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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.

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 R 1 = 0.029 and revealed a structure based upon [Cu4(OH)6(H2O)O] sheets, which contain Jahn-Teller-distorted Cu octa-hedra. The sulfate tetra-hedra are bonded to one side of the sheet via corner sharing and linked to successive sheets via extensive hydrogen bonds. The sulfate tetra-hedra are split and rotated, which enables additional hydrogen bonds.

SUBMITTER: Mills S 

PROVIDER: S-EPMC7336798 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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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.

Mills Stuart S   Aishima Jun J   Aragao David D   Caradoc-Davies Tom Tudor TT   Cowieson Nathan N   Gee Christine L CL   Ericsson Daniel D   Harrop Stephen S   Panjikar Santosh S   Smith Kate Mary Louise KML   Riboldi-Tunnicliffe Alan A   Williamson Rachel R   Price Jason Roy JR  

Acta crystallographica. Section E, Crystallographic communications 20200626 Pt 7

Exceptionally large crystals of posnjakite, Cu<sub>4</sub>SO<sub>4</sub>(OH)<sub>6</sub>(H<sub>2</sub>O), 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 <i>R</i> <sub>1</sub> = 0.029 and revealed a structure based upon [Cu<sub>4</sub>(OH)<sub>6</sub>(H<sub>2</sub>O)O] sheets, which contain Jahn-Teller-distorted Cu octa-hedra. The sulfate tetra-  ...[more]

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