Reactivity of pyridyl-1-azaallyl germanium(II) chloride: Synthesis of novel lithium germinate [{(PhC≡C)3Ge}3GeLi(Et 2O)3] and Ge(II)-M(I) (M = Cu and Au) adducts

Wing Por Leung; Cheuk Wai So; Kim Hung Chong; Kwok Wai Kan; Hoi Shan Chan; Thomas C.W. Mak

doi:10.1021/om060032g

Reactivity of pyridyl-1-azaallyl germanium(II) chloride: Synthesis of novel lithium germinate [{(PhC≡C)₃Ge}₃GeLi(Et ₂O)₃] and Ge(II)-M(I) (M = Cu and Au) adducts

Wing Por Leung^*, Cheuk Wai So, Kim Hung Chong, Kwok Wai Kan, Hoi Shan Chan, Thomas C.W. Mak

^*Corresponding author for this work

Chinese University of Hong Kong

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

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Abstract

The reaction of [Ge{N(SiMe₃)C(Ph)C(SiMe₃)(C ₅H₄N-2)}Cl] (1) with LiBu^t or LiC≡CPh in Et₂O afforded substituted products [Ge(R){N(SiMe₃)C(Ph) C(SiMe₃)(C₅H₄N-2)}] [R = Bu^t (2) or C≡CPh (3)], respectively. However, the one-pot reaction of 1 with PhC≡CH and BuⁿLi in Et₂O afforded lithium germinate [{(PhC≡C)₃Ge}₃GeLi(Et₂O)₃] (4). Compound 1 can also undergo ligand transfer reaction with LiAlH ₄, to give [AlH{N(SiMe₃)C(Ph)C(SiMe₃)(C ₅H₄N-2)}₂] (5). Treatment of 1 with excess NaBH₄ in THF afforded germanium(II) hydride-borane adduct [Ge(BH ₃){N(SiMe₃)C(Ph)C(SiMe₃)(C₅H ₄N-2)}H] (6). The reaction of 1 with MI (M = Cu and Au) gave the first examples of Ge(II)-M(I) adducts [Ge-(CuI){N(SiMe₃)C(Ph) C(SiMe₃)(C₅H₄N-2)}Cl]₄ (7) and [Ge(AuI){N(SiMe₃)C(Ph)C(SiMe₃)(C₅H ₄N-2)}-Cl] (8). Compounds 2-8 have been characterized by X-ray analysis.

Original language	English
Pages (from-to)	2851-2858
Number of pages	8
Journal	Organometallics
Volume	25
Issue number	11
DOIs	https://doi.org/10.1021/om060032g
Publication status	Published - May 22 2006
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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@article{4a837c09f9f444d1b78ee0564bcec51f,

title = "Reactivity of pyridyl-1-azaallyl germanium(II) chloride: Synthesis of novel lithium germinate [{(PhC≡C)3Ge}3GeLi(Et 2O)3] and Ge(II)-M(I) (M = Cu and Au) adducts",

abstract = "The reaction of [Ge{N(SiMe3)C(Ph)C(SiMe3)(C 5H4N-2)}Cl] (1) with LiBut or LiC≡CPh in Et2O afforded substituted products [Ge(R){N(SiMe3)C(Ph) C(SiMe3)(C5H4N-2)}] [R = But (2) or C≡CPh (3)], respectively. However, the one-pot reaction of 1 with PhC≡CH and BunLi in Et2O afforded lithium germinate [{(PhC≡C)3Ge}3GeLi(Et2O)3] (4). Compound 1 can also undergo ligand transfer reaction with LiAlH 4, to give [AlH{N(SiMe3)C(Ph)C(SiMe3)(C 5H4N-2)}2] (5). Treatment of 1 with excess NaBH4 in THF afforded germanium(II) hydride-borane adduct [Ge(BH 3){N(SiMe3)C(Ph)C(SiMe3)(C5H 4N-2)}H] (6). The reaction of 1 with MI (M = Cu and Au) gave the first examples of Ge(II)-M(I) adducts [Ge-(CuI){N(SiMe3)C(Ph) C(SiMe3)(C5H4N-2)}Cl]4 (7) and [Ge(AuI){N(SiMe3)C(Ph)C(SiMe3)(C5H 4N-2)}-Cl] (8). Compounds 2-8 have been characterized by X-ray analysis.",

author = "Leung, {Wing Por} and So, {Cheuk Wai} and Chong, {Kim Hung} and Kan, {Kwok Wai} and Chan, {Hoi Shan} and Mak, {Thomas C.W.}",

year = "2006",

month = may,

day = "22",

doi = "10.1021/om060032g",

language = "English",

volume = "25",

pages = "2851--2858",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "11",

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TY - JOUR

T1 - Reactivity of pyridyl-1-azaallyl germanium(II) chloride

T2 - Synthesis of novel lithium germinate [{(PhC≡C)3Ge}3GeLi(Et 2O)3] and Ge(II)-M(I) (M = Cu and Au) adducts

AU - Leung, Wing Por

AU - So, Cheuk Wai

AU - Chong, Kim Hung

AU - Kan, Kwok Wai

AU - Chan, Hoi Shan

AU - Mak, Thomas C.W.

PY - 2006/5/22

Y1 - 2006/5/22

N2 - The reaction of [Ge{N(SiMe3)C(Ph)C(SiMe3)(C 5H4N-2)}Cl] (1) with LiBut or LiC≡CPh in Et2O afforded substituted products [Ge(R){N(SiMe3)C(Ph) C(SiMe3)(C5H4N-2)}] [R = But (2) or C≡CPh (3)], respectively. However, the one-pot reaction of 1 with PhC≡CH and BunLi in Et2O afforded lithium germinate [{(PhC≡C)3Ge}3GeLi(Et2O)3] (4). Compound 1 can also undergo ligand transfer reaction with LiAlH 4, to give [AlH{N(SiMe3)C(Ph)C(SiMe3)(C 5H4N-2)}2] (5). Treatment of 1 with excess NaBH4 in THF afforded germanium(II) hydride-borane adduct [Ge(BH 3){N(SiMe3)C(Ph)C(SiMe3)(C5H 4N-2)}H] (6). The reaction of 1 with MI (M = Cu and Au) gave the first examples of Ge(II)-M(I) adducts [Ge-(CuI){N(SiMe3)C(Ph) C(SiMe3)(C5H4N-2)}Cl]4 (7) and [Ge(AuI){N(SiMe3)C(Ph)C(SiMe3)(C5H 4N-2)}-Cl] (8). Compounds 2-8 have been characterized by X-ray analysis.

AB - The reaction of [Ge{N(SiMe3)C(Ph)C(SiMe3)(C 5H4N-2)}Cl] (1) with LiBut or LiC≡CPh in Et2O afforded substituted products [Ge(R){N(SiMe3)C(Ph) C(SiMe3)(C5H4N-2)}] [R = But (2) or C≡CPh (3)], respectively. However, the one-pot reaction of 1 with PhC≡CH and BunLi in Et2O afforded lithium germinate [{(PhC≡C)3Ge}3GeLi(Et2O)3] (4). Compound 1 can also undergo ligand transfer reaction with LiAlH 4, to give [AlH{N(SiMe3)C(Ph)C(SiMe3)(C 5H4N-2)}2] (5). Treatment of 1 with excess NaBH4 in THF afforded germanium(II) hydride-borane adduct [Ge(BH 3){N(SiMe3)C(Ph)C(SiMe3)(C5H 4N-2)}H] (6). The reaction of 1 with MI (M = Cu and Au) gave the first examples of Ge(II)-M(I) adducts [Ge-(CuI){N(SiMe3)C(Ph) C(SiMe3)(C5H4N-2)}Cl]4 (7) and [Ge(AuI){N(SiMe3)C(Ph)C(SiMe3)(C5H 4N-2)}-Cl] (8). Compounds 2-8 have been characterized by X-ray analysis.

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U2 - 10.1021/om060032g

DO - 10.1021/om060032g

M3 - Article

AN - SCOPUS:33745756995

SN - 0276-7333

VL - 25

SP - 2851

EP - 2858

JO - Organometallics

JF - Organometallics

IS - 11

ER -

Reactivity of pyridyl-1-azaallyl germanium(II) chloride: Synthesis of novel lithium germinate [{(PhC≡C)₃Ge}₃GeLi(Et ₂O)₃] and Ge(II)-M(I) (M = Cu and Au) adducts

Abstract

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