Intermolecular Se-(centre dot)-Se interactions observed in indium compounds containing dialkyl diselenophosphate ligands:syntheses,structure,and solution studies of[In{Se_2P(OR)_2}_3](R = Et,~iPr)

摘要

Weak intermolecular Se...Se interactions exist between adjacent molecules of[In{Se_2P(O~iPr)_2}_3]and form a loosely connected dimer.VT ~(31)P NMR studies suggest that In-Se bonds are labile in solution.Noncovalent chalcogen-chalcogen contacts with distances significantly shorter(0.1-0.4 A)than the sum of their van der Waals radii can lead to the formation of discrete supermolecules(e.g.dimers or tetramers),infinite supramolecular arrays,and tubular structures[1].Herein we report a loosely bound dimeric structure of[In{Se_2P(OR)_2}_3]which is formed via weak,intermolecular Se...Se interactions.