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Crystal structure of posnjakite formed in the first crystal water-cooling line of the ANSTO Melbourne Australian Synchrotron MX1 Double Crystal Monochromator
DOI:
10.1107/S2056989020008099
Authors:
Stuart
Mills
(Museum Victoria)
,
Jun
Aishima
(rookhaven National Laboratory; Australian Synchrotron)
,
David
Aragao
(Australian Synchrotron; Diamond Light Source)
,
Tom Tudor
Caradoc-Davies
(Australian Synchrotron)
,
Nathan
Cowieson
(Australian Synchrotron; Diamond Light Source)
,
Christine L.
Gee
(Australian Synchrotron; University of California, Berkeley)
,
Daniel
Ericsson
(Australian Synchrotron)
,
Stephen
Harrop
(Australian Synchrotron)
,
Santosh
Panjikar
(Australian Synchrotron)
,
Kate Mary Louise
Smith
(Australian Synchrotron)
,
Alan
Riboldi-Tunnicliffe
(Australian Synchrotron)
,
Rachel
Williamson
(Australian Synchrotron)
,
Jason Roy
Price
(Australian Synchrotron)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Acta Crystallographica Section E Crystallographic Communications
, VOL 76
, PAGES 1136 - 1138
State:
Published (Approved)
Published:
July 2020

Abstract: Exceptionally large crystals of posnjakite, Cu4SO4(OH)6(H2O), formed during corrosion of a Swagelock(tm) Snubber copper gasket within the MX1 beamline at the ANSTO-Melbourne, Australian Synchrotron. The crystal structure was solved using synchrotron radiation to R1 = 0.029 and revealed a structure based upon [Cu4(OH)6(H2O)O] sheets, which contain Jahn–Teller-distorted Cu octahedra. The sulfate tetrahedra are bonded to one side of the sheet via corner sharing and linked to successive sheets via extensive hydrogen bonds. The sulfate tetrahedra are split and rotated, which enables additional hydrogen bonds.
Journal Keywords: crystal structure; copper corrosion; equipment failure; posnjakite; hydrogen bonding
Subject Areas:
Earth Science,
Chemistry
Facility: MX1 beamline at Australian Synchrotron
Added On:
01/07/2020 09:48
Documents:
tx2024.pdf
Discipline Tags:
Earth Sciences & Environment
Mineralogy
Chemistry
Corrosion
Inorganic Chemistry
Geology
Technical Tags: