The heating of a mixture of as-precipitated scandium hydroxide and tetrafluoroterephthalic acid in ethylene glycol leads to the formation of the complex [Sc 2 (HOCH 2 CH 2 OH) 4 (tFBDC) 3 ]·2HOCH 2 CH 2 OH (tFBDC 2− = tetrafluoroterephthalate) (1). According to the X-ray data, compound 1 is a chain coordination polymer. Sc(III) cations and tFBDC 2− anions form double chains (ribbons). The coordination number of Sc(III) is completed to seven by ethylene glycol molecules acting as chelate ligands. There is a complex system of hydrogen bonding interactions induced by oxygen atoms of carboxylic groups of perfluorinated ligands and coordinated and lattice ethylene glycol.
- crystal structure
- metal-organic coordination polymer
- scandium complexes
- tetrafluoroterephthalic acid