A 2 Se 2 C 2 (A = Na–Cs): crystalline compounds featuring − Se–CC–Se − dianions with short-range structural disorder

Key Points

• The research aims to understand the crystal structures of A2Se2C2 compounds and their structural disorder.
• Combined conventional IR/Raman and Rietveld analyses
• DFT calculations
• Total scattering data analysis
• Identified short-range structural disorder in Se–CC–Se dianions
• Successfully solved crystal structures of A2Se2C2 compounds