Synthesis and structure of zwitterionic silylborates and silylzincates with pendant polydonor arms

Hui Li; Fernando Hung-Low; Clemens Krempner

doi:10.1021/om300652n

Synthesis and structure of zwitterionic silylborates and silylzincates with pendant polydonor arms

Hui Li, Fernando Hung-Low, Clemens Krempner

Chemistry and Biochemistry

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Abstract

The synthesis and structure of well-defined zinc- and potassium-containing heterobimetallic zwitterions that have pendant polydonor arms is reported. The zwitterionic complexes [Me ₂ZnSi(SiMe ₂OCH ₂CH ₂OMe) ₃Li] (Li-2), [Cl ₂ZnSi(SiMe ₂OCH ₂CH ₂OMe) ₃K] (K-3), and [I ₂ZnSi(SiMe ₂OCH ₂CH ₂OMe) ₃K] (K-4) were prepared from reactions of [Si(SiMe ₂OCH ₂CH ₂OMe) ₃M] (M = Li, K) (M-1) with ZnCl ₂, ZnI ₂, and ZnMe ₂, respectively. Reaction of K-1 with B(C ₆F ₅) ₃ gave the potassium silyl borate [(C ₆F ₅) ₃BSi(SiMe ₂OCH ₂CH ₂OMe) ₃K] (K-5) in 90% yield. Treatment of 2 equiv of K-1 with ZnCl ₂ afforded the nonzwitterionic zinc silanide Zn(Si(SiMe ₂OCH ₂CH ₂OMe) ₃) ₂ (6), as a liquid, which upon treatment with 1 equiv of ZnMe ₂ and 4 equiv of B(C ₆F ₅) ₃ could be converted into the zwitterionic zinc silyl borate [(C ₆F ₅) ₃BSi(SiMe ₂OCH ₂CH ₂OMe) ₃Zn][MeB(C ₆F ₅) ₃] (7). The structures of the zwitterionic complexes K-4, K-5, and 7 were determined by X-ray crystallography.

Original language	English
Pages (from-to)	7117-7124
Number of pages	8
Journal	Organometallics
Volume	31
Issue number	20
DOIs	https://doi.org/10.1021/om300652n
State	Published - Oct 22 2012

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title = "Synthesis and structure of zwitterionic silylborates and silylzincates with pendant polydonor arms",

abstract = "The synthesis and structure of well-defined zinc- and potassium-containing heterobimetallic zwitterions that have pendant polydonor arms is reported. The zwitterionic complexes [Me 2ZnSi(SiMe 2OCH 2CH 2OMe) 3Li] (Li-2), [Cl 2ZnSi(SiMe 2OCH 2CH 2OMe) 3K] (K-3), and [I 2ZnSi(SiMe 2OCH 2CH 2OMe) 3K] (K-4) were prepared from reactions of [Si(SiMe 2OCH 2CH 2OMe) 3M] (M = Li, K) (M-1) with ZnCl 2, ZnI 2, and ZnMe 2, respectively. Reaction of K-1 with B(C 6F 5) 3 gave the potassium silyl borate [(C 6F 5) 3BSi(SiMe 2OCH 2CH 2OMe) 3K] (K-5) in 90% yield. Treatment of 2 equiv of K-1 with ZnCl 2 afforded the nonzwitterionic zinc silanide Zn(Si(SiMe 2OCH 2CH 2OMe) 3) 2 (6), as a liquid, which upon treatment with 1 equiv of ZnMe 2 and 4 equiv of B(C 6F 5) 3 could be converted into the zwitterionic zinc silyl borate [(C 6F 5) 3BSi(SiMe 2OCH 2CH 2OMe) 3Zn][MeB(C 6F 5) 3] (7). The structures of the zwitterionic complexes K-4, K-5, and 7 were determined by X-ray crystallography.",

author = "Hui Li and Fernando Hung-Low and Clemens Krempner",

year = "2012",

month = oct,

day = "22",

doi = "10.1021/om300652n",

language = "English",

volume = "31",

pages = "7117--7124",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "20",

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TY - JOUR

T1 - Synthesis and structure of zwitterionic silylborates and silylzincates with pendant polydonor arms

AU - Li, Hui

AU - Hung-Low, Fernando

AU - Krempner, Clemens

PY - 2012/10/22

Y1 - 2012/10/22

N2 - The synthesis and structure of well-defined zinc- and potassium-containing heterobimetallic zwitterions that have pendant polydonor arms is reported. The zwitterionic complexes [Me 2ZnSi(SiMe 2OCH 2CH 2OMe) 3Li] (Li-2), [Cl 2ZnSi(SiMe 2OCH 2CH 2OMe) 3K] (K-3), and [I 2ZnSi(SiMe 2OCH 2CH 2OMe) 3K] (K-4) were prepared from reactions of [Si(SiMe 2OCH 2CH 2OMe) 3M] (M = Li, K) (M-1) with ZnCl 2, ZnI 2, and ZnMe 2, respectively. Reaction of K-1 with B(C 6F 5) 3 gave the potassium silyl borate [(C 6F 5) 3BSi(SiMe 2OCH 2CH 2OMe) 3K] (K-5) in 90% yield. Treatment of 2 equiv of K-1 with ZnCl 2 afforded the nonzwitterionic zinc silanide Zn(Si(SiMe 2OCH 2CH 2OMe) 3) 2 (6), as a liquid, which upon treatment with 1 equiv of ZnMe 2 and 4 equiv of B(C 6F 5) 3 could be converted into the zwitterionic zinc silyl borate [(C 6F 5) 3BSi(SiMe 2OCH 2CH 2OMe) 3Zn][MeB(C 6F 5) 3] (7). The structures of the zwitterionic complexes K-4, K-5, and 7 were determined by X-ray crystallography.

AB - The synthesis and structure of well-defined zinc- and potassium-containing heterobimetallic zwitterions that have pendant polydonor arms is reported. The zwitterionic complexes [Me 2ZnSi(SiMe 2OCH 2CH 2OMe) 3Li] (Li-2), [Cl 2ZnSi(SiMe 2OCH 2CH 2OMe) 3K] (K-3), and [I 2ZnSi(SiMe 2OCH 2CH 2OMe) 3K] (K-4) were prepared from reactions of [Si(SiMe 2OCH 2CH 2OMe) 3M] (M = Li, K) (M-1) with ZnCl 2, ZnI 2, and ZnMe 2, respectively. Reaction of K-1 with B(C 6F 5) 3 gave the potassium silyl borate [(C 6F 5) 3BSi(SiMe 2OCH 2CH 2OMe) 3K] (K-5) in 90% yield. Treatment of 2 equiv of K-1 with ZnCl 2 afforded the nonzwitterionic zinc silanide Zn(Si(SiMe 2OCH 2CH 2OMe) 3) 2 (6), as a liquid, which upon treatment with 1 equiv of ZnMe 2 and 4 equiv of B(C 6F 5) 3 could be converted into the zwitterionic zinc silyl borate [(C 6F 5) 3BSi(SiMe 2OCH 2CH 2OMe) 3Zn][MeB(C 6F 5) 3] (7). The structures of the zwitterionic complexes K-4, K-5, and 7 were determined by X-ray crystallography.

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U2 - 10.1021/om300652n

DO - 10.1021/om300652n

M3 - Article

AN - SCOPUS:84867786501

SN - 0276-7333

VL - 31

SP - 7117

EP - 7124

JO - Organometallics

JF - Organometallics

IS - 20

ER -

Synthesis and structure of zwitterionic silylborates and silylzincates with pendant polydonor arms

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