Abstract
The new title ligand HH* dappt reacts with [UO2][NO3]2.6H2O in ethanol to give [UO2(Hdappt)][NO3](1) in which the ligand is co-ordinated in its semienolized monodeprotonated form, with formation of four fused five-membered rings around the uranyl moiety. The related complex [UO2(Hdappt)][BPh4](2) has been synthesized by the action of an excess of Na[Bph4] on (1). Compounds (1) and (2) when treated with a number of non-hydroxylated bases are transformed to deep violet [UO2(dappt)](3) which, owing to the presence of only one reactive U–N covalent bond, reacts with hydroxylated species such as benzoic and acetic acid to give monomeric products in which the equatorial co-ordination number is increased from five to six; [UO2(Hdappt)(O2CC6H5)](4) and [UO2(Hdappt)(O2CCH3)](5), in both of which the carboxylate group is unidentate, have been isolated. Both the ligand and complexes have been characterized by physicochemical measurements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
