The reaction of bis(2,2′-biphenylylene)tellurane (1) (λ4-tellane) with ozone at low temperature affords diastereoselectively the O-bridged tellurane Te-oxide dimer (2) (λ6-tellane) having a bis(octahedral) configuration. The compound 2 has been characterized by elemental and spectroscopic (IR and FABMS, 1H, 13C, and 125Te NMR) analyses. The crystal and molecularstructure analysis of 2 identifies the
Bis(2,2'-biphenylylene)tellurane (1; lambda(4)-tellane) reacts with sulfuryl chloride and xenon difluoride to give bis(2,2'-biphenylylene)dichloro-and -difluoropertelluranes, [12-Te-6(C4X2), X = Cl (2a), F (2b)] (lambda(6)-tellane) in high yields. The structures of the pertelluranes 2a and 2b were determined by single crystal X-ray crystallographic analysis, revealing that they have a distorted octahedral geometry and a cis-configuration with respect to the coordinated halogen atoms, and subsequently each was analyzed by an ab initio calculation. (C) 1997 Elsevier Science Ltd.
Sato, Soichi; Ueminami, Takeshi; Yamashita, Takahiro, Phosphorus, Sulfur and Silicon and the Related Elements, 1998, vol. 136, p. 595 - 598