title: Built to order: molecular tinkertoys from the [Re(6)(mu(3)-Se)(8)](2+) clusters.
abstract: Ligand substitution of [Re(6)(mu(3)-Se)(8)(PEt(3))(5)(CH(3)CN)](SbF(6))(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 [Re(6)(mu(3)-Se)(8)](2+) core-containing clusters are interconnected by the corresponding bridging ligands. These novel supramolecular assemblies were characterized by a combination of NMR ((1)H and (31)P) spectroscopy, ESI-MS, and microanalysis. The molecular and solid-state structures of T1 have also been established by single-crystal X-ray diffraction.
authors.affiliation: Department of Chemistry, University of Arizona, Tucson, AZ 85721, USA.
authors.forename: Bryan K
authors.initials: BK
authors.lastname: Roland
authors.forename: Hugh D
authors.initials: HD
authors.lastname: Selby
authors.forename: Michael D
authors.initials: MD
authors.lastname: Carducci
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Zheng