Solution and structural studies of the Cd(II) – Aconitate system

The complexing ability of the binary system trans-aconitic acid (H3L) with regard to Cd(II) and the crystal structures of the binary system Cd(II)–(H3L), [Cd3L2(H2O)6] n(1) and ternary systems of Cd(II)–(H3L)–Lewis base [Lewis base = 1,10-phenanthroline (2) and 2,2′-bipyridine (3)] have been determined. Compound 1 is a rare binodal four-connected three-dimensional (3D) metal-organic framework possessing a moganite (mog) topology. Compounds 2 and 3 represent infinite one-dimensional (1D) chains forming three-dimensional metal-supramolecular structures through H-bond and π–π stacking interactions. All compounds have been characterized by spectroscopic and thermogravimetric techniques.

Graphical abstractThe complexing ability of the binary system trans-aconitic acid (H3L) with regard to Cd(II) and the crystal structures of the binary system Cd(II)–(H3L), [Cd3L2(H2O)6] (1) and ternary systems of Cd(II)–(H3L)–Lewis base [Lewis base = 1,10-phenanthroline (2) and 2,2′-bipyridine (3)] have been determined.Figure optionsDownload full-size imageDownload as PowerPoint slide