inorganic compounds
The two-dimensional network topology of the mixed alkali title compound, K1.33Na0.67Si2O5, is found to differ from that of the end-member compositions, Na2Si2O5 and K2Si2O5. The network of the silicate sheet consists of rings with four, six and eight SiO4 tetrahedra. The cations are sandwiched between the silicate sheets.
organic compounds
The title compound, C36H28O2P2, features weak inter- and intramolecular hydrogen bonds linking molecules into infinite chains.