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Neptunium(V) Complexes with Lipophilic N‐Donor Extractant Ligands
Author(s) -
Andreev Grigory,
Budantseva Nina
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202004025
Subject(s) - chemistry , neptunium , crystal structure , ligand (biochemistry) , crystallography , pentagonal bipyramidal molecular geometry , terpyridine , coordination complex , infrared spectroscopy , stereochemistry , inorganic chemistry , actinide , metal , organic chemistry , biochemistry , receptor
Neptunium(V) complexes with N‐donor lipophilic extractants, 2,2′:6′,2′′‐terpyridine (Terpy), 2,4,6‐tri‐2‐pyridyl‐1,3,5‐triazine (TPTZ), and 6,6’‐bis(5,6‐diethyl‐1,2,4‐triazin‐3‐yl)‐2,2’bipyridine (C2‐BTBP), have been synthesized and characterized by X‐ray crystallography as well as vis‐NIR and IR spectroscopy. The structures display coordination of one N‐donor ligand to the NpO 2 + group. In all cases, the Np atom is found in a pentagonal bipyramidal coordination environment. The structures exhibit 0D topologies, except the neptunium formate complex with terpyridine, where the anion acts as a bridging ligand and forms an infinite chain structure. The complex with C2‐BTBP is the first example of a structurally characterized Np complex with this ligand. Vis‐NIR and IR spectra of the compounds correlate with their crystal structures.