Pentacoordinate silyl cations stabilized by coordination with oxygen donors: Crystal structure, charge distribution, and stereodynamics

Inna Kalikhman; Sonia Krivonos; Lutz Lameyer; Dietmar Stalke; Daniel Kost

doi:10.1021/om000522n

Pentacoordinate silyl cations stabilized by coordination with oxygen donors: Crystal structure, charge distribution, and stereodynamics

Inna Kalikhman
, Sonia Krivonos
, Lutz Lameyer
, Dietmar Stalke
, Daniel Kost

Department of Chemistry

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

42 Scopus citations

Abstract

Attempted preparation of neutral hexacoordinate silicon chelates with two O→Si dative bonds (4), in analogy to previously reported bis-N→Si isomers (2), resulted in unexpected formation of pentacoordinate siliconium complexes (5 and 6), characterized by a crystal structure. The barrier for inversion of configuration at silicon was determined by selective inversion recovery NMR measurements: ΔG* = 20.5 ± 0.2 kcal mol^-1.

Original language	English
Pages (from-to)	1053-1055
Number of pages	3
Journal	Organometallics
Volume	20
Issue number	6
DOIs	https://doi.org/10.1021/om000522n
State	Published - 19 Mar 2001

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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10.1021/om000522n

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title = "Pentacoordinate silyl cations stabilized by coordination with oxygen donors: Crystal structure, charge distribution, and stereodynamics",

abstract = "Attempted preparation of neutral hexacoordinate silicon chelates with two O→Si dative bonds (4), in analogy to previously reported bis-N→Si isomers (2), resulted in unexpected formation of pentacoordinate siliconium complexes (5 and 6), characterized by a crystal structure. The barrier for inversion of configuration at silicon was determined by selective inversion recovery NMR measurements: ΔG* = 20.5 ± 0.2 kcal mol-1.",

author = "Inna Kalikhman and Sonia Krivonos and Lutz Lameyer and Dietmar Stalke and Daniel Kost",

year = "2001",

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T1 - Pentacoordinate silyl cations stabilized by coordination with oxygen donors

T2 - Crystal structure, charge distribution, and stereodynamics

AU - Kalikhman, Inna

AU - Krivonos, Sonia

AU - Lameyer, Lutz

AU - Stalke, Dietmar

AU - Kost, Daniel

PY - 2001/3/19

Y1 - 2001/3/19

N2 - Attempted preparation of neutral hexacoordinate silicon chelates with two O→Si dative bonds (4), in analogy to previously reported bis-N→Si isomers (2), resulted in unexpected formation of pentacoordinate siliconium complexes (5 and 6), characterized by a crystal structure. The barrier for inversion of configuration at silicon was determined by selective inversion recovery NMR measurements: ΔG* = 20.5 ± 0.2 kcal mol-1.

AB - Attempted preparation of neutral hexacoordinate silicon chelates with two O→Si dative bonds (4), in analogy to previously reported bis-N→Si isomers (2), resulted in unexpected formation of pentacoordinate siliconium complexes (5 and 6), characterized by a crystal structure. The barrier for inversion of configuration at silicon was determined by selective inversion recovery NMR measurements: ΔG* = 20.5 ± 0.2 kcal mol-1.

UR - https://www.scopus.com/pages/publications/0035912002

U2 - 10.1021/om000522n

DO - 10.1021/om000522n

M3 - Article

AN - SCOPUS:0035912002

SN - 0276-7333

VL - 20

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EP - 1055

JO - Organometallics

JF - Organometallics

IS - 6

ER -

Pentacoordinate silyl cations stabilized by coordination with oxygen donors: Crystal structure, charge distribution, and stereodynamics

Abstract

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