Suprachannels via a Molecular Array of 2D Networks: Solvent Effects, Anion Exchange, and Physicochemical Properties of Silver(I) Complexes Bearing N,N′,N″‑Tris(2-pyridinylethyl)-1,3,5-benzenetricarboxamide
journal contributionposted on 2014-04-02, 00:00 authored by Euni Kim, Haeri Lee, Tae Hwan Noh, Ok-Sang Jung
The solvent effects on suprachannel formation via a molecular array of 2D networks were studied. The basic structure of the [Ag3L2](X)3 (X– = NO2–, NO3–) 2D network consists of hexagonal (Ag6L6) motifs formed via self-assembly of Ag(I) with C3-tridentate N-donors. The 2D networks are arranged in an eclipsed mode in aqueous solution, thus forming suprachannels (5.2 × 7.3 Å2, 6.2 × 7.7 Å2) of [Ag3L2(H2O)2](X)3, whereas they are arranged in a staggered abab... mode in nonaqueous solution, thus forming semisuprachannels (3.1 × 5.1 Å2) of [Ag3(NO3)2L2](NO3). The suprachannel structure of [Ag3L2(H2O)2](NO3)3 is soluble in methanol; contrastingly, the semisuprachannel structure of [Ag3(NO3)2L2](NO3) is insoluble in that solvent. In the present study, significant differences in molecular recognition and anion exchangeability between [Ag3L2(H2O)2](NO3)3 and [Ag3(NO3)2L2](NO3) were found.