Monoclinic, Optical properties, Quaternary, Zaacab

• B-Br-Mg-N
• H-I-Mg-O
• Br-Cr-O-P
• Co-H-I-O
• H-I-Ni-O
• phonons
• Raman spectra
• infrared spectra
• wavenumber of optical phonon
• vibrational spectra
• quaternary
• non-disordered
• chalcogen
• halogen
• transitional