Synthesis, structure, and optical properties of lanthanum(III), cerium(III), praseodymium(III), and nickel(II) heterometallic complexes with glycine

Crystal structure and void analysis of tris(2-amino-1-methylbenzimidazolium) hexakis(nitrato-κ2 O,O′)lanthanate(III)

“…The nitrato ligands in the resulting [La(NO 3 ) 6 ] 3anion surround the La III atom in a highly distorted icosahedral environment. Bond lengths and angles in the [La(NO 3 ) 6 ] 3anion show no significant deviations from those of other structures where the La III atom is coordinated by nitrate anions and/or water molecules (Drew et al, 1998;Fowkes & Harrison, 2006;Skelton et al, 2019;Polyzou et al, 2012;Bezzubov et al, 2017).…”

“…The structure of the molecular [La(NO 3 ) 6 ] 3anion was first reported by Drew et al (1998) C 8 H 10 N 3 ) 3 [La(NO 3 ) 6 ] 649 Structural Database (CSD, version 5.42, update of September 2021; Groom et al, 2016) revealed that there are six other reports of this moiety. One was obtained from the synthesis of a dinuclear Ni II /La III complex containing the rare-earth metal in separate ions (Polyzou et al, 2012), the second in research into materials with luminescent properties for developing new drugs (Esteban-Parra et al, 2020), the third is a lanthanum/ peptide heterometallic complex with interesting optical properties (Bezzubov et al, 2017), the forth was studied during synthesis and theoretical calculations at the DFT level of di-La complexes with a pendant-armed macrocycle (Ferna ´ndez-Ferna ´ndez et al, 2006), the fifth is a heteronuclear nitrato lanthanide complex with interesting magnetic properties (Thatipamula et al, 2019), and the sixth is a pyridine imidazolium lanthanum complex (Skelton et al, 2019). The crystal structure of the last compound comprises the anionic unit as ideal [La(NO 3 ) 6 ] 3-, i.e.…”