Monoclinic, O-Si-Y, Si-x polyhedra

• N-O-Si-Y
• O-Sc-Si-Y
• Al-N-O-Si-Y
• Na-O-Si-Y
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• mechanical properties
• Seebeck coefficient
• transitional
• rare earth
• chalcogen
• metalloid