Synthesis, structure and properties of an octahedral dinuclear-based Cu12 nanocage of trimesoyltri(l-alanine)†
The reaction of a three-armed ligand of trimesoyltri(L-alanine) (TMTAH3) with CuCl2 gave [Cu12(TMTA)8(H2O)12]·8CH3CH2OH·40H2O (1) as expected. It features paddlewheel dinuclear secondary building blocks, six of which are connected by eight TMTA3− linkers, forming a Mo6C184+-like dinuclear-based octahedral nanocage. The magnetic studies revealed the presence of antiferromagnetic interactions between the Cu(II) ions in 1. The desolvated sample of 1 presents nice selectivity on the adsorption of H2 and CO2 over CH4.