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Metallophilicity Under Confinement: The Iminopyrrole Cage Promoting the Hg II ···M II (M = Hg, Cd) Interactions
Autorzy
Rok wydania
2026
Czasopismo
Numer woluminu
65
Strony
5280-5285
DOI
10.1021/acs.inorgchem.6c00290
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Self-assembly of 2,5-diformylpyrrole, tris(2-aminoethyl)amine, and Cd(II) or Hg(II) affords homobimetallic cryptates. In contrast, the synthesis of heterobimetallic Zn(II)–Cd(II) and Cd(II)–Hg(II) cages requires a stepwise approach involving a monocadmium(II) precursor. The bis-mercury(II) cryptate exhibits a pronounced mercurophilic interaction, as evidenced by a short Hg···Hg separation of 3.0549(7) Å. Notably, a similarly close intracavity contact is observed for the Cd(II)–Hg(II) system, with a M···M distance of ca. 3.1 Å. The participation of the metal centers in the attractive interaction─enforced by confinement within the iminopyrrole cage─was verified through the density functional theory (DFT) calculations of bond indices and was further corroborated by QTAIM analysis.
Słowa kluczowe
Ethers, Macrocyclic compounds, Metal clusters, Metals, Self organization
Adres publiczny
http://dx.doi.org/10.1021/acs.inorgchem.6c00290
Strona internetowa wydawcy
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