Structural and spectroscopy studies of complexes of the uranyl ion with 2,2′-bipyridine-N,N′-dioxide

Complexation of thorium with pyridine monocarboxylate-N-oxides: Thermodynamic and computational studies

“…The flexible N-oxide functionalization of pyridine monocarboxylic acid-N-oxides enhances their capacities for coordination and/or hydrogen bonding resulting in different characteristics of metal pyridine monocarboxylate-N-oxide complexes as compared with the corresponding pyridine monocarboxylates complexes [25]. Many studies have reported the solid state characterization of uranyl [49][50][51][52][53] and thorium [53][54][55][56][57][58][59][60] complexes with different aromatic-N-oxides but the studies on actinide complexes with pyridine monocarboxylic acid-Noxides, in particular, are very limited. Many studies have reported the solid state characterization of uranyl [49][50][51][52][53] and thorium [53][54][55][56][57][58][59][60] complexes with different aromatic-N-oxides but the studies on actinide complexes with pyridine monocarboxylic acid-Noxides, in particular, are very limited.…”

Investigation on the Synthesis and Photocatalytic Property of Uranyl Complexes of the β-Diketonates Biscatecholamide Ligand

“…were assigned to the C=O stretching vibration of amide groups of free ligands, which shifted to 1588 cm −1 in its corresponding complexes; meanwhile, the peaks at 1266 cm were assigned to the asymmetric stretching modes of the uranyl moiety [25][26][27]. Therefore, analytical results of the International Journal of Photoenergy FTIR spectra indicated uranyl ion complexes were to be obtained.…”

Novel Lanthanide(III) Ternary Complexes with Naphthoyltrifluoroacetone: A Synthetic and Spectroscopic Study

“…The sketching frequency of N-O bonds in free bpyO1 and bpyO2 are 1252 and 1255 cm -1 , respectively. [17,18] 1 H-NMR spectrum of 1a, the proton signal of water was not observed due to its rapid exchange with MeOD. For 2-4a, the presence of phen, bpyO1, and bpyO2 is evidenced by an extra set of signals in the aromatic region in addition to those of the napthalene rings.…”

“…The N-O bond lengths (1.303-1.349 Å) lie in the normal range of N-oxide metal complexes. [11,17,18] Interestingly, compounds 2c and 4b exhibit large π-π stacking in solid state (Figure 1b and Figure 3c). 2c shows the overlap mainly between naphthalene ring and diketonate moiety of adjacent molecules.…”