Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

To thread or not to thread: Reaction of uranyl (UO22+) with two Aza-crown macrocycles

Journal Article · · Polyhedron
The complexation of the uranyl ion (UO22+) by macrocyclic ligands is hindered by the rigidly enforced trans orientation of its oxo ligands. To further investigate this coordination chemistry challenge, here we investigate the reactivity of UO22+ with two different 18-membered aza-crown macrocycles, diaza-dibenzo-18-crown-6 (DADBC) and 7,16-bis(N-methylacetamide)diaza-18-crown-6 (BAM). The reaction of uranyl triflate, [UO2(OTf)2(THF)3], with DADBC in toluene afforded [UO2(DADBC)][OTf]2, in which the UO22+ ion is fully encapsulated by the macrocycle. This conclusion was supported by NMR, UV–Vis, IR, and Raman spectroscopies, as well as single-crystal X-ray crystallography. Attempts to form the in-macrocycle complex of BAM, however, were unsuccessful. Here, the reaction of BAM with [UO2(OTf)2(THF)3] in THF/CH2Cl2 unexpectedly afforded crystals of [H2BAM][OTf]2, where the protons are derived from solvate water in the BAM crystal lattice.
Research Organization:
University of California, Santa Barbara, CA (United States)
Sponsoring Organization:
National Institutes of Health (NIH); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
SC0001861
OSTI ID:
3014812
Journal Information:
Polyhedron, Journal Name: Polyhedron Vol. 285; ISSN 0277-5387
Publisher:
Elsevier BVCopyright Statement
Country of Publication:
United States
Language:
English

References (75)

Hexaphyrin(1.0.1.0.0.0): An Expanded Porphyrin Ligand for the Actinide Cations Uranyl (UO22+) and Neptunyl (NpO2+) journal January 2001
Subtleties with Sulfur: Calixarenes as Uranophiles journal February 2001
Single-Electron Uranyl Reduction by a Rare-Earth Cation journal December 2010
Oxo Group Protonation and Silylation of Pentavalent Uranyl Pacman Complexes journal August 2011
Controlled Deprotection and Reorganization of Uranyl Oxo Groups in a Binuclear Macrocyclic Environment journal November 2012
Ligand‐Directed Actinide Oxo‐Bond Manipulation in Actinyl Thiacalix[4]arene Complexes journal February 2025
Hexaalkyl Terpyrrole: A New Building Block for the Preparation of Expanded Porphyrins journal April 1995
The Effect of the Equatorial Environment on Oxo-Group Silylation of the Uranyl Dication: A Computational Study journal March 2010
Oxo-Group-14-Element Bond Formation in Binuclear Uranium(V) Pacman Complexes journal June 2013
f-Element/crown ether complexes, 11. Preparation and structural characterization of [UO2(OH2)5] [ClO4]2�3(15-crown-5)�CH3CN and [UO2(OH2)5] [ClO4]2�2(18-crown-6)�2 CH3CN�H2O journal October 1987
Selective complexation of UO 2 2+ by the calix[6]arene6? anion: Structure and hydration studied by molecular dynamics simulations journal January 1993
Macrocycle complexation chemistry. 37. The isolation and crystallographic characterization of the U4+ and UO2+ extraction complexes [(H5O2)(dicyclohexano-24-crown-8)]2[U02Cl4]?MeOH and [(H5O2) (dicyclohexano-24-crown-8)]2[UCl6]?MeOH journal September 1991
Synergistic extraction of Am(III), Th(IV) and U(VI) by PMBP and crown ethers journal November 1989
Infrared spectra of some uranyl nitrate complexes journal September 1967
Mid-, far-infrared and raman spectra of uranyl complexes in aqueous solutions journal January 1984
Vibrational dynamics and phase transition in uranyl Nitrate Dihydrate (Dideuterate), UO2(NO3)2·2H2O (2D2O) through Raman spectroscopy journal May 1992
Actinide expanded porphyrin complexes journal June 2001
Crystal and molecular structure of uranyl nitrate trimethylphosphate journal January 1982
Anhydrous uranyl crown-ether complexes. 1H nuclear magnetic resonance and x-ray study journal January 1979
Novel, terpyrrole-containing, aromatic expanded porphyrins journal April 2001
Complexation of the uranyl ion by crown ethers, diaza-crown ethers and analogous acyclic ligands in solution journal January 1989
The crystal and molecular structure of UO2(NO3)2[Ph2P(O)CH2C(O)Ph]2 and its role in the solvent extraction of the uranyl ion journal January 1989
Crystal structures of the dicyclohexyl-(18-crown-6) uranyl perchlorate complex and of its hydrolysis product journal January 1984
Oxo ligand functionalization in the uranyl ion (UO22+) journal February 2010
Detection and identification of solids, surfaces, and solutions of uranium using vibrational spectroscopy journal November 2018
Coordination of bistriflimide and triflate to the uranyl bis(diphenylphosphino)methane dication, {UO2(DPPMO2)2}2+ journal February 2009
A combined experimental and quantum chemical studies on the structure and binding preferences of picolinamide based ligands with uranyl nitrate journal October 2019
Evaluating Best Practices in Raman Spectral Analysis for Uranium Speciation and Relative Abundance in Aqueous Solutions journal December 2015
Coordination of Uranyl to the Redox-Active Calix[4]pyrrole Ligand journal June 2020
Oxo Ligand Substitution in a Cationic Uranyl Complex: Synergistic Interaction of an Electrophile and a Reductant journal July 2015
Perturbation of the O–U–O Angle in Uranyl by Coordination to a 12-Membered Macrocycle journal May 2016
Uranyl Coordination by the 14-Membered Macrocycle Dibenzotetramethyltetraaza[14]annulene journal May 2017
Uranyl/12-crown-4 Ether Complexes and Derivatives: Structural Characterization and Isomeric Differentiation journal December 2017
Oxidation of the 14-Membered Macrocycle Dibenzotetramethyltetraaza[14]annulene upon Ligation to the Uranyl Ion journal June 2018
Coordination Structures of Uranium(VI) and Plutonium(IV) in Organic Solutions with Amide Derivatives journal January 2020
Molecular and Crystal Structures of Uranyl Nitrate Complexes with N-Alkylated 2-Pyrrolidone Derivatives: Design and Optimization of Promising Precipitant for Uranyl Ion journal May 2008
Synthesis and structural elucidation of novel uranyl-crown ether compounds isolated from nitric, hydrochloric, sulfuric, and acetic acids journal June 1991
Synthesis and x-ray characterization of a uranyl(VI) Schiff base complex derived from a 2:2 condensation product of 3,4-diethylpyrrole-2,5-dicarbaldehyde and 1,2-diamino-4,5-dimethoxybenzene journal February 1992
Coordination Trends in Alkali Metal Crown Ether Uranyl Halide Complexes:  The Series [A(Crown)] 2 [UO 2 X 4 ] Where A = Li, Na, K and X = Cl, Br journal July 2001
Discussion on the complexing ability of the uranyl ion with several crown ethers and cryptands in water and in propylene carbonate journal January 1985
Uranyl Complexation by a Schiff-Base, Polypyrrolic Macrocycle journal December 2004
Steric Effects on Uranyl Complexation: Synthetic, Structural, and Theoretical Studies of Carbamoyl Pyrazole Compounds of the Uranyl(VI) Ion journal April 2012
Crown Ether Complexes of Uranyl, Neptunyl, and Plutonyl: Hydration Differentiates Inclusion versus Outer Coordination journal May 2014
Structure of di-.mu.-aquo-bis(dioxobis(nitrato)uranium(VI)) diimidazole, [UO2 (NO3)2(H2O)].2C3H4N2, a water bridged dimer of uranyl nitrate journal April 1980
The Role of Peripheral Alkyl Substituents:  A Theoretical Study of Substituted and Unsubstituted Uranyl Isoamethyrin Complexes journal January 2008
Crown Ether Inclusion Complexes of the Early Actinide Elements, [AnO 2 (18-crown-6)] n + , An = U, Np, Pu and n = 1, 2: A Relativistic Density Functional Study journal March 2008
Hydration of uranyl (UO22+) cation and its nitrate ion and 18-crown-6 adducts studied by molecular dynamics simulations journal May 1993
Uranylpentaphyrin: an actinide complex of an expanded porphyrin journal June 1991
Kinetics and mechanisms of complex formation of uranyl ion with 18-crown-6 and diaza-18-crown-6 ligands in propylene carbonate journal October 1985
Selective Oxo Functionalization of the Uranyl Ion with 3d Metal Cations journal August 2006
Oxo-Functionalization and Reduction of the Uranyl Ion through Lanthanide-Element Bond Homolysis: Synthetic, Structural, and Bonding Analysis of a Series of Singly Reduced Uranyl–Rare Earth 5f 1 -4f n Complexes journal March 2013
Uranium-Mediated Peroxide Activation and a Precursor toward an Elusive Uranium cis-Dioxo Fleeting Intermediate journal April 2023
Synthesis, Isolation, and Study of Heterobimetallic Uranyl Crown Ether Complexes journal March 2024
Determination of the Molecular Structures of Ferric Enterobactin and Ferric Enantioenterobactin Using Racemic Crystallography journal October 2017
Redox-Inactive Metal Cations Modulate the Reduction Potential of the Uranyl Ion in Macrocyclic Complexes journal January 2020
Actinyls in Expanded Porphyrin:  A Relativistic Density-Functional Study journal February 2004
Electronic Structure and Bonding in Actinyl Ions and their Analogs journal May 2007
Synthesis and crystal structure of supramolecular adduct of tetranuclear uranyl chloride aquacomplex with macrocyclic cavitand cucurbituril journal February 2002
Reduction and selective oxo group silylation of the uranyl dication journal January 2008
Strongly coupled binuclear uranium–oxo complexes from uranyl oxo rearrangement and reductive silylation journal February 2012
Uranyl oxo activation and functionalization by metal cation coordination journal November 2010
Electronic structure and characterization of a uranyl di-15-crown-5 complex with an unprecedented sandwich structure journal January 2016
Characterization of the binding of six actinyls AnO 2 2+/+ (An = U/Np/Pu) with three expanded porphyrins by density functional theory journal January 2017
Understanding the origins of O yl –U–O yl bending in the uranyl (UO 2 2+ ) ion journal January 2018
Macrocyclic control of electron transfer to high valent uranium in heterobimetallic complexes journal January 2025
Synthesis and characterization of an oxasapphyrin-uranyl complex journal January 1998
Novel unidentate co-ordination of a crown ether and of a polyethylene glycol to uranium(VI) journal January 1989
Actinide complexes of the calixarenes. Part 1. Syntheses and crystal structures of bis(homo-oxa)-p-tert-butylcalix[4]arene and its uranyl ion complex journal January 1991
Étude cinétique de la complexation de l'ion uranyle par l'éther-couronne 18C6 dans l'acétonitrile journal January 1989
Evidence of the Uranium iii and Uranyl Complexation by Macrocycles From Exafs journal December 1986
Synthesis and Structural Characterization of the Monodentate 12-Crown-4 And Hexaethylene Glycol Complexes of Uranium(VI): [UO 2 Cl 2 (OH 2 ) 2 (12-CROWN-4)].12-Crown-4 And UO 2 Cl 2 (OH 2 ) 2 (Hexaethylene Glycol) journal January 1992
Röntgenstrukturanalyse von diaquadinitratodioxouran(VI)–1,4,7,10,13-pentaoxacyclopentadecan journal August 1989
Structure of bis(ε-caprolactam)dinitratodioxouranium(VI) journal November 1993
Pentaaquadioxouranium(VI) triflate–18-crown-6 journal October 1994
An Inclusion Complex of Uranyl in a Diazacrown: (Diaza-18-crown-6)2+.2CF3SO3− and [UO2(diaza-18-crown-6)]+.CF3SO3− journal May 1995

Similar Records

Synthesis and characterization of a chiral, aza-15-crown-5-functionalized ferrocenyldiphosphine ligand for asymmetric catalysis
Journal Article · Sun Mar 19 23:00:00 EST 2000 · Organometallics · OSTI ID:20050906

Synthesis, Isolation, and Study of Heterobimetallic Uranyl Crown Ether Complexes
Journal Article · Wed Mar 27 20:00:00 EDT 2024 · Journal of the American Chemical Society · OSTI ID:2438924