New Scandium‐containing Coordination Polymers with Linear Linker Molecules: Crystal Structures and Luminescence Properties

Two new scandium‐containing coordination polymers, with the formulae {(CH 3 ) 2 NH 2 }[Sc(BPDC) 2 ] ( 1 ) and [Sc(OH) (BPyDC)] ( 2 ) were solvothermally synthesized by using the linear linker molecules biphenyl‐4,4'‐dicarboxylic acid (H 2 BPDC) and 2,2'‐bipyridine‐5,5'‐dicarboxylic acid (H 2 BPyDC). Crystal structures were determined from single‐crystal and powder X‐ray diffraction data, respectively. The crystal structures of 1 and 2 contain isolated ScO 6 or chains of trans corner‐sharing ScO 6 octahedra as the inorganic building unit (IBU), which are connected by the linker molecules to a 3D framework or a layered structure, respectively. The compounds were characterized by IR‐spectroscopy, elemental analysis, thermogravimetric analysis and photoluminescence spectroscopy. 1 shows blue emission at 400 nm, while 2 exhibits intense green emission at 550 nm with a high quantum yield (QY) of 69 %.