Attachment of the Bulky Bidentate Ligand C(SiMe3) 2SiMe2CH2CH2Me2 Si(Me3Si)2C to K, Zn, Sn, and Yb. Crystal Structures of LnMC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3Si)2 CMLn

Colin Eaborn; Michael S. Hill; Peter B. Hitchcock; J. D. Smith; Suobo Zhang; Tomasz Ganicz

Attachment of the Bulky Bidentate Ligand C(SiMe₃) ₂SiMe₂CH₂CH₂Me₂ Si(Me₃Si)₂C to K, Zn, Sn, and Yb. Crystal Structures of L_nMC(SiMe₃)₂SiMe₂CH ₂CH₂Me₂Si(Me₃Si)₂ CML_n

Colin Eaborn, Michael S. Hill, Peter B. Hitchcock, J. D. Smith, Suobo Zhang, Tomasz Ganicz

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18 Citations (SciVal)

Abstract

Reaction of the lithate [Li(THF)₄][CH₂SiMe₂C(SiMe₃) ₂LiC(SiMe₃)₂SiMe₂CH₂] with KO^tBu in THF has given the organopotassium reagent (THF)₂KC(SiMe₃)₂SiMe₂CH ₂CH₂Me₂Si(Me₃-Si) ₂CK(THF)₂, 8, and reaction of HC(SiMe₃)₂SiMe₂CH₂CH ₂Me₂Si(Me₃Si)₂CH with KMe in benzene has given the related ether-free species (C₆H₆)₂KC(SiMe₃) ₂SiMe₂CH₂CH₂Me ₂Si-(Me₃Si)₂CK(C₆H₆) ₂, 7. The structures of 7 and 8 have been confirmed by X-ray studies which indicate that both compounds show K⋯Me contacts in the range 3.3-3.5 Å. The ether-free reagent 7 reacted with YbI₂ in benzene to give the cyclic Yb(II) derivative CH₂SiMe₂C(SiMe₃)₂-YbC(SiMe ₃)₂SiMe₂CH₂, which was found to be somewhat more stable toward Et₂O than the previously studied Yb{C(SiMe₃)₃}₂. Reaction of the lithate [Li(TMEDA)₂]CH₂SiMe₂C(SiMe₃) ₂-LiC(SiMe₃)₂SiMe₂CH₂] (2a) with ZnCl₂ in THF gave a cyclic compound CH₂SiMe₂C(SiMe₃)₂-ZnC(SiMe ₃)₂SiMe₂CH₂, which is stable toward boiling aqueous THF. An X-ray study shows that the angle at Zn is 170°. In contrast, the reactions of 2a with SnCl₄ or Me₂SnCl₂ gave linear species ClX₂SnC(SiMe₃)₂SiMe₂CH ₂CH₂Me₂Si(Me₃Si) ₂CSnX₂Cl, X = Cl or Me, the structures of which were confirmed by single-crystal X-ray diffraction studies.

Original language	English
Pages (from-to)	2342-2348
Number of pages	7
Journal	Organometallics
Volume	18
Issue number	12
Publication status	Published - 7 Jun 1999

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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@article{87b5e245f98647b1b2c971c0df32b080,

title = "Attachment of the Bulky Bidentate Ligand C(SiMe3) 2SiMe2CH2CH2Me2 Si(Me3Si)2C to K, Zn, Sn, and Yb. Crystal Structures of LnMC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3Si)2 CMLn",

abstract = "Reaction of the lithate [Li(THF)4][CH2SiMe2C(SiMe3) 2LiC(SiMe3)2SiMe2CH2] with KOtBu in THF has given the organopotassium reagent (THF)2KC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3-Si) 2CK(THF)2, 8, and reaction of HC(SiMe3)2SiMe2CH2CH 2Me2Si(Me3Si)2CH with KMe in benzene has given the related ether-free species (C6H6)2KC(SiMe3) 2SiMe2CH2CH2Me 2Si-(Me3Si)2CK(C6H6) 2, 7. The structures of 7 and 8 have been confirmed by X-ray studies which indicate that both compounds show K⋯Me contacts in the range 3.3-3.5 {\AA}. The ether-free reagent 7 reacted with YbI2 in benzene to give the cyclic Yb(II) derivative CH2SiMe2C(SiMe3)2-YbC(SiMe 3)2SiMe2CH2, which was found to be somewhat more stable toward Et2O than the previously studied Yb{C(SiMe3)3}2. Reaction of the lithate [Li(TMEDA)2]CH2SiMe2C(SiMe3) 2-LiC(SiMe3)2SiMe2CH2] (2a) with ZnCl2 in THF gave a cyclic compound CH2SiMe2C(SiMe3)2-ZnC(SiMe 3)2SiMe2CH2, which is stable toward boiling aqueous THF. An X-ray study shows that the angle at Zn is 170°. In contrast, the reactions of 2a with SnCl4 or Me2SnCl2 gave linear species ClX2SnC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3Si) 2CSnX2Cl, X = Cl or Me, the structures of which were confirmed by single-crystal X-ray diffraction studies.",

author = "Colin Eaborn and Hill, {Michael S.} and Hitchcock, {Peter B.} and Smith, {J. D.} and Suobo Zhang and Tomasz Ganicz",

year = "1999",

month = jun,

day = "7",

language = "English",

volume = "18",

pages = "2342--2348",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Attachment of the Bulky Bidentate Ligand C(SiMe3) 2SiMe2CH2CH2Me2 Si(Me3Si)2C to K, Zn, Sn, and Yb. Crystal Structures of LnMC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3Si)2 CMLn

AU - Eaborn, Colin

AU - Hill, Michael S.

AU - Hitchcock, Peter B.

AU - Smith, J. D.

AU - Zhang, Suobo

AU - Ganicz, Tomasz

PY - 1999/6/7

Y1 - 1999/6/7

N2 - Reaction of the lithate [Li(THF)4][CH2SiMe2C(SiMe3) 2LiC(SiMe3)2SiMe2CH2] with KOtBu in THF has given the organopotassium reagent (THF)2KC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3-Si) 2CK(THF)2, 8, and reaction of HC(SiMe3)2SiMe2CH2CH 2Me2Si(Me3Si)2CH with KMe in benzene has given the related ether-free species (C6H6)2KC(SiMe3) 2SiMe2CH2CH2Me 2Si-(Me3Si)2CK(C6H6) 2, 7. The structures of 7 and 8 have been confirmed by X-ray studies which indicate that both compounds show K⋯Me contacts in the range 3.3-3.5 Å. The ether-free reagent 7 reacted with YbI2 in benzene to give the cyclic Yb(II) derivative CH2SiMe2C(SiMe3)2-YbC(SiMe 3)2SiMe2CH2, which was found to be somewhat more stable toward Et2O than the previously studied Yb{C(SiMe3)3}2. Reaction of the lithate [Li(TMEDA)2]CH2SiMe2C(SiMe3) 2-LiC(SiMe3)2SiMe2CH2] (2a) with ZnCl2 in THF gave a cyclic compound CH2SiMe2C(SiMe3)2-ZnC(SiMe 3)2SiMe2CH2, which is stable toward boiling aqueous THF. An X-ray study shows that the angle at Zn is 170°. In contrast, the reactions of 2a with SnCl4 or Me2SnCl2 gave linear species ClX2SnC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3Si) 2CSnX2Cl, X = Cl or Me, the structures of which were confirmed by single-crystal X-ray diffraction studies.

AB - Reaction of the lithate [Li(THF)4][CH2SiMe2C(SiMe3) 2LiC(SiMe3)2SiMe2CH2] with KOtBu in THF has given the organopotassium reagent (THF)2KC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3-Si) 2CK(THF)2, 8, and reaction of HC(SiMe3)2SiMe2CH2CH 2Me2Si(Me3Si)2CH with KMe in benzene has given the related ether-free species (C6H6)2KC(SiMe3) 2SiMe2CH2CH2Me 2Si-(Me3Si)2CK(C6H6) 2, 7. The structures of 7 and 8 have been confirmed by X-ray studies which indicate that both compounds show K⋯Me contacts in the range 3.3-3.5 Å. The ether-free reagent 7 reacted with YbI2 in benzene to give the cyclic Yb(II) derivative CH2SiMe2C(SiMe3)2-YbC(SiMe 3)2SiMe2CH2, which was found to be somewhat more stable toward Et2O than the previously studied Yb{C(SiMe3)3}2. Reaction of the lithate [Li(TMEDA)2]CH2SiMe2C(SiMe3) 2-LiC(SiMe3)2SiMe2CH2] (2a) with ZnCl2 in THF gave a cyclic compound CH2SiMe2C(SiMe3)2-ZnC(SiMe 3)2SiMe2CH2, which is stable toward boiling aqueous THF. An X-ray study shows that the angle at Zn is 170°. In contrast, the reactions of 2a with SnCl4 or Me2SnCl2 gave linear species ClX2SnC(SiMe3)2SiMe2CH 2CH2Me2Si(Me3Si) 2CSnX2Cl, X = Cl or Me, the structures of which were confirmed by single-crystal X-ray diffraction studies.

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M3 - Article

AN - SCOPUS:0000087556

SN - 0276-7333

VL - 18

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EP - 2348

JO - Organometallics

JF - Organometallics

IS - 12

ER -

Attachment of the Bulky Bidentate Ligand C(SiMe₃) ₂SiMe₂CH₂CH₂Me₂ Si(Me₃Si)₂C to K, Zn, Sn, and Yb. Crystal Structures of L_nMC(SiMe₃)₂SiMe₂CH ₂CH₂Me₂Si(Me₃Si)₂ CML_n

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