Novel Pentacoordinate Siliconium Complexes Stabilized by Oxygen and Nitrogen Donors: Highly Sensitive and Unusual Equilibrium between Ionic Penta- and Neutral Hexacoordinate Compounds

Daniel Kost; Vijeyakumar Kingston; Inna Kalikhman

doi:10.1002/9783527620777.ch10dd

Novel Pentacoordinate Siliconium Complexes Stabilized by Oxygen and Nitrogen Donors: Highly Sensitive and Unusual Equilibrium between Ionic Penta- and Neutral Hexacoordinate Compounds

Daniel Kost
, Vijeyakumar Kingston
, Inna Kalikhman

Department of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

The first ionic dissociation of the Si–Cl bond in neutral hexacoordinate silicon complexes is reported. An equilibrium reaction between the ionic siliconium chloride and its neutral precursor (dissociation-recombination) is observed. The population ratio can be controlled by temperature or by replacement of the chloro ligand by a triflate group. The reaction enthalpy and entropy of the dissociation are both negative, suggesting that solvent organization facilitates dissociation at low temperature.

Original language	English
Title of host publication	Organosilicon Chemistry
Subtitle of host publication	From Molecules to Materials
Publisher	wiley
Pages	55-60
Number of pages	6
ISBN (Electronic)	9783527620777
ISBN (Print)	9783527323470
DOIs	https://doi.org/10.1002/9783527620777.ch10dd
State	Published - 1 Jan 2008

Keywords

equilibrium reaction
negative entropy
neutral hexacoordinate complexes
onic dissociation
siliconium compounds

ASJC Scopus subject areas

General Chemistry

Access to Document

10.1002/9783527620777.ch10dd

Cite this

@inbook{ff252896985f45bdb0b0dffcf030863a,

title = "Novel Pentacoordinate Siliconium Complexes Stabilized by Oxygen and Nitrogen Donors: Highly Sensitive and Unusual Equilibrium between Ionic Penta- and Neutral Hexacoordinate Compounds",

abstract = "The first ionic dissociation of the Si–Cl bond in neutral hexacoordinate silicon complexes is reported. An equilibrium reaction between the ionic siliconium chloride and its neutral precursor (dissociation-recombination) is observed. The population ratio can be controlled by temperature or by replacement of the chloro ligand by a triflate group. The reaction enthalpy and entropy of the dissociation are both negative, suggesting that solvent organization facilitates dissociation at low temperature.",

keywords = "equilibrium reaction, negative entropy, neutral hexacoordinate complexes, onic dissociation, siliconium compounds",

author = "Daniel Kost and Vijeyakumar Kingston and Inna Kalikhman",

note = "Publisher Copyright: {\textcopyright} VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994.",

year = "2008",

month = jan,

day = "1",

doi = "10.1002/9783527620777.ch10dd",

language = "English",

isbn = "9783527323470",

pages = "55--60",

booktitle = "Organosilicon Chemistry",

publisher = "wiley",

}

Novel Pentacoordinate Siliconium Complexes Stabilized by Oxygen and Nitrogen Donors: Highly Sensitive and Unusual Equilibrium between Ionic Penta- and Neutral Hexacoordinate Compounds. / Kost, Daniel; Kingston, Vijeyakumar; Kalikhman, Inna.
Organosilicon Chemistry: From Molecules to Materials. wiley, 2008. p. 55-60.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

TY - CHAP

T1 - Novel Pentacoordinate Siliconium Complexes Stabilized by Oxygen and Nitrogen Donors

T2 - Highly Sensitive and Unusual Equilibrium between Ionic Penta- and Neutral Hexacoordinate Compounds

AU - Kost, Daniel

AU - Kingston, Vijeyakumar

AU - Kalikhman, Inna

N1 - Publisher Copyright: © VCH Verlagsgesellschaft mbH, D-69451 Weinheim (Federal Republic of Germany), 1994.

PY - 2008/1/1

Y1 - 2008/1/1

N2 - The first ionic dissociation of the Si–Cl bond in neutral hexacoordinate silicon complexes is reported. An equilibrium reaction between the ionic siliconium chloride and its neutral precursor (dissociation-recombination) is observed. The population ratio can be controlled by temperature or by replacement of the chloro ligand by a triflate group. The reaction enthalpy and entropy of the dissociation are both negative, suggesting that solvent organization facilitates dissociation at low temperature.

AB - The first ionic dissociation of the Si–Cl bond in neutral hexacoordinate silicon complexes is reported. An equilibrium reaction between the ionic siliconium chloride and its neutral precursor (dissociation-recombination) is observed. The population ratio can be controlled by temperature or by replacement of the chloro ligand by a triflate group. The reaction enthalpy and entropy of the dissociation are both negative, suggesting that solvent organization facilitates dissociation at low temperature.

KW - equilibrium reaction

KW - negative entropy

KW - neutral hexacoordinate complexes

KW - onic dissociation

KW - siliconium compounds

UR - https://www.scopus.com/pages/publications/105008633745

U2 - 10.1002/9783527620777.ch10dd

DO - 10.1002/9783527620777.ch10dd

M3 - Chapter

AN - SCOPUS:105008633745

SN - 9783527323470

SP - 55

EP - 60

BT - Organosilicon Chemistry

PB - wiley

ER -

Novel Pentacoordinate Siliconium Complexes Stabilized by Oxygen and Nitrogen Donors: Highly Sensitive and Unusual Equilibrium between Ionic Penta- and Neutral Hexacoordinate Compounds

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this