Title

Supramolecular Assembly of Metal-Organic Tubes Constructed from the Ditopic Heteroscorpionate Ligand (4-NH2C6H4)CHpz2 (pz = Pyrazol-1-yl) and Silver(I)

Document Type

Article

Language

eng

Format of Original

11 p.

Publication Date

6-2016

Publisher

Wiley-VCH Verlag

Source Publication

European Journal of Inorganic Chemistry

Source ISSN

1434-1948

Abstract

The possibility of constructing tubular metal-organic structures with aid of weak hydrogen-bonding interactions between suitably designed metallacycles was explored. For this purpose, the new heteroditopic ligand (4-NH2C6H4)CHpz2 (L1) was prepared in good (75 %) yield by a one-pot procedure starting from commercial 4-acetamidobenzaldehyde. The equimolar reactions between L1 and various silver(I) salts gave the intended 1:1 complexes in which the metallacycles were assembled into tubes. However, the exact nature of the assemblies (including their solvate compositions) varied depending on anion, solvent, and concentration of the original crystallization solution. For the trifluoromethanesulfonate anion, a hexameric structure was observed, whereas cyclic dimers were obtained for other anions. In the case of PF6, an unusual, opened-cycle structure with the composition [(L1)Ag(μ-L1)Ag(CH3CN)2]2+ was also identified crystallographically. The capacity for desolvated tubular structures to be used for gas adsorption was also investigated.

Comments

European Journal of Inorganic Chemistry, Vol. 2016. No. 15-16. (2016): 2615-2625. DOI.