Novel mononuclear mixed ligand Ce(III) pivalate with protonated cationic form of monoethanolamine as ancillary ligand

The mononuclear mixed ligand Ce(III) pivalate with protonated cationic form of monoethanolamine (MEA) as ancillary ligand is reported. Crystal structure consists of mononuclear complex anions [Ce(Piv)5(HOCH2CH2NH3)]− (HPiv–2,2-dimethylpropionic (pivalic) acid) and cations [HOCH2CH2NH3]+ connected by hydrogen bonds into hexagonal layers packed over α-graphite motif. Central cerium ion coordinates six oxygen atoms of three bidentate chelate Piv− ligands, two O atoms of two monodentate pivalate ligands and one — of MEA in N-protonated cationic form. Five tert-butyl groups of pivalate ligands shield cerium(III) ion that facilitates coordination of ancillary ligand with positive charge on its peripheral part.