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Karn LM, Britton A, Leznoff DB. Inducing Platinophilic Interactions in [Pt(SCN) 4] 2- Salts by Cation Tuning. Inorg Chem 2024; 63:11977-11985. [PMID: 38885436 DOI: 10.1021/acs.inorgchem.4c00255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
A series of simple [Pt(SCN)4]2- salts with a variety of cations was synthesized and characterized using X-ray crystallography to determine factors that could induce platinophilic interactions between [Pt(SCN)4]2- anions, including cation size and shape, charge, and ability to participate in hydrogen bonding. The salts [N(PPh3)2]2[Pt(SCN)4], [AsPh4]2[Pt(SCN)4], and [Co(1,10-phenanthroline)3][Pt(SCN)4] feature bulky, noncoordinating cations where the [Pt(SCN)4]2- anions are completely separated from each other, with no Pt-Pt interactions present. Salts containing the hydrogen-bonding cations [Co(NH3)6]2[Pt(SCN)4]3 and [Co(en)3]2[Pt(SCN)4]3 (en = 1,2-ethylenediamine) display close Pt-Pt distances, with both compounds exhibiting platinophilic interactions with distances of 3.373(2) and 3.539(8) Å, respectively, the first reported platinophilic interactions with the [Pt(SCN)4]2- unit. [Co(en)3]2[Pt(SCN)4]3 also presents intermolecular chalcogen S···S and Pt···S interactions, resulting in increased dimensionality while also assisting in assembling the platinophilic interaction. The compounds are emissive at 77 K in the solid state, exhibiting a d-d metal-centered transition regardless of whether or not any platinophilic interactions are present. Overall, hydrogen-bonding cations are most likely to promote close proximity of the Pt(II) metal centers and induce the formation of platinophilic interactions in [Pt(SCN)4]2-.
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Affiliation(s)
- Leanna M Karn
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, British Columbia, Canada
| | - Adlih Britton
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, British Columbia, Canada
| | - Daniel B Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, British Columbia, Canada
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Kashina MV, Luzyanin KV, Katlenok E, Novikov AS, Kinzhalov MA. Experimental and Computational Tuning of Metalla-N-Heterocyclic Carbenes at Palladium(II) and Platinum(II) Centers. Dalton Trans 2022; 51:6718-6734. [DOI: 10.1039/d2dt00252c] [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
Palladium(II) and platinum(II) complexes featuring metalla-N-heterocyclic carbenes (7–12) were synthesised via metal-mediated coupling between equimolar cis-[MCl2(CNR)2] (R = 2,6-Me2C6H3 (Xyl), 2,4,6-Me3C6H3 (Mes)] and 2-aminopyridine or 2-aminopyrazine. Thiocyanate complexes 13–18 with...
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Saxena P, Thomas JM, Sivasankar C, Thirupathi N. Syntheses and structural aspects of six-membered palladacyclic complexes derived fromN,N′,N′′-triarylguanidines with N- or S-thiocyanate ligands. NEW J CHEM 2019. [DOI: 10.1039/c8nj04167a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Linkage isomers8·2/3PhMe and9·MeOH were synthesized, isolated and structurally characterized by SCXRD and the role of solvent of crystallization in the formation of these linkage isomers identified.
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Affiliation(s)
- Priya Saxena
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Jisha Mary Thomas
- Department of Chemistry
- School of Physical, Chemical and Applied Sciences
- Pondicherry University
- Puducherry 605 014
- India
| | - Chinnappan Sivasankar
- Department of Chemistry
- School of Physical, Chemical and Applied Sciences
- Pondicherry University
- Puducherry 605 014
- India
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Jochim A, Rams M, Neumann T, Wellm C, Reinsch H, Wójtowicz GM, Näther C. Structural Diversity in Ni Chain Coordination Polymers: Synthesis, Structures, Isomerism and Magnetism. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800939] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Aleksej Jochim
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Michał Rams
- Institute of Physics; Jagiellonian University; Łojasiewicza 11 30-348 Kraków Poland
| | - Tristan Neumann
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Carsten Wellm
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Helge Reinsch
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | | | - Christian Näther
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
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Fehlhammer WP, Beck W. Azide Chemistry - An Inorganic Perspective, Part II[‡][3+2]-Cycloaddition Reactions of Metal Azides and Related Systems. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500165] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Mendoza MDLA, Bernès S, Mendoza-Díaz G. Coordination of bis-(pyrazol-1-yl)amine to palladium(II): influence of the co-ligands and counter-ions on the mol-ecular and crystal structures. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2015; 71:22-7. [PMID: 25705441 PMCID: PMC4331852 DOI: 10.1107/s205698901402595x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 11/26/2014] [Indexed: 11/10/2022]
Abstract
The structures of a series of complexes with general formula n[Pd(pza)X]Y·mH2O (n = 1, 2; X = Cl, Br, I, N3, NCS; Y = NO3, I, N3, [Pd(SCN)4]; m = 0, 0.5, 1) have been determined, where pza is the tridentate ligand bis-[2-(3,5-di-methyl-pyrazol-1-yl)eth-yl]amine, C14H23N5. In all complexes, {bis-[2-(3,5-di-methyl-pyrazol-1-yl-κN (2))eth-yl]amine-κN}chlorido-palladium nitrate, [Pd(pza)Cl]NO3, (1), {bis-[2-(3,5-di-methyl-pyrazol-1-yl-κN (2))eth-yl]amine-κN}bromido-palladium nitrate, [Pd(pza)Br]NO3, (2), {bis-[2-(3,5-di-methyl-pyrazol-1-yl-κN (2))eth-yl]amine-κN}iodido-palladium iodide hemihydrate, [Pd(pza)I]I·0.5H2O, (3), azido{bis-[2-(3,5-di-methyl-pyrazol-1-yl-κN (2))eth-yl]amine-κN}palladium azide monohydrate, [Pd(pza)N3]N3·H2O, (4), and bis-[{bis-[2-(3,5-di-methyl-pyrazol-1-yl-κN (2))eth-yl]amine-κN}(thio-cyanato-κN)palladium] tetra-kis-(thio-cyanato-κS)palladate, [Pd(pza)NCS]2[Pd(SCN)4], (5), the [Pd(pza)X](+) complex cation displays a square-planar coordination geometry, and the pza ligand is twisted, approximating twofold rotation symmetry. Although the pza ligand is found with the same conformation along the series, the dihedral angle between pyrazole rings depends on the co-ligand X. This angle span the range 79.0 (3)-88.6 (1)° for the studied complexes. In (3), two complex cations, two I(-) anions and one water mol-ecule of crystallization are present in the asymmetric unit. In (5), the central amine group of pza is disordered over two positions [occupancy ratio 0.770 (18):0.230 (18)]. The complex [Pd(SCN)4](2-) anion of this compound exhibits inversion symmetry and shows the Pd(2+) transition metal cation likewise in a square-planar coordination environment. Compound (5) is also a rare occurrence of a non-polymeric compound in which the pseudohalide ligand NCS(-) behaves both as thio-cyanate and iso-thio-cyanate, i.e. is coordinating either through the N atom (in the cation) or the S atom (in the anion).
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Affiliation(s)
- María de Los Angeles Mendoza
- Departamento de Ingenierías Química Electrónica y Biomédica, División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, León, Guanajuato 37150, Mexico
| | - Sylvain Bernès
- DEP Facultad de Ciencias Químicas, UANL, Guerrero y Progreso S/N, Col. Treviño, 64570 Monterrey, N.L., Mexico
| | - Guillermo Mendoza-Díaz
- Departamento de Ingenierías Química Electrónica y Biomédica, División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, León, Guanajuato 37150, Mexico
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Mondragón A, Flores-Alamo M, Martínez-Alanis PR, Aullón G, Ugalde-Saldívar VM, Castillo I. Electrocatalytic Proton Reduction by Dimeric Nickel Complex of a Sterically Demanding Pincer-type NS2 Aminobis(thiophenolate) Ligand. Inorg Chem 2014; 54:619-27. [DOI: 10.1021/ic502547y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | | | | | - Gabriel Aullón
- Departament de Química Inorgànica and Institut de Química
Teòrica i Computacional, Universitat de Barcelona, Martí
i Franquès 1-11, 08028 Barcelona, Spain
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Nguyen MH, Nguyen VH, Yip JHK. Sequence-Specific Synthesis of Platinum-Conjugated Trichromophoric Energy Cascades of Anthracene, Tetracene, and Pentacene and Fluorescent “Black Chromophores”. Organometallics 2013. [DOI: 10.1021/om400578t] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Minh-Hai Nguyen
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543
| | - Van Ha Nguyen
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543
| | - John H. K. Yip
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543
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Kim H, Lee J, Kim Y, Nu Zheng Z, Lee SW. (π‐Allyl)Pd Complexes Containing N‐Heterocyclic Carbene and Pseudohalogen Ligands – Synthesis, Reactivity toward Organic Isothiocyanates and Isocyanides, and Their Catalytic Activity in Suzuki–Miyaura Cross‐Couplings. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300608] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hyun‐Kyung Kim
- Department of Chemistry, Kangnung‐Wonju National University, Gangneung 210‐702, Korea, http://https://chemistry.gwnu.ac.kr/
| | - Jung‐Hyun Lee
- Department of Chemistry, Kangnung‐Wonju National University, Gangneung 210‐702, Korea, http://https://chemistry.gwnu.ac.kr/
| | - Yong‐Joo Kim
- Department of Chemistry, Kangnung‐Wonju National University, Gangneung 210‐702, Korea, http://https://chemistry.gwnu.ac.kr/
| | - Zhen Nu Zheng
- Department of Chemistry, Sungkyunkwan University, Natural Science Campus, Suwon 440‐746, Korea
| | - Soon W. Lee
- Department of Chemistry, Sungkyunkwan University, Natural Science Campus, Suwon 440‐746, Korea
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10
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Jiang Y, Song D, Wang Y, Wan X, Li Y, Liu D, Song X, Verpoort F, Chang X. Reactivity of μ-azido and μ-thiocyanato bridged Schiff base palladacycles toward aromatic N-heterocycles and phosphines. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.10.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Lentijo S, Aullón G, Miguel JA, Espinet P. Highly fluorescent complexes with gold, palladium or platinum linked to perylene through a tetrafluorophenyl group. Dalton Trans 2013; 42:6353-65. [DOI: 10.1039/c3dt32843k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Nguyen MH, Yip JHK. Pushing Pentacene-Based Fluorescence to the Near-Infrared Region by Platination. Organometallics 2011. [DOI: 10.1021/om2005645] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Minh-Hai Nguyen
- Department of Chemistry, National University of Singapore, 3
Science 3 Drive, Singapore, 117543
| | - John H. K. Yip
- Department of Chemistry, National University of Singapore, 3
Science 3 Drive, Singapore, 117543
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13
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Canovese L, Visentin F, Levi C, Santo C, Bertolasi V. Facile synthesis and reactivity study of mixed phosphane–isocyanide Pd(II) and Pd(0) complexes. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.09.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Jiang Y, Guo Y, Zhu X, Song D, Wang Y, Song X, Verpoort F, Chang X. Facile synthesis and characterization of μ-chloro, azido, thiocyanato bridged cyclometallated Pd(II) containing Schiff-base ligands. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Jothibasu R, Huang KW, Huynh HV. Synthesis of cis- and trans-Diisothiocyanato−Bis(NHC) Complexes of Nickel(II) and Applications in the Kumada−Corriu Reaction. Organometallics 2010. [DOI: 10.1021/om100241v] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ramasamy Jothibasu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Chemical & Life Sciences and Engineering, 4700 King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Han Vinh Huynh
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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16
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Díez Á, Forniés J, Fuertes S, Lalinde E, Larraz C, López JA, Martín A, Moreno MT, Sicilia V. Synthesis and Luminescence of Cyclometalated Compounds with Nitrile and Isocyanide Ligands. Organometallics 2009. [DOI: 10.1021/om800845c] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Álvaro Díez
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - Juan Forniés
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - Sara Fuertes
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - Elena Lalinde
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - Carmen Larraz
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - José A. López
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - Antonio Martín
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - M. Teresa Moreno
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
| | - Violeta Sicilia
- Departamento de Química, Grupo de Síntesis Química de La Rioja, UA-CSIC, Universidad de La Rioja, 26006, Logroño, Spain, Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Facultad de Ciencias, Universidad de Zaragoza-CSIC, Plaza. S. Francisco s/n 50009 Zaragoza, Spain, and Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad de Zaragoza-CSIC, Campus Universitario del Actur,
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Polymorphism and reactivity of [Ni(pyridine)4(NCS)2]: Two new supramolecular isomers and one macro-ionic derivative. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.08.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Briceño A, Leal D, Atencio R, Díaz de Delgado G. Supramolecular isomerism in multivalent metal-templated assemblies with topochemical influence in the regioselective synthesis of tetrakis(2-pyridyl)cyclobutane isomers. Chem Commun (Camb) 2006:3534-6. [PMID: 16921436 DOI: 10.1039/b606673a] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented example of supramolecular isomerism based on 2D hydrogen-bonded multi-component networks that leads to the preparation of different photoproducts via a topochemical transformation is reported.
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Affiliation(s)
- Alexander Briceño
- Instituto Venezolano de Investigaciones Científicas (IVIC), Apartado 21827, Caracas 1020-A, Venezuela.
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Cadierno V, Díez J, García-Alvarez J, Gimeno J, Nebra N, Rubio-García J. Synthesis and reactivity studies of palladium(ii) complexes containing the N-phosphorylated iminophosphorane-phosphine ligands Ph2PCH2P{NP(O)(OR)2}Ph2(R = Et, Ph): application to the catalytic synthesis of 2,3-dimethylfuran. Dalton Trans 2006:5593-604. [PMID: 17225896 DOI: 10.1039/b609359k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of [PdCl2(COD)] with 1 equiv. of the iminophosphorane-phosphine ligands Ph2PCH2P{=NP(=O)(OR)2}Ph2 (R=Et, Ph) lead to the novel Pd(II) derivatives cis-[PdCl2(kappa2-(P,N)-Ph2PCH2P{=NP(=O)(OR)2}Ph2)] (R=Et, Ph). Pd-N bond cleavage readily takes place upon treatment of these species with a variety of two-electron donor ligands. By this way, complexes cis-[PdCl2(kappa1-(P)-Ph2PCH2P{=NP(=O)(OR)2}Ph2)(L)] (R=Et, L=CNtBu, CN-2,6-C6H3Me2, py, P(OMe)3, P(OEt)3; R=Ph, L=CNtBu, CN-2,6-C6H3Me2, py, P(OMe)3, P(OEt)3) have been synthesized in high yields. The addition of two equivalents of ligands to dichloromethane solutions of [PdCl2(COD)] results in the formation of complexes trans-[PdCl2(kappa1-(P)-Ph2PCH2P{=NP(=O)(OR)2}Ph2)2] (R=Et, Ph), which can be converted into the dicationic species [Pd(Ph2PCH2P{=NP(=O)(OR)2}Ph2)2][SbF6]2 (R=Et, Ph) by treatment with AgSbF6. Complex also reacts with CNtBu to afford trans-[Pd(kappa1(P)-Ph2PCH2P{=NP(=O)(OPh)2}Ph2)2(CNtBu)2][SbF6]2. The structures of and have been determined by single-crystal X-ray diffraction methods. In addition, the ability of these Pd(II) complexes to promote the catalytic cycloisomerization of (Z)-3-methylpent-2-en-4-yn-1-ol into 2,3-dimethylfuran has also been studied.
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Affiliation(s)
- Victorio Cadierno
- Departamento de Química Orgánica e Inorgánica, Instituto Universitario de Química Organometálica Enrique Moles (Unidad Asociada al CSIC), Facultad de Química, Universidad de Oviedo, E-33071, Oviedo, Spain.
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