1.
Acta Crystallogr E Crystallogr Commun
; 76(Pt 7): 1136-1138, 2020 Jul 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-32695467
RESUMO
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.