed: 01/06/2023]
Abstract
Bis(sulfane)carbon(0) (BSC; Ph2 S→C←SPh2 (1)) is successfully synthesized by deprotonation of the corresponding protonated salt 1⋅HTfO. The diprotonated salt 1⋅(HTfO)2 as the starting material can be also easily accessed by the deimination of iminosulfane(sulfane)carbon(0) (iSSC)⋅HBF4 . Density functional theory calculations revealed the peculiar electronic structure of 1, which has two lone pairs of electrons at the central carbon atom. The largest proton affinities (PA(1): 297.5 kcal mol-1 ; PA(2): 183.7 kcal mol-1 ) and the highest energy levels of the HOMOs (HOMO: -4.89 eV; HOMO-1: -5.02 eV) for 1 among the two-sulfur-stabilized carbones clearly indicate the strong donor ability of carbon center stabilized by two SII ligands. The donating ability of these lone pairs of electrons is demonstrated by the C-diaurated and C-proton-aurated complexes, which provide the first experimental evidence for two-sulfurstabilized carbones behaving as four-electron donors. Furthermore, the syntheses and application of AgI carbone complexes as carbone transfer agents are also reported.
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Affiliation(s)
- Tomohito Morosaki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Ryo Iijima
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Tsubasa Suzuki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Wei-Wei Wang
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Takayoshi Fujii
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
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Reitsamer C, Hackl I, Schuh W, Kopacka H, Wurst K, Peringer P. Gold(I) and Gold(III) complexes of the [CH(dppm)2]+ and C(dppm)2 PCP pincer ligand systems. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kubo K, Okitsu H, Miwa H, Kume S, Cavell RG, Mizuta T. Carbon(0)-Bridged Pt/Ag Dinuclear and Tetranuclear Complexes Based on a Cyclometalated Pincer Carbodiphosphorane Platform. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00700] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kazuyuki Kubo
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Hiroyuki Okitsu
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Hiroto Miwa
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Shoko Kume
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Ronald G. Cavell
- Department
of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Tsutomu Mizuta
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Morosaki T, Fujii T. Recent Advances in Heteroatom-Stabilized Carbones and Their Metal Complexes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Melník M, Mikuš P. Organophosphines in organoplatinum complexes – Structural aspects of trans -PtP 2 CCl derivatives. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.06.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Molitor S, Schwarz C, Gessner VH. Mono- and Bis-Cyclometalated Palladium Complexes: Synthesis, Characterization, and Catalytic Activity. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sebastian Molitor
- Institut für Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Christopher Schwarz
- Institut für Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Viktoria H. Gessner
- Institut für Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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Morosaki T, Wang WW, Nagase S, Fujii T. Synthesis, Structure, and Reactivities of Iminosulfane- and Phosphane-Stabilized Carbones Exhibiting Four-Electron Donor Ability. Chemistry 2015; 21:15405-11. [PMID: 26471447 DOI: 10.1002/chem.201502166] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Indexed: 11/09/2022]
Abstract
Iminosulfane(phosphane)carbon(0) derivatives (iSPCs; Ar3 P→C←SPh2 (NMe); Ar=Ph (1), 4-MeOC6 H4 (2), 4-(Me2 N)C6 H4 (3)) have been successfully synthesized and the molecular structure of 3 characterized. Carbone 3 is the first thermally and hydrolytically stable carbone stabilized by phosphorus and sulfur ligands. DFT calculations reveal the electronic structures of 1-3, which have two lone pairs of electrons at the carbon center. First and second proton affinity values are theoretically calculated to be in the range of 286.8-301.1 and 189.6-208.3 kcal mol(-1) , respectively. Cyclic voltammetry measurements reveal that the HOMO energy levels follow the order of 3>2>1 and the HOMO of 3 is at a higher energy than those of bis(chalcogenane)carbon(0) (BChCs). The reactivities of these lone pairs of electrons are demonstrated by the C-diaurated and C-proton-aurated complexes. These results are the first experimental evidence of phosphorus- and sulfur-stabilized carbones behaving as four-electron donors. In addition, the reaction of hydrochloric salts of the carbones with Ag2 O gives the corresponding Ag(I) complexes. The resulting silver(I) carbone complexes can be used as carbone transfer agents. This synthetic protocol can also be used for moisture-sensitive carbone species.
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Affiliation(s)
- Tomohito Morosaki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba 275-8575 (Japan)
| | - Wei-Wei Wang
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103 (Japan)
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103 (Japan)
| | - Takayoshi Fujii
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba 275-8575 (Japan).
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Tanase T, Hatada S, Noda S, Takenaka H, Nakamae K, Kure B, Nakajima T. Stepwise Expansion of Pd Chains from Binuclear Palladium(I) Complexes Supported by Tetraphosphine Ligands. Inorg Chem 2015; 54:8298-309. [PMID: 26266547 DOI: 10.1021/acs.inorgchem.5b00950] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of [Pd2(XylNC)6]X2 (X = PF6, BF4) with a linear tetraphosphine, meso-bis[(diphenylphosphinomethyl)phenylphosphino]methane (dpmppm), afforded binuclear Pd(I) complexes, [Pd2(μ-dpmppm)2]X2 ([2]X2), through an asymmetric dipalladium complex, [Pd2(μ-dpmppm)(XylNC)3](2+) ([1](2+)). Complex [2](2+) readily reacted with [Pd(0)(dba)2] (2 equiv) and an excess of isocyanide, RNC (R = 2,6-xylyl (Xyl), tert-butyl ((t)Bu)), to generate an equilibrium mixture of [Pd4(μ-dpmppm)2(RNC)2](2+) ([3'](2+)) + RNC ⇄ [Pd4(μ-dpmppm)2(RNC)3](2+) ([3](2+)), from which [Pd4(μ-dpmppm)2(XylNC)3](2+) ([3a](2+)) and [Pd4(μ-dpmppm)2((t)BuNC)2](2+) ([3b'](2+)) were isolated. Variable-temperature UV-vis and (31)P{(1)H} and (1)H NMR spectroscopic studies on the equilibrium mixtures demonstrated that the tetrapalladium complexes are quite fluxional in the solution state: the symmetric Pd4 complex [3b'](2+) predominantly existed at higher temperatures (>0 °C), and the equilibrium shifted to the asymmetric Pd4 complex [3b](2+) at a low temperature (∼-30 °C). The binding constants were determined by UV-vis titration at 20 °C and revealed that XylNC is of higher affinity to the Pd4 core than (t)BuNC. In addition, both isocyanides exhibited higher affinity to the electron deficient [Pd4(μ-dpmppmF2)2(RNC)2](2+) ([3F'](2+)) than to [Pd4(μ-dpmppm)2(RNC)2](2+) ([3'](2+)) (dpmppmF2 = meso-bis[{di(3,5-difluorophenyl)phosphinomethyl}phenylphosphino]methane). When [2]X2 was treated with [Pd(0)(dba)2] (2 equiv) in the absence of RNC in acetonitrile, linearly ordered octapalladium chains, [Pd8(μ-dpmppm)4(CH3CN)2]X4 ([4]X4: X = PF6, BF4), were generated through a coupling of two {Pd4(μ-dpmppm)2}(2+) fragments. Complex [2](2+) was also proven to be a good precursor for Pd2M2 mixed-metal complexes, yielding [Pd2Cl(Cp*MCl) (Cp*MCl2)(μ-dpmppm)2](2+) (M = Rh ([5](2+)), Ir ([6](2+)), and [Au2Pd2Cl2(dpmppm-H)2](2+) ([7](2+)) by treatment with [Cp*MCl2]2 and [AuCl(PPh3)], respectively. Complex [7](2+) contains an unprecedented PC(sp(3))P pincer ligand with a PCPCPCP backbone, dpmppm-H of deprotonated dpmppm. The present results demonstrated that the binuclear Pd(I) complex [2](2+) was a quite useful starting material to extend the palladium chains and to construct Pd-involved heteromultinuclear systems.
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Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Satoko Hatada
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Sayo Noda
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Hiroe Takenaka
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Kanako Nakamae
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Bunsho Kure
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
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Dube JW, Béland VA, Boyle PD, Ragogna PJ. Utilizing a zwitterionic approach for the synthesis of late transition metal – triphosphenium ion coordination compounds. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Zwitterionic dicoordinate phosphorus(I) compounds (1 and 2), formally a charge neutral triphosphenium ion or phosphanide, are shown to coordinate to a variety of late transition metals. The reaction of the phosphanide proligands with {Rh(COD)Cl}2 results in an equilibrium process that varies as a function of temperature or reaction stoichiometry. Palladium(II) compounds have a tendency to chlorinate the borate backbone while giving dimeric coordination compounds (1Pd) and also a decomposition product (3) where the P(I) atom was replaced. Both “lone pairs” of electrons on phosphorus are utilized simultaneously in the dominant product from the reaction of 1 and [PtMe2(μ-SMe2)]2, while each platinum center ortho-metallated a phenyl substituent on the flanking phosphorus atoms (1Pt). Stable, isolable, and fully characterized dimeric mercury complexes (1Hg and 2Hg) are produced nearly quantitatively from the reaction of the phosphanide proligand with HgCl2. All compounds described were structurally characterized using single crystal X-ray diffraction and represent a growing series of zwitterionic P(I) coordination compounds that cannot be isolated when a cationic triphosphenium ion is used.
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Affiliation(s)
- Jonathan W. Dube
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
| | - Vanessa A. Béland
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
| | - Paul D. Boyle
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
| | - Paul J. Ragogna
- Department of Chemistry and Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street, London, ON N6A 5B7, Canada
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2012. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.02.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Valyaev DA, Bastin S, Utegenov KI, Lugan N, Lavigne G, Ustynyuk NA. A Direct, Modular, and Efficient Construction of the PCP Structural Motif through Coupling of Manganese Carbyne Complexes with Phosphines. Chemistry 2014; 20:2175-8. [DOI: 10.1002/chem.201304239] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Indexed: 11/07/2022]
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Abellán-López A, Chicote MT, Bautista D, Vicente J. From Chelate C,N-Cyclopalladated Oximes to C,N,N′-, C,N,S-, or C,N,C′-Pincer Palladium(II) Complexes by Formation of Oxime Ether Ligands. Organometallics 2012. [DOI: 10.1021/om3007213] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Antonio Abellán-López
- Grupo de Química Organometálica,
Departamento de Química Inorgánica, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - María-Teresa Chicote
- Grupo de Química Organometálica,
Departamento de Química Inorgánica, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Delia Bautista
- SAI, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - José Vicente
- Grupo de Química Organometálica,
Departamento de Química Inorgánica, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
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