Na8[NH4]2.5W20.5Sn1.5Bi2O71[OH]0.5[H2O]36.5 aP154 2

• Bi-H-N-Na-O-Sn-W
• optical properties
• phonons
• wavenumber of optical phonon
• structural properties
• vibrational spectra
• oxide
• hydroxide
• alkali
• chalcogen
• multinary
• triclinic