Oxonium ions from aqua regia: Isolation by hydrogen bonding to crown ethers

M. Calleja; K. Johnson; W. J. Belcher; J. W. Steed

doi:10.1021/ic010468i

Oxonium ions from aqua regia: Isolation by hydrogen bonding to crown ethers

M. Calleja, K. Johnson, W. J. Belcher, J. W. Steed^*

^*Corresponding author for this work

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

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Abstract

The preparation and structures of a variety of oxonium ion tetrachloroaurate(III) salts isolated from aqua regia are reported. The new compounds are [(H₅O₂)₂(12-crown-4)₂] [AuCl₄]₂ (1), [(H₇O₃)(15-crown-5)][AuCl₄] (2), [(H₅O₂)(benzo-15-crown-5)₂] [AuCl₄] (3), [(H₃O)(18-crown-6)][AuCl₄] (4), [(H₅O₂)(dibenzo-24-crown-8)][AuCl₄] (5), [(H₅O₂)(4-nitrobenzo-15-crown-5)₂] [AuCl₄] (6), [(H₃O)(4-nitrobenzo-18-crown-6)][AuCl₄] (7), [(H₁₁O₅)-(tetrachlorodibenzo-18-crown-6)₂] [AuCl₄] (8), and [(H₇O₃)(dinitrodibenzo-30-crown-10)][AuCl₄] (9). A significant correlation between the degree of proton hydration and crown ether size is observed. Aryl crown ethers are nitrated in concentrated aqua regia, but nonnitrated products may be obtained in a dilute solution of aqua regia by reaction with aqueous HAuCl₄.

Original language	English (US)
Pages (from-to)	4978-4985
Number of pages	8
Journal	Inorganic chemistry
Volume	40
Issue number	19
DOIs	https://doi.org/10.1021/ic010468i
State	Published - Sep 10 2001
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{ca37e7ef5a754df1ade57c59e46495e4,

title = "Oxonium ions from aqua regia: Isolation by hydrogen bonding to crown ethers",

abstract = "The preparation and structures of a variety of oxonium ion tetrachloroaurate(III) salts isolated from aqua regia are reported. The new compounds are [(H5O2)2(12-crown-4)2] [AuCl4]2 (1), [(H7O3)(15-crown-5)][AuCl4] (2), [(H5O2)(benzo-15-crown-5)2] [AuCl4] (3), [(H3O)(18-crown-6)][AuCl4] (4), [(H5O2)(dibenzo-24-crown-8)][AuCl4] (5), [(H5O2)(4-nitrobenzo-15-crown-5)2] [AuCl4] (6), [(H3O)(4-nitrobenzo-18-crown-6)][AuCl4] (7), [(H11O5)-(tetrachlorodibenzo-18-crown-6)2] [AuCl4] (8), and [(H7O3)(dinitrodibenzo-30-crown-10)][AuCl4] (9). A significant correlation between the degree of proton hydration and crown ether size is observed. Aryl crown ethers are nitrated in concentrated aqua regia, but nonnitrated products may be obtained in a dilute solution of aqua regia by reaction with aqueous HAuCl4.",

author = "M. Calleja and K. Johnson and Belcher, {W. J.} and Steed, {J. W.}",

year = "2001",

month = sep,

day = "10",

doi = "10.1021/ic010468i",

language = "English (US)",

volume = "40",

pages = "4978--4985",

journal = "Inorganic chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

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T1 - Oxonium ions from aqua regia

T2 - Isolation by hydrogen bonding to crown ethers

AU - Calleja, M.

AU - Johnson, K.

AU - Belcher, W. J.

AU - Steed, J. W.

PY - 2001/9/10

Y1 - 2001/9/10

N2 - The preparation and structures of a variety of oxonium ion tetrachloroaurate(III) salts isolated from aqua regia are reported. The new compounds are [(H5O2)2(12-crown-4)2] [AuCl4]2 (1), [(H7O3)(15-crown-5)][AuCl4] (2), [(H5O2)(benzo-15-crown-5)2] [AuCl4] (3), [(H3O)(18-crown-6)][AuCl4] (4), [(H5O2)(dibenzo-24-crown-8)][AuCl4] (5), [(H5O2)(4-nitrobenzo-15-crown-5)2] [AuCl4] (6), [(H3O)(4-nitrobenzo-18-crown-6)][AuCl4] (7), [(H11O5)-(tetrachlorodibenzo-18-crown-6)2] [AuCl4] (8), and [(H7O3)(dinitrodibenzo-30-crown-10)][AuCl4] (9). A significant correlation between the degree of proton hydration and crown ether size is observed. Aryl crown ethers are nitrated in concentrated aqua regia, but nonnitrated products may be obtained in a dilute solution of aqua regia by reaction with aqueous HAuCl4.

AB - The preparation and structures of a variety of oxonium ion tetrachloroaurate(III) salts isolated from aqua regia are reported. The new compounds are [(H5O2)2(12-crown-4)2] [AuCl4]2 (1), [(H7O3)(15-crown-5)][AuCl4] (2), [(H5O2)(benzo-15-crown-5)2] [AuCl4] (3), [(H3O)(18-crown-6)][AuCl4] (4), [(H5O2)(dibenzo-24-crown-8)][AuCl4] (5), [(H5O2)(4-nitrobenzo-15-crown-5)2] [AuCl4] (6), [(H3O)(4-nitrobenzo-18-crown-6)][AuCl4] (7), [(H11O5)-(tetrachlorodibenzo-18-crown-6)2] [AuCl4] (8), and [(H7O3)(dinitrodibenzo-30-crown-10)][AuCl4] (9). A significant correlation between the degree of proton hydration and crown ether size is observed. Aryl crown ethers are nitrated in concentrated aqua regia, but nonnitrated products may be obtained in a dilute solution of aqua regia by reaction with aqueous HAuCl4.

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EP - 4985

JO - Inorganic chemistry

JF - Inorganic chemistry

IS - 19

ER -

Oxonium ions from aqua regia: Isolation by hydrogen bonding to crown ethers

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