UEBER BISMUT-HALTIGE HETEROCYCLEN I. METHYLIERTE UND PHENYLIERTE BISMOCANE, INTRA- UND INTERMOLEKULARE KOORDINATIONSERHOEHUNG AN BISMUT(III)

Article abstract of DOI:10.1016/0022-328X(85)87427-1

Methyl and phenyl oxadithia and trithiabismocanes have been synthesized from methyl or phenyl diethoxybismutane and the respective dithiol.The light-sensitive compounds have been investigated by mass, vibrational and 13C NMR spectra: ν(Bi-Me) 470-460, ν(BiS2) 300-240 cm^-1; δ(13Me) -12ppm.The crystal structure of 5-phenyl-1,4,6,5-oxadithiabismocane has been determined (R = 0.056).The eight-membered ring has the chair-chair conformation.Besides three direct bonds (Bi-Ph 225(2), Bi-S 256.0(2) and 260.2(3) pm) there are one transannular (Bi...O 297(1) and two intermolecular contacts (Bi...S 344.0(3) and 350.9(3) pm) to bismuth in resulting a φ-monocapped octahedral sphere of coordination.These polyhedra are connected in sharing two different edges, and the crystal structure exhibits double chains of molecules.