Bonding effects and the crystal structures of (NH4)(2)[Cu(H2O)(6)](SO4)(2) and its (H2O)-O-18 substituted form at 9.5 K

Figgis, Brian N., Sobolev, Alexandre N., Simmons, Charles J., Hitchman, Michael A., Stretemeier, Horst and Riley, Mark J. (2000) Bonding effects and the crystal structures of (NH4)(2)[Cu(H2O)(6)](SO4)(2) and its (H2O)-O-18 substituted form at 9.5 K. Acta Crystallographica. Section B: Structural Science, 56 3: 438-443. doi:10.1107/S0108768100000963

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Author Figgis, Brian N.
Sobolev, Alexandre N.
Simmons, Charles J.
Hitchman, Michael A.
Stretemeier, Horst
Riley, Mark J.
Title Bonding effects and the crystal structures of (NH4)(2)[Cu(H2O)(6)](SO4)(2) and its (H2O)-O-18 substituted form at 9.5 K
Journal name Acta Crystallographica. Section B: Structural Science   Check publisher's open access policy
ISSN 0108-7681
Publication date 2000
Sub-type Article (original research)
DOI 10.1107/S0108768100000963
Open Access Status File (Publisher version)
Volume 56
Issue 3
Start page 438
End page 443
Total pages 6
Place of publication United Kingdom
Publisher International Union of Crystallography
Collection year 2000
Language eng
Subject C1
250203 Solid State Chemistry
780103 Chemical sciences
Abstract The crystal structures of the Tutton salts (NH4)(2)[Cu(H2O)(6)](SO4)(2), diammonium hexaaquacopper disulfate, formed with normal water and isotopically substituted (H2O)-O-18, have been determined by X-ray diffraction at 9.5 K and are very similar, with Cu-O(7) the longest of the Cu-O bonds of the Jahn-Teller distorted octahedral [Cu(H2O)(6)](2+) complex. It is known that structural differences accompany deuteration of (NH4)(2)[Cu(H2O)(6)](SO4)(2), the most dramatic of which is a switch to Cu-O(8) as the longest such bond. The present result suggests that the structural differences are associated with hydrogen-bonding effects rather than with increased mass of the water ligands affecting the Jahn-Teller coupling. The Jahn-Teller distortions and hydrogen-bonding contacts in the compounds are compared with those reported for other Tutton salts at ambient and high pressure.
Keyword Crystallography
Ammonium Hexaaquacopper(ii) Sulfate
Copper(ii) Complexes
Tuttons Salt
Bonding effects
Hydrogen bonding
Tutton salts
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
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Created: Mon, 13 Aug 2007, 11:46:38 EST