title: Redetermination of hepta-potassium nona-hydrogen bis-[α-hexa-molybdoplatinate(IV)] undeca-hydrate.
abstract: Previously reported at a temperature of 298 (2) K [Lee & Joo (2007 ▶). Acta Cryst. E63, i11-i13], the title compound, K(7)[H(9)α-Pt(2)Mo(12)O(48)]·11H(2)O or K(7)[H(4.5)α-PtMo(6)O(24)](2)·11H(2)O, was redetermined at 146 (2) K in order to determine whether the H atom in the hydrogen bond that crosses the center of symmetry was located at the center of symmetry or disordered around it as assumed in the previous study. During the present low-temperature study it was found on the center of symmetry. One water molecule shows half-occupancy.
authors.forename: Uk
authors.initials: U
authors.lastname: Lee
authors.forename: Hea-Chung
authors.initials: HC
authors.lastname: Joo
authors.forename: Ki-Min
authors.initials: KM
authors.lastname: Park