Built to Order: Molecular Tinkertoys from the [Re6(μ3-Se)8]2+ Clusters
datasetposted on 12.03.2002, 00:00 by Bryan K. Roland, Hugh D. Selby, Michael D. Carducci, Zhiping Zheng
Ligand substitution of [Re6(μ3-Se)8(PEt3)5(CH3CN)](SbF6)2 (1) with pyridyl-based ligands, 2,4,6-tri-4-pyridyl-1,3,5-triazine (L1) and 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine (L2), produced respectively the star-shaped tricluster (T1) and tetracluster (T2) arrays, wherein three (T1) and four (T2) units of the [Re6(μ3-Se)8]2+ core-containing clusters are interconnected by the corresponding bridging ligands. These novel supramolecular assemblies were characterized by a combination of NMR (1H and 31P) spectroscopy, ESI-MS, and microanalysis. The molecular and solid-state structures of T1 have also been established by single-crystal X-ray diffraction.