Solution and solid-state structure of the [Ag2{closo-CB11H12}4]2 -

Mark A. Fox; Mary F. Mahon; Nathan J. Patmore; Andrew S. Weller

doi:10.1021/ic025730h

Solution and solid-state structure of the [Ag₂{closo-CB₁₁H₁₂}₄]^{2 -}

Mark A. Fox, Mary F. Mahon, Nathan J. Patmore, Andrew S. Weller

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

35 Citations (Scopus)

Abstract

Addition of the carbene 1,3-dimesitylimidazol-2-ylidene (IMes) to a toluene solution of Ag[closo-CB₁₁H₁₂] results in the formation of the complex [(IMes)₂Ag]₂[Ag₂{closo- CB₁₁H₁₂}₄], the anionic component of which contains two silver(I) centers bridged by two carboranes in addition to one terminally bound carborane on each metal, in the solid-state. Comparison of the observed ¹¹B{¹H} NMR chemical shifts of [(IMes)₂Ag]₂[Ag₂{closo- CB₁₁H₁₂}₄] or Ag[closo-CB₁₁H₁₂] with [NBu₄][closo-CB₁₁H₁₂] in CD₂Cl₂ demonstrates that the silver ion interacts significantly with the cage in solution. Theoretical investigations using the ab initio/GIAO/NMR method of [closo-CB₁₁H₁₂]^- and Na[closo-CB₁₁H₁₂] as model geometries for the silver salts support experimental evidence for these Ag··· {BH} interactions in solution.

Original language	English
Pages (from-to)	4567-4573
Number of pages	7
Journal	Inorganic Chemistry
Volume	41
Issue number	17
Early online date	27 Jul 2002
DOIs	https://doi.org/10.1021/ic025730h
Publication status	Published - 1 Aug 2002
Externally published	Yes

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title = "Solution and solid-state structure of the [Ag2{closo-CB11H12}4]2 -",

abstract = "Addition of the carbene 1,3-dimesitylimidazol-2-ylidene (IMes) to a toluene solution of Ag[closo-CB11H12] results in the formation of the complex [(IMes)2Ag]2[Ag2{closo- CB11H12}4], the anionic component of which contains two silver(I) centers bridged by two carboranes in addition to one terminally bound carborane on each metal, in the solid-state. Comparison of the observed 11B{1H} NMR chemical shifts of [(IMes)2Ag]2[Ag2{closo- CB11H12}4] or Ag[closo-CB11H12] with [NBu4][closo-CB11H12] in CD2Cl2 demonstrates that the silver ion interacts significantly with the cage in solution. Theoretical investigations using the ab initio/GIAO/NMR method of [closo-CB11H12]- and Na[closo-CB11H12] as model geometries for the silver salts support experimental evidence for these Ag··· {BH} interactions in solution.",

author = "Fox, {Mark A.} and Mahon, {Mary F.} and Patmore, {Nathan J.} and Weller, {Andrew S.}",

year = "2002",

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T1 - Solution and solid-state structure of the [Ag2{closo-CB11H12}4]2 -

AU - Fox, Mark A.

AU - Mahon, Mary F.

AU - Patmore, Nathan J.

AU - Weller, Andrew S.

PY - 2002/8/1

Y1 - 2002/8/1

N2 - Addition of the carbene 1,3-dimesitylimidazol-2-ylidene (IMes) to a toluene solution of Ag[closo-CB11H12] results in the formation of the complex [(IMes)2Ag]2[Ag2{closo- CB11H12}4], the anionic component of which contains two silver(I) centers bridged by two carboranes in addition to one terminally bound carborane on each metal, in the solid-state. Comparison of the observed 11B{1H} NMR chemical shifts of [(IMes)2Ag]2[Ag2{closo- CB11H12}4] or Ag[closo-CB11H12] with [NBu4][closo-CB11H12] in CD2Cl2 demonstrates that the silver ion interacts significantly with the cage in solution. Theoretical investigations using the ab initio/GIAO/NMR method of [closo-CB11H12]- and Na[closo-CB11H12] as model geometries for the silver salts support experimental evidence for these Ag··· {BH} interactions in solution.

AB - Addition of the carbene 1,3-dimesitylimidazol-2-ylidene (IMes) to a toluene solution of Ag[closo-CB11H12] results in the formation of the complex [(IMes)2Ag]2[Ag2{closo- CB11H12}4], the anionic component of which contains two silver(I) centers bridged by two carboranes in addition to one terminally bound carborane on each metal, in the solid-state. Comparison of the observed 11B{1H} NMR chemical shifts of [(IMes)2Ag]2[Ag2{closo- CB11H12}4] or Ag[closo-CB11H12] with [NBu4][closo-CB11H12] in CD2Cl2 demonstrates that the silver ion interacts significantly with the cage in solution. Theoretical investigations using the ab initio/GIAO/NMR method of [closo-CB11H12]- and Na[closo-CB11H12] as model geometries for the silver salts support experimental evidence for these Ag··· {BH} interactions in solution.

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DO - 10.1021/ic025730h

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AN - SCOPUS:0037179111

VL - 41

SP - 4567

EP - 4573

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 17

ER -

Solution and solid-state structure of the [Ag₂{closo-CB₁₁H₁₂}₄]^{2 -}

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