Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C6F5)2(PhC≡CPh)2] and [NBun4][Pt(C6F5) 3(PhC≡CPh)]

Rafael Usón; Juan Forniés; Milagros Tomás; Babil Menjón; Consuelo Fortuño; Alan J. Welch; D. Ewan Smith

doi:10.1039/DT9930000275

Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C₆F₅)₂(PhC≡CPh)₂] and [NBuⁿ₄][Pt(C₆F₅) ₃(PhC≡CPh)]

Rafael Usón^*, Juan Forniés, Milagros Tomás, Babil Menjón, Consuelo Fortuño, Alan J. Welch, D. Ewan Smith

^*Corresponding author for this work

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Abstract

The complexes cis-[Pt(C₆F₅)₂(RC≡CR)₂] (R = Et 1a or Ph 1b) have been prepared by treating cis-[Pt(C₆F₅)₂(thf)₂] (thf = tetrahydrofuran) with the appropriate alkyne. They undergo facile ligand exchange with either cis-[Pt(C₆F₅)₂(thf)₂] or [NBuⁿ₄]₂[Pt(C₆F₅) ₄] giving rise respectively to neutral cis-[Pt(C₆F₅)₂(thf)(RC≡CR)] 2 or anionic [NBuⁿ₄][Pt(C₆F₅) ₃(PhC≡CPh)] 7b mono(η²-alkyne) derivatives. A series of mono(η²-alkyne) complexes of formulae cis-[Pt(C₆F₅)₂L(RC≡CR)] (L = pyridine 3a, 3b; PPh₃ 4a; SbPh₃ 5b; or CO 6a, 6b) and [N(PPh₃)₂][Pt(C₆F₅) ₃(EtC≡CEt)] 7a has also been prepared. None of these complexes except 7b shows ν(C≡C) absorptions in their IR spectra. The molecular structures of complexes 1b and 7b have been established by X-ray diffraction studies: 1b, monoclinic, space group C2/c, a = 19.177(4), b = 8.4971(4), c = 19.790(3) Å, β = 103.297(14)° and Z = 4 (C₂ symmetry imposed); 7b, monoclinic, space group P2₁/c, a = 10.5179(9), b = 17.5834(20), c = 25.369(5) Å, β = 99.376(11)° and Z = 4. Parameters within the acetylene moiety of 1b suggest that the platinum→alkyne π-back bonding is minimal.

Original language	English
Pages (from-to)	275-280
Number of pages	6
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	2
DOIs	https://doi.org/10.1039/DT9930000275
Publication status	Published - 1993

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General Chemistry

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Usón, R., Forniés, J., Tomás, M., Menjón, B., Fortuño, C., Welch, A. J., & Smith, D. E. (1993). Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C₆F₅)₂(PhC≡CPh)₂] and [NBuⁿ₄][Pt(C₆F₅) ₃(PhC≡CPh)]. Journal of the Chemical Society, Dalton Transactions, (2), 275-280. https://doi.org/10.1039/DT9930000275

@article{99a40a8be21641a8ba01a45711820c32,

title = "Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C6F5)2(PhC≡CPh)2] and [NBun4][Pt(C6F5) 3(PhC≡CPh)]",

abstract = "The complexes cis-[Pt(C6F5)2(RC≡CR)2] (R = Et 1a or Ph 1b) have been prepared by treating cis-[Pt(C6F5)2(thf)2] (thf = tetrahydrofuran) with the appropriate alkyne. They undergo facile ligand exchange with either cis-[Pt(C6F5)2(thf)2] or [NBun4]2[Pt(C6F5) 4] giving rise respectively to neutral cis-[Pt(C6F5)2(thf)(RC≡CR)] 2 or anionic [NBun4][Pt(C6F5) 3(PhC≡CPh)] 7b mono(η2-alkyne) derivatives. A series of mono(η2-alkyne) complexes of formulae cis-[Pt(C6F5)2L(RC≡CR)] (L = pyridine 3a, 3b; PPh3 4a; SbPh3 5b; or CO 6a, 6b) and [N(PPh3)2][Pt(C6F5) 3(EtC≡CEt)] 7a has also been prepared. None of these complexes except 7b shows ν(C≡C) absorptions in their IR spectra. The molecular structures of complexes 1b and 7b have been established by X-ray diffraction studies: 1b, monoclinic, space group C2/c, a = 19.177(4), b = 8.4971(4), c = 19.790(3) {\AA}, β = 103.297(14)° and Z = 4 (C2 symmetry imposed); 7b, monoclinic, space group P21/c, a = 10.5179(9), b = 17.5834(20), c = 25.369(5) {\AA}, β = 99.376(11)° and Z = 4. Parameters within the acetylene moiety of 1b suggest that the platinum→alkyne π-back bonding is minimal.",

author = "Rafael Us{\'o}n and Juan Forni{\'e}s and Milagros Tom{\'a}s and Babil Menj{\'o}n and Consuelo Fortu{\~n}o and Welch, {Alan J.} and Smith, {D. Ewan}",

year = "1993",

doi = "10.1039/DT9930000275",

language = "English",

pages = "275--280",

journal = "Journal of the Chemical Society, Dalton Transactions",

issn = "0300-9246",

number = "2",

}

Usón, R, Forniés, J, Tomás, M, Menjón, B, Fortuño, C, Welch, AJ & Smith, DE 1993, 'Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C₆F₅)₂(PhC≡CPh)₂] and [NBuⁿ₄][Pt(C₆F₅) ₃(PhC≡CPh)]', Journal of the Chemical Society, Dalton Transactions, no. 2, pp. 275-280. https://doi.org/10.1039/DT9930000275

Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C₆F₅)₂(PhC≡CPh)₂] and [NBuⁿ₄][Pt(C₆F₅) ₃(PhC≡CPh)]. / Usón, Rafael; Forniés, Juan; Tomás, Milagros et al.
In: Journal of the Chemical Society, Dalton Transactions, No. 2, 1993, p. 275-280.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C6F5)2(PhC≡CPh)2] and [NBun4][Pt(C6F5) 3(PhC≡CPh)]

AU - Usón, Rafael

AU - Forniés, Juan

AU - Tomás, Milagros

AU - Menjón, Babil

AU - Fortuño, Consuelo

AU - Welch, Alan J.

AU - Smith, D. Ewan

PY - 1993

Y1 - 1993

N2 - The complexes cis-[Pt(C6F5)2(RC≡CR)2] (R = Et 1a or Ph 1b) have been prepared by treating cis-[Pt(C6F5)2(thf)2] (thf = tetrahydrofuran) with the appropriate alkyne. They undergo facile ligand exchange with either cis-[Pt(C6F5)2(thf)2] or [NBun4]2[Pt(C6F5) 4] giving rise respectively to neutral cis-[Pt(C6F5)2(thf)(RC≡CR)] 2 or anionic [NBun4][Pt(C6F5) 3(PhC≡CPh)] 7b mono(η2-alkyne) derivatives. A series of mono(η2-alkyne) complexes of formulae cis-[Pt(C6F5)2L(RC≡CR)] (L = pyridine 3a, 3b; PPh3 4a; SbPh3 5b; or CO 6a, 6b) and [N(PPh3)2][Pt(C6F5) 3(EtC≡CEt)] 7a has also been prepared. None of these complexes except 7b shows ν(C≡C) absorptions in their IR spectra. The molecular structures of complexes 1b and 7b have been established by X-ray diffraction studies: 1b, monoclinic, space group C2/c, a = 19.177(4), b = 8.4971(4), c = 19.790(3) Å, β = 103.297(14)° and Z = 4 (C2 symmetry imposed); 7b, monoclinic, space group P21/c, a = 10.5179(9), b = 17.5834(20), c = 25.369(5) Å, β = 99.376(11)° and Z = 4. Parameters within the acetylene moiety of 1b suggest that the platinum→alkyne π-back bonding is minimal.

AB - The complexes cis-[Pt(C6F5)2(RC≡CR)2] (R = Et 1a or Ph 1b) have been prepared by treating cis-[Pt(C6F5)2(thf)2] (thf = tetrahydrofuran) with the appropriate alkyne. They undergo facile ligand exchange with either cis-[Pt(C6F5)2(thf)2] or [NBun4]2[Pt(C6F5) 4] giving rise respectively to neutral cis-[Pt(C6F5)2(thf)(RC≡CR)] 2 or anionic [NBun4][Pt(C6F5) 3(PhC≡CPh)] 7b mono(η2-alkyne) derivatives. A series of mono(η2-alkyne) complexes of formulae cis-[Pt(C6F5)2L(RC≡CR)] (L = pyridine 3a, 3b; PPh3 4a; SbPh3 5b; or CO 6a, 6b) and [N(PPh3)2][Pt(C6F5) 3(EtC≡CEt)] 7a has also been prepared. None of these complexes except 7b shows ν(C≡C) absorptions in their IR spectra. The molecular structures of complexes 1b and 7b have been established by X-ray diffraction studies: 1b, monoclinic, space group C2/c, a = 19.177(4), b = 8.4971(4), c = 19.790(3) Å, β = 103.297(14)° and Z = 4 (C2 symmetry imposed); 7b, monoclinic, space group P21/c, a = 10.5179(9), b = 17.5834(20), c = 25.369(5) Å, β = 99.376(11)° and Z = 4. Parameters within the acetylene moiety of 1b suggest that the platinum→alkyne π-back bonding is minimal.

UR - http://www.scopus.com/inward/record.url?scp=37049085503&partnerID=8YFLogxK

U2 - 10.1039/DT9930000275

DO - 10.1039/DT9930000275

M3 - Article

AN - SCOPUS:37049085503

SN - 0300-9246

SP - 275

EP - 280

JO - Journal of the Chemical Society, Dalton Transactions

JF - Journal of the Chemical Society, Dalton Transactions

IS - 2

ER -

Acetylenes attached to poly(pentafluorophenyl)platinum(II) moieties. Syntheses and molecular structures of cis-[Pt(C₆F₅)₂(PhC≡CPh)₂] and [NBuⁿ₄][Pt(C₆F₅) ₃(PhC≡CPh)]

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