Heteroligated Supramolecular Coordination Complexes Formed via the Halide-Induced Ligand Rearrangement Reaction

Thermally induced structural rearrangement of the Fe(II) coordination geometry in metallo-supramolecular polyelectrolytes.

Rigid rod-type metallo-supramolecular coordination polyelectrolytes with Fe(II) centres (Fe-MEPEs) are produced via the self-assembly of the ditopic ligand 1,4-bis(2,2':6',2''-terpyridine-4'-yl)benzene (tpy-ph-tpy) and Fe(II) acetate. Fe-MEPEs exhibit remarkable electrochromic properties; they change colour from blue to transparent when an electric potential is applied. This electrochemical pro...

Supramolecular Complexes and Supramolecular Catalysts Formed by Molecular Assembly of Multinuclear Metal Complexes in Aqueous Solutions

Metal-coordination-driven mixed ligand binding in supramolecular bisporphyrin tweezers.

Mg(II)bisporphyrin has been used as an efficient host for the selective binding of guest ligands. In the presence of heterogeneous guest pairs, 2-aminopyrimidine/pyrazine and 2-aminopyrimidine/1,4-dioxane, 2-aminopyrimidine is bound selectively inside the bisporphyrin cavity whereas pyrazine/1,4-dioxane is bound outside to produce 1D mixed ligand polymers. UV-vis, (1)H NMR spectra and X-ray str...

Solvent Induced Luminescence in Supramolecular Heterobimetallic Gold(I)- Copper(I) Complexes with a Bidentate Nitrile Ligand

Heterobimetallic complexes [Cu(N C-Cy-C N)2][Au(C6F5)2]·0.5 Toluene (1) and [Cu(N C-CyC N)2][Au(C6F5)2]·CH2Cl2 (2) and [AuCu(C6F5)2(N C-Cy-C N)2]·CH2Cl2 (3) (with the same stoichiometry but different structure) have been synthesized and the crystal structure of complex 2·CH2Cl2 has been characterized through X-ray diffraction studies. The structure shows a cationic [Cu(N C-Cy-C N)2] + polymer t...

Enhancing the magnetic anisotropy of cyano-ligated chromium(II) and chromium(III) complexes via heavy halide ligand effects.

A method of increasing the axial zero-field splitting parameter for transition metal complexes of utility in the assembly of magnetic clusters is demonstrated through the use of heavy atoms as auxiliary ligands. The octahedral complexes [Cr(dmpe)(2)(CN)X](+) (dmpe = 1,2-bis(dimethylphosphino)ethane, X = Cl, Br, I) and Cr(dmpe)(2)(CN)X (X = Cl, I) are synthesized and structurally characterized. ...