ArticleInorganic chemistry2026
Metallophilicity Under Confinement: The Iminopyrrole Cage Promoting the Hg
Article in Inorganic chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
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.
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