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Salazar-Díaz JJ, Muñoz-Hernández MA, Rufino-Felipe E, Flores-Alamo M, Ramírez-Solís A, Montiel-Palma V. Bi- and tridentate stannylphosphines and their coordination to low-valent platinum. Dalton Trans 2019; 48:15896-15905. [PMID: 31552976 DOI: 10.1039/c9dt03317c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Semirigid bifunctional tin-substituted o-tolylphosphines of general formulae [Ph2P(o-C6H4CH2)SnR3] (R = Ph, 1; R = Me, 2) and [{Ph2P(o-C6H4CH2)}2SnPh2] (3) were synthesized and isolated in good yields. The new compounds were fully characterized by single-crystal X-ray diffraction and multinuclear solution NMR spectroscopic techniques. The observed J(119Sn,31P) values in solution NMR spectroscopy as well as the PSn distances in the solid state and DFT calculations (B3LYP) on compounds 1 and 3 do not support the existence of intramolecular P → Sn bond interactions in either of the three compounds. 1 and 2 reacted with stoichiometric amounts of tristriphenylphosphine platinum(0) [Pt(PPh3)3] under toluene refluxing conditions leading to formation of Pt(ii) distorted square-planar complexes [Ph2P(o-C6H4CH2)Pt(SnR3)(PPh3)], (R = Ph, 4; R = Me, 5), each bearing a five-membered carbometallated ring resulting from Pt coordination to P and the benzylic C sp3 atom of the ligand architecture rather than from activation of the terminal Sn-C carbon bonds of the phenyl or methyl substituents which would have rendered six-membered rings. Additionally, the fragment SnR3 also binds to the metal centre disposing cis to the cyclometalated carbon atom and to the single remaining PPh3. This carbometallation takes place affecting the integrity of the ligand skeleton. NBO calculations show the Sn fragment coordinates to the metal as X-type stannyl, SnR3. The analogous reaction of [Pt(PPh3)3] towards the stannyldiphosphine 3 leads to the quantitative formation of complex [(Ph2P-o-C6H4CH2)Pt(Ph2P-o-C6H4CH2SnPh3)], 6, which exhibits five- and six-membered metallacycles at the expense of the ligand frame. All compounds were characterized exhaustively by solution spectroscopic measurements and by single crystal X-ray diffraction analysis. DFT computations corroborate the higher stability of the observed products over those resulting from preservation of the ligand backbone.
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Affiliation(s)
- J Jacobo Salazar-Díaz
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico.
| | - Miguel A Muñoz-Hernández
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico. and Department of Chemistry, Mississippi State University, Box 9573, Mississippi State, Mississippi 39762, USA
| | - Ernesto Rufino-Felipe
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico.
| | - Marcos Flores-Alamo
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Alejandro Ramírez-Solís
- Centro de Investigación en Ciencias-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - Virginia Montiel-Palma
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico. and Department of Chemistry, Mississippi State University, Box 9573, Mississippi State, Mississippi 39762, USA
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Geitner FS, Dums JV, Fässler TF. Derivatization of Phosphine Ligands with Bulky Deltahedral Zintl Clusters—Synthesis of Charge Neutral Zwitterionic Tetrel Cluster Compounds [(Ge9{Si(TMS)3}2)tBu2P]M(NHCDipp) (M: Cu, Ag, Au). J Am Chem Soc 2017; 139:11933-11940. [DOI: 10.1021/jacs.7b05834] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Felix S. Geitner
- Department
of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85747 Garching, Germany
- WACKER Institute for Silicon Chemistry, Lichtenbergstraße 4, 85747 Garching, Germany
| | - Jasmin V. Dums
- Department
of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85747 Garching, Germany
| | - Thomas F. Fässler
- Department
of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85747 Garching, Germany
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Wütz T, Diab F, Wesemann L. Synthesis and Coordination Chemistry of a Chelating P–Sn Ligand Based on Stanna‐
closo
‐dodecaborate. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700471] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tobias Wütz
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Fatima Diab
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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Lu Y, Lent C. Self-doping of molecular quantum-dot cellular automata: mixed valence zwitterions. Phys Chem Chem Phys 2011; 13:14928-36. [DOI: 10.1039/c1cp21332f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Stradiotto M, Hesp K, Lundgren R. Zwitterionische Verwandte kationischer Platinmetallkomplexe: Anwendungen in der stöchiometrischen und katalytischen Ï-Bindungsaktivierung. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200904093] [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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Stradiotto M, Hesp K, Lundgren R. Zwitterionic Relatives of Cationic Platinum Group Metal Complexes: Applications in Stoichiometric and Catalytic σ-Bond Activation. Angew Chem Int Ed Engl 2009; 49:494-512. [DOI: 10.1002/anie.200904093] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hesp KD, McDonald R, Ferguson MJ, Schatte G, Stradiotto M. (κ2-P,S)Pt(benzyl) complexes derived from 1/3-PiPr2-2-StBu-indene: facile synthesis of carbanion- and borate-containing zwitterions. Chem Commun (Camb) 2008:5645-7. [DOI: 10.1039/b813421a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- Torben Gädt
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, Tübingen D-72076, Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie der Universität Tübingen, Auf der Morgenstelle 18, Tübingen D-72076, Germany
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Marx T, Wesemann L, Dehnen S, Pantenburg I. Stannaborate transition metal chemistry: ligand properties, reactivity, and density functional theory calculations of platinum and palladium complexes. Chemistry 2001; 7:3025-32. [PMID: 11495429 DOI: 10.1002/1521-3765(20010716)7:14<3025::aid-chem3025>3.0.co;2-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Three stannaborate complexes of platinum(II) and a novel stannoborate palladium(II) derivative have been prepared in excellent yield. The tin transition metal bond is formed through nucleophilic substitution and the resulting complexes [Bu3MeN] [trans-[(Et3P)2Pt(SnB11H11)H]] (6), [trans-[(Et3P)2Pt(SnB11H11)(CNtBu)]] (7), [Bu3MeN]2[trans-[(Et3P)2Pt(SnB11H11)2-(CNtBu)]] (8), and [Bu3MeN][(dppe)-Pd(SnB11H11)Me] (12) (dppe = 1,2-bis-(diphenylphosphanyl)ethane) were characterized by NMR spectroscopy and elemental analysis. In the cases of the zwitterion 7, the pentacoordinated complex 9, the palladium salt 12 and [(triphos)Pt(SnB11H11)] (10) (triphos = 1,1,1-tris(diphenylphosphanylmethyl)ethane), their solid-state structures are determined by X-ray crystal structure analyses. The trans influence of the [SnB11H11] ligand is evaluated from the results of the IR spectroscopy and X-ray crystallographic structures of complexes 6, 7, and 12. The dipole moment of the zwitterion 7 is calculated by density functional theory (DFT) methods. The alignment of the dipole moments of the polar molecules 7 and 12 in the solid state is discussed.
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Affiliation(s)
- T Marx
- Institut für Anorganische Chemie Universität zu Köln, Germany
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