Two Homochiral Bimetallic Metal–Organic Frameworks Composed of a Paramagnetic Metalloligand and Chiral Camphorates: Multifunctional Properties of Sorption, Magnetism, and Enantioselective Separation

Two porous metal–organic frameworks [Co­(Tt)₂]­[Cu₄(D-cam)₄]·5H₂O·DMF (1; Tt = tris­(triazolyl)­borate, D-H₂cam = d-(+)-camphoric acid or (1R,3S)-1,2,2-trimethyl-1,3-cyclopentane­dicarbox­ylic acid) and [Co­(Tt)₂]­[Cu₄(L-cam)₄]·5H₂O·2DMF (2; L-H₂cam = l-(−)-camphoric acid or (1S,3R)-1,2,2-trimethyl-1,3-cyclo­pentane­dicarbox­ylic acid) were prepared by mixing Cu²⁺, Co­(Tt), and camphoric acid under solvothermal conditions. The structures of 1 and 2 reveal that the two-dimensional layers composed of chiral ligands and Cu-Cu paddlewheel units are connected through the metalloligands to form three-dimensional networks. It is noted that these solids show multi­functional properties such as gas adsorption onto the pores of the frameworks, antiferromagnetic coupling between spin carriers, and a small enantioselective separation of racemic alcohols.