A Metalloligand Approach for the Self-Assembly of a Magnetic Two-Dimensional Grid-of-Grids

• Published in: Crystal growth & design 2019-07, Vol.19 (7), p.3905-3912
• Main Authors: Kalinke, Lucas H. G, Cangussu, Danielle, Lloret, Francesc, Bruno, Rosaria, Armentano, Donatella, Pardo, Emilio, Ferrando-Soria, Jesús
• Format: Article
• Language: English
• ISSN: 1528-7483; 1528-7505
• DOI: 10.1021/acs.cgd.9b00324

The efficient organization of discrete functional molecules into extended frameworks, while retaining their physical properties, is a mandatory requisite to move toward applications. Here we describe the validity of the metalloligand design strategy as a versatile and powerful approach to build up a two-dimensional (2D) magnetic metal–organic framework (MOF) composed of preformed discrete antiferromagnetically coupled [3 × 3] Cu9 II incomplete grids. In the first stage, a novel oxamato-based nonanuclear copper­(II) complex has been self-assembled from the reaction of a polytopic organic ligand, with well-defined coordination pockets, with CuII ions. Then, the nonanuclear complex has been used as metalloligand toward calcium­(II) cations to afford a CaII–CuII 2D MOF (1) with a grid-like topology and the magnetic properties of the preformed nonanuclear grids.