Macrocyclic ligands for uranium complexation: Progress report, August 15, 1986--January 28, 1989
Macrocycles, designed for complexation of the uranyl ion by computer modeling studies and utilizing six ligating atoms in the equatorial plane of the uranyl ion, have been prepared and their ability to complex the uranyl ion evaluated. The ligating atoms, either oxygen or sulfur, were part of acylurea, biuret or thiobiuret subunits with alkane chains or pyridine units completing the macrocyclic periphery. The macrocycles studied formed uranyl complexes in solution but no crystalline complexes have been isolated to date. Acyclic ligands containing the same atoms in equivalent functional entities were found to form a crystalline 1:1 uranyl-ligand complex whose structure was established by X-ray data. This complex underwent a facile, DMSO-induced rearrangement to a 2:1 uranyl-ligand complex whose structure was also established by X-ray data. The intermediates to the macrocycles all behave as excellent ligands for the complexation of transition metals. Acylthiourea complexes of copper and nickel as well as intermolecular, binuclear copper and nickel complexes of bidentate carbonyl thioureas formed readily and their structures were established in several representative instances by X-ray structural determinations. Tetradentate bis(carbonylthioureas) were found to be very efficient selective reagents for the complexation of copper in the presence of nickel ions. 21 refs., 7 figs., 10 tabs.
- Research Organization:
- Rensselaer Polytechnic Inst., Troy, NY (USA). Dept. of Chemistry
- DOE Contract Number:
- FG02-86ER13583
- OSTI ID:
- 6414559
- Report Number(s):
- DOE/ER/13583-3; ON: TI89006910
- Resource Relation:
- Other Information: Paper copy only, copy does not permit microfiche production
- Country of Publication:
- United States
- Language:
- English
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Macrocyclic ligands for uranium complexation
Macrocyclic ligands for uranium complexation: Progress report, August 15, 1987-present
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPPER COMPLEXES
CHEMICAL PREPARATION
LIGANDS
NICKEL COMPLEXES
URANYL COMPLEXES
ABSORPTION SPECTRA
CARBONYLS
CHELATES
HYDROGEN 1
MOLECULAR STRUCTURE
NMR SPECTRA
ORGANIC SULFUR COMPOUNDS
PROGRESS REPORT
RECOVERY
THIOUREAS
ACTINIDE COMPLEXES
CARBONIC ACID DERIVATIVES
COMPLEXES
DOCUMENT TYPES
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
URANIUM COMPLEXES
400201* - Chemical & Physicochemical Properties