Inorganic Chemistry, Vol.59, No.23, 16804-16808, 2020
Chemistry of Metal Silicates and Germanates: The Largest Metal Polygermanate, K11Mn21Ge32O86 (OH)(9)(H2O), with a 76 angstrom Periodic Lattice
An examination of manganese silicates and germanates revealed unusual structural motifs and extremely different chemistries, with identical hydrothermal reactions forming K2Mn2Si3O9 versus K11Mn21Ge32O86 (OH)(9)(H2O). The germanate is exceptional in both its c-axis length (exceeding 76 angstrom) and unit cell volume (nearly 18000 angstrom(3)), the largest known polygermanate structure to our knowledge.