Heteropentanuclear {Ru(II)Cu(II)} Kuratowski Complexes Assembled from a Ruthenium(II) Precursor Complex to Study Competing Exchange Interactions in M(II)(ta) Networks [ta(-) = 1,2,3-Triazolate].

We report a directed two-step synthesis toward pentanuclear Kuratowski complexes. First, six 5,6-dimethylbenzo[1,2,3]triazole ligands (MebtaH) are coordinated to a single Ru(II) ion, providing a topologically ideal template for the addition of further metal ions. The synthesis and crystal structures of [RuCuX(Mebta)] [X = acetylacetonate (acac) and tris(3,5-dimethyl-1-pyrazolyl)borate (Tp*)] are described.

Lanthanide Coordination Polymers and MOFs based on the Dicyanodihydridoborate Anion.

New lanthanide cyanoborates were synthesized from anhydrous lanthanide chlorides and the acid H[BH (CN) ] in either acetonitrile or pyridine. Reactions in acetonitrile lead to three-dimensional, anionic metal-organic frameworks (MOFs) [Ln {BH (CN) } ]⋅[Ln(CH CN) ] (Ln=Ce, Eu, Tb) which incorporate complex cations [Ln(CH CN) ] in the pores of the framework for charge compensation. In contrast, the reactions in pyridine result in the formation of one-dimensional coordination polymers [H(py) ][LnCl {BH (CN) } (py) ]⋅0.