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Gold-Based Coronands as Hosts for M[sup.3+] Metal Ions: Ring Size Matters
Molecules (Basel, Switzerland), 2023-07, Vol.28 (14)
[Peer Reviewed Journal]
COPYRIGHT 2023 MDPI AG ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules28145421
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Title:
Gold-Based Coronands as Hosts for M[sup.3+] Metal Ions: Ring Size Matters
Author:
Sucena, Suelen Ferreira
;
Demirer, Türkan Ilgin
;
Baitullina, Anna
;
Hagenbach, Adelheid
;
Grewe, Jacqueline
;
Spreckelmeyer, Sarah
;
März, Juliane
;
Barkleit, Astrid
;
Maia, Pedro Ivo da Silva
;
Nguyen, Hung Huy
;
Abram, Ulrich
Subjects:
Real estate
developers
Is Part Of:
Molecules (Basel, Switzerland), 2023-07, Vol.28 (14)
Description:
The controlled, self-assembled synthesis of multinuclear coordination compounds can be performed via different approaches. Frequently, steric, geometric and/or electronic factors located at the ligand systems predefine the way in which metal ions can assemble them to large aggregates. For the compounds in the present paper, also the Pearson’s acidities and preferred coordination geometries of the metal ions were used as organization principles. The ligand under study, 2,6-dipicolinoylbis(N,N-diethylthiourea), H[sub.2]L1[sup.ethyl], possesses ‘soft’ sulfur and ‘hard’ nitrogen and oxygen donors. One-pot reactions of this compound with [AuCl(tht)] (tht = tetrahydrothiophene) and M[sup.3+] salts (M = Sc, Y, La, Ln, Ga, In) give products with gold-based {Au[sub.3](L1[sup.ethyl])[sub.3]}[sup.3+] or {Au[sub.2](L1[sup.ethyl])[sub.2]}[sup.2+] coronands, which host central M[sup.3+] ions. The formation of such units is templated by the M[sup.3+] ions and the individual size of the coronand rings is dependent on the ionic radii of the central ions in a way that small ions such as Ga[sup.3+] form a [Ga⊂{Au[sub.2](L1[sup.ethyl])[sub.2]}][sup.+] assembly, while larger ions (starting from Sc[sup.3+]/In[sup.3+]) establish neutral [M⊂{Au[sub.3](L1[sup.ethyl])[sub.3]}] units with nine-coordinate central ions.
Publisher:
MDPI AG
Language:
English
Identifier:
ISSN: 1420-3049
EISSN: 1420-3049
DOI: 10.3390/molecules28145421
Source:
GFMER Free Medical Journals
PubMed Central
Alma/SFX Local Collection
ProQuest Central
DOAJ Directory of Open Access Journals
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