Uranium complexes of cyclic O,O-bidentate ligands with the P–N–P backbone

Controlled Deprotection and Reorganization of Uranyl Oxo Groups in a Binuclear Macrocyclic Environment

“…The O5O6 bond length is 1.433(7) Å and is characteristic of peroxide; charge balance is maintained by retention of the two potassium cations which coordinate to the exo ‐uranyl oxo atom O1, the bridging peroxide atoms O5 and O6, and the O2 and O4 atoms of separate Pacman molecules (see the Supporting Information). Although numerous uranyl peroxide complexes are known, they are formed exclusively by ligand exchange between uranyl(VI) precursors 19. In contrast, compound 3 is the first uranyl peroxide complex formed by a redox reaction, adding to the wealth of small molecule activation chemistry known for uranium complexes 20.…”

Synthesis and Coordination Properties of Tripodal Ligand on the Triphenylphosphine Oxide Platform with Carbamoyl Side Arms

“…33,37,38 Signal broadening in the 31 P NMR spectra of uranyl complexes with phosphoryl ligands is usually insignificant (10-20 Hz) because uranium(VI) cation is Downloaded by [Florida State University] at 07:49 01 November 2014 diamagnetic. The considerable broadening of the NMR signals in the spectrum of complex 3 seems to indicate slow exchange processes within the same molecule or the existence of several forms of complexes.…”

Two single-enantiomer amidophosphoesters: a database study on the chirality of (O)2P(O)(N)-based structures

“…The amidophosphoester families, especially the chiral ones, are well known for possessing interesting biologicalproperties and for their application in the preparation of different classes of drugs (Warren et al, 2016). Amidophosphoesters have also been used as oxygen-donor ligands in coordination chemistry (Aladzheva et al, 2011) and as flame-retardant compounds in polymer additives (Nguyen & Kim, 2008).…”