Y4O2(CN2)3Cl2, Its Relation to the Metal-Rich Y2Cl3, and the Photoluminescence of Y4O2(CN2)3Cl2:Ce

Abstract Y 4 O 2 (CN ) 3 Cl and some isotypic rare earth ( RE carbodiimides = Sm, Gd, Tb) were prepared by solid-state metathesis reaction between , OCl Li CN . The crystal structure of was solved refined from single-crystal XRD data with the monocline space group C2/m Homologous compounds Tb assigned isotypically means powder diffraction. is characterized one-dimensional cluster chains which are showing a striking resemblance to trans-edge bridging 6 -octahedra in structures β -Y N, N(CN )Cl, despite different numbers electrons. Crystals appear as transparent rods. presence (NCN) 2− ions confirmed infrared spectroscopy. doped Ce 3+ photoluminescent material that an emission band orange region (λ 550 nm) visible spectrum.