Attachment of Chelating Ligand Pockets to Tinorganyl Moieties

摘要

Several approaches have been undertaken to realize the synthesis of a new tinorganyl compound with a 2,2′,6′,2′′-terpyridine moiety. A synthesis pathway consisting of five steps with an overall yield of 51% was successful in producing Ph_3Sn(CH_2)_3OPhttpy [HOttpy = 2,6-bis(2′-pyridyl)-4′-(phydroxyphenyl) pyridine], and insight has been gained into (partial) halogenation reactions with this unprecedented tinorganyl compound. Halogenation with hydroiodic acid produced a new dinuclear complex cation that resulted from head-to-tail coordination of two monocations. Furthermore, synthesis and yields of already known intermediates have been optimized. The products were analyzed and identified by ~(119)Sn NMR, ~1H NMR, and ~(13)C NMR spectroscopy and ESI mass spectrometry, as well as by means of single-crystal Xray diffraction.