Citation: Zhou Yaming; Chen Zhenxia; Liu Zhichen; Weng Linhong; Zhao Dongyuan (2003). (H3 O)4 Ge7 O16 * 3(H2 O) and K4 Ge9 O20: two microporous germanates constructed by Ge10 O28 units. Hua Hsueh Hsueh Pao, 61, pp. 382-387.
Formula: Ge9 K4 O20
Chemical name: K4 (Ge9 O20)
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ge36 K16 O80 (Ge9 K4 O20)
Multiplicity: 1
Coordination sequences: