Coordination Assembly of TTF Derivatives through CuI Bridges

The sulfur‐rich ligand C 12 H 12 O 4 S 6 ( 1 ) and complexes [(C 12 H 12 O 4 S 6 )CuI] 2 ( 2 ) and [(C 7 H 6 O 4 S 3 )CuI] ∞ ( 3 ) have been synthesized and characterized crystallographically. Molecules of compound 1, a tetrathiafulvalene (TTF) derivative, have a boat‐shaped configuration and are packed discretely within the crystal. Compound 1 coordinates to a rhomboid CuI center forming a dimeric TTF derivative 2 . In complex 2 the boat‐shaped configuration of 1 is flattened. Molecules of 2 are packed regularly and compactly in the crystal and are arranged side by side with short S ··· S contacts, which assemble the molecules into a 1D ribbon structure. This provides evidence that metal coordination or assembly is a useful stratagem for changing the molecular configuration and packing that further influence the intermolecular interactions. Complex 3 has a step‐like polymeric structure formed by copper‐iodine bridges and copper‐sulfur bridges (coordinated thiocarbonyl). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)