Anisotropic thermal expansion in 18-crown-6.2 H2O·2 HNO3

Maria Calleja; Sax A. Mason; Paul D. Prince; Jonathan W. Steed; Clive Wilkinson

doi:10.1039/b207292k

Anisotropic thermal expansion in 18-crown-6.2 H₂O·2 HNO₃

Maria Calleja, Sax A. Mason, Paul D. Prince, Jonathan W. Steed^*, Clive Wilkinson

^*Corresponding author for this work

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

25 Scopus citations

Abstract

Reaction of aqueous HNO₃ with 18-crown-6 results in the isolation of the neutral inclusion compound 18-crown-6.2 H₂O·2 HNO₃. Variable temperature single crystal X-ray and neutron diffraction data reveal that the triclinic (P1̄) unit cell undergoes a highly anisotropic change in shape with temperature, with the crystallographic β angle changing smoothly from 66.56° to 69.03° between room temperature and 20 K. This arises from a change in shape of the crown ether in response to increases in hydrogen bond distances in the HNO₃⋯H₂O⋯crown ether chain.

Original language	English (US)
Pages (from-to)	28-31
Number of pages	4
Journal	New Journal of Chemistry
Volume	27
Issue number	1
DOIs	https://doi.org/10.1039/b207292k
State	Published - 2003
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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title = "Anisotropic thermal expansion in 18-crown-6.2 H2O·2 HNO3",

abstract = "Reaction of aqueous HNO3 with 18-crown-6 results in the isolation of the neutral inclusion compound 18-crown-6.2 H2O·2 HNO3. Variable temperature single crystal X-ray and neutron diffraction data reveal that the triclinic (P{\=1}) unit cell undergoes a highly anisotropic change in shape with temperature, with the crystallographic β angle changing smoothly from 66.56° to 69.03° between room temperature and 20 K. This arises from a change in shape of the crown ether in response to increases in hydrogen bond distances in the HNO3⋯H2O⋯crown ether chain.",

author = "Maria Calleja and Mason, {Sax A.} and Prince, {Paul D.} and Steed, {Jonathan W.} and Clive Wilkinson",

year = "2003",

doi = "10.1039/b207292k",

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AU - Calleja, Maria

AU - Mason, Sax A.

AU - Prince, Paul D.

AU - Steed, Jonathan W.

AU - Wilkinson, Clive

PY - 2003

Y1 - 2003

N2 - Reaction of aqueous HNO3 with 18-crown-6 results in the isolation of the neutral inclusion compound 18-crown-6.2 H2O·2 HNO3. Variable temperature single crystal X-ray and neutron diffraction data reveal that the triclinic (P1̄) unit cell undergoes a highly anisotropic change in shape with temperature, with the crystallographic β angle changing smoothly from 66.56° to 69.03° between room temperature and 20 K. This arises from a change in shape of the crown ether in response to increases in hydrogen bond distances in the HNO3⋯H2O⋯crown ether chain.

AB - Reaction of aqueous HNO3 with 18-crown-6 results in the isolation of the neutral inclusion compound 18-crown-6.2 H2O·2 HNO3. Variable temperature single crystal X-ray and neutron diffraction data reveal that the triclinic (P1̄) unit cell undergoes a highly anisotropic change in shape with temperature, with the crystallographic β angle changing smoothly from 66.56° to 69.03° between room temperature and 20 K. This arises from a change in shape of the crown ether in response to increases in hydrogen bond distances in the HNO3⋯H2O⋯crown ether chain.

UR - http://www.scopus.com/inward/record.url?scp=0037241148&partnerID=8YFLogxK

U2 - 10.1039/b207292k

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JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 1

ER -

Anisotropic thermal expansion in 18-crown-6.2 H₂O·2 HNO₃

Abstract

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