Reactivity of a distannylene toward potassium graphite: Synthesis of a stannylidenide anion

Siew Peng Chia; Rakesh Ganguly; Yongxin Li; Cheuk Wai So

doi:10.1021/om300646d

Reactivity of a distannylene toward potassium graphite: Synthesis of a stannylidenide anion

Siew Peng Chia, Rakesh Ganguly, Yongxin Li, Cheuk Wai So^*

^*Corresponding author for this work

Nanyang Technological University

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

40 Citations (Scopus)

Abstract

The synthesis and characterization of the stannylidenide anion [LSn:] ^- (L = 2,6-(CH=NBu ^t) ₂C ₆H ₃) supported by the 2,6-diiminophenyl ligand is described. The reaction of the chlorostannylene [LSnCl] (2) with excess KC ₈ in diethyl ether at room temperature afforded the distannylene [LSn:] ₂ (3). The treatment of 3 with 2 equiv of KC ₈ in tetrahydrofuran (THF) resulted in the cleavage of the Sn ^I-Sn ^I bond in 3 to afford the potassium stannylidenide [LSnK·THF] (4). The molecular structure of compound 4 as determined by single-crystal X-ray diffraction analysis shows that the K atom is η ⁵-coordinated to the low-valent tin heterocycle. Moreover, the negative charge at the Sn atom in compound 4 is stabilized by an electron delocalization in the low-valent tin heterocycle.

Original language	English
Pages (from-to)	6415-6419
Number of pages	5
Journal	Organometallics
Volume	31
Issue number	17
DOIs	https://doi.org/10.1021/om300646d
Publication status	Published - Sept 10 2012
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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title = "Reactivity of a distannylene toward potassium graphite: Synthesis of a stannylidenide anion",

abstract = "The synthesis and characterization of the stannylidenide anion [LSn:] - (L = 2,6-(CH=NBu t) 2C 6H 3) supported by the 2,6-diiminophenyl ligand is described. The reaction of the chlorostannylene [LSnCl] (2) with excess KC 8 in diethyl ether at room temperature afforded the distannylene [LSn:] 2 (3). The treatment of 3 with 2 equiv of KC 8 in tetrahydrofuran (THF) resulted in the cleavage of the Sn I-Sn I bond in 3 to afford the potassium stannylidenide [LSnK·THF] (4). The molecular structure of compound 4 as determined by single-crystal X-ray diffraction analysis shows that the K atom is η 5-coordinated to the low-valent tin heterocycle. Moreover, the negative charge at the Sn atom in compound 4 is stabilized by an electron delocalization in the low-valent tin heterocycle.",

author = "Chia, {Siew Peng} and Rakesh Ganguly and Yongxin Li and So, {Cheuk Wai}",

year = "2012",

month = sep,

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doi = "10.1021/om300646d",

language = "English",

volume = "31",

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journal = "Organometallics",

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T1 - Reactivity of a distannylene toward potassium graphite

T2 - Synthesis of a stannylidenide anion

AU - Chia, Siew Peng

AU - Ganguly, Rakesh

AU - Li, Yongxin

AU - So, Cheuk Wai

PY - 2012/9/10

Y1 - 2012/9/10

N2 - The synthesis and characterization of the stannylidenide anion [LSn:] - (L = 2,6-(CH=NBu t) 2C 6H 3) supported by the 2,6-diiminophenyl ligand is described. The reaction of the chlorostannylene [LSnCl] (2) with excess KC 8 in diethyl ether at room temperature afforded the distannylene [LSn:] 2 (3). The treatment of 3 with 2 equiv of KC 8 in tetrahydrofuran (THF) resulted in the cleavage of the Sn I-Sn I bond in 3 to afford the potassium stannylidenide [LSnK·THF] (4). The molecular structure of compound 4 as determined by single-crystal X-ray diffraction analysis shows that the K atom is η 5-coordinated to the low-valent tin heterocycle. Moreover, the negative charge at the Sn atom in compound 4 is stabilized by an electron delocalization in the low-valent tin heterocycle.

AB - The synthesis and characterization of the stannylidenide anion [LSn:] - (L = 2,6-(CH=NBu t) 2C 6H 3) supported by the 2,6-diiminophenyl ligand is described. The reaction of the chlorostannylene [LSnCl] (2) with excess KC 8 in diethyl ether at room temperature afforded the distannylene [LSn:] 2 (3). The treatment of 3 with 2 equiv of KC 8 in tetrahydrofuran (THF) resulted in the cleavage of the Sn I-Sn I bond in 3 to afford the potassium stannylidenide [LSnK·THF] (4). The molecular structure of compound 4 as determined by single-crystal X-ray diffraction analysis shows that the K atom is η 5-coordinated to the low-valent tin heterocycle. Moreover, the negative charge at the Sn atom in compound 4 is stabilized by an electron delocalization in the low-valent tin heterocycle.

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Reactivity of a distannylene toward potassium graphite: Synthesis of a stannylidenide anion

Abstract

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