dc.contributor.author
Njiki Noufele, Christelle
dc.contributor.author
Schulze, Dennis
dc.contributor.author
Roca Jungfer, Maximilian
dc.contributor.author
Hagenbach, Adelheid
dc.contributor.author
Abram, Ulrich
dc.date.accessioned
2024-11-14T14:44:34Z
dc.date.available
2024-11-14T14:44:34Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/45664
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-45377
dc.description.abstract
2,6-Dipicolinoylbis(N,N-dialkylthioureas), H2LR, readily react with uranyl salts under formation of monomeric or dimeric complexes of the compositions [UO2(LR)(solv)] (solv = donor solvents such as H2O, MeOH or DMF) or [{UO2(LR)(µ-OMe)}2]2− (1). In such complexes, the uranyl ions are exclusively coordinated by the “hard” O,N,O or N,N,N donor atom sets of the central ligand unit and the lateral sulfur donor atoms do not participate in the coordination. Different conformations have been found for the dimeric anions. The bridging methanolato ligands and the four uncoordinated sulfur atoms can adopt different orientations with respect to the equatorial coordination spheres of the uranyl units. The presence of non-coordinated sulfur atoms offers the opportunity for the coordination of additional, preferably “soft” metal ions. Thus, reactions with [AuCl(PPh3)], lead acetate or acetates of transition metal ions such as Ni2+, Co2+, Fe2+, Mn2+, Zn2+, or Cd2+, were considered for the syntheses of bimetallic complexes. Various oligometallic complexes with uranyl units were prepared: [{UO2(LR)(μ-OMe)(Au(PPh3)}2] (2), [(UO2)3Pb2(LR)4(MeOH)2(μ-OMe)2] (3), [M{UO2(LR)(OAc)}2] (M= Zn, Ni, Co, Fe, Mn or Cd) (R = Et: 5, RR = morph: 6), or [(UO2)(NiI)2(LR)2] (7). The products were extensively studied spectroscopically and by X-ray diffraction.
en
dc.format.extent
26 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
transition metals
en
dc.subject
mixed-metal complexes
en
dc.subject
2,6-Dipicolinoylbis(N,N-dialkylthioureas)
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
dc.title
Bimetallic Uranium Complexes with 2,6-Dipicolinoylbis(N,N-Dialkylthioureas)
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
5001
dcterms.bibliographicCitation.doi
10.3390/molecules29215001
dcterms.bibliographicCitation.journaltitle
Molecules
dcterms.bibliographicCitation.number
21
dcterms.bibliographicCitation.originalpublishername
MDPI
dcterms.bibliographicCitation.volume
29
dcterms.bibliographicCitation.url
https://doi.org/10.3390/molecules29215001
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Chemie und Biochemie

refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1420-3049