50645-41-5Relevant articles and documents
Absorption Spectra of Tellurium Clusters in Solid Argon
Hassanzadeh, Parviz,Thompson, Craig,Andrews, Lester
, p. 8246 - 8249 (2007/10/02)
Tellurium clusters (Te2, Te3, and two structural isomers of Te4) have been prepared by passing tellurium vapor through an argon microwave discharge and condensing the effluent onto a 12 +/- 2 K cold sapphire window.The Te2 diatomic and two isomers of Te4 have also been prepared by passing tellurium vapor through a superheater (800 deg C) followed by condensing with excess argon at 12 +/- 2 K.Absorption bands at 400 and 440 nm were identified as Te2; and the forbidden X2 3Σ-g ground state of Te2 was observed in the infrared spectrum at 1984.3 cm-1.A structured absorption band centered at 665 nm is assigned to Te3, which is in agreement with the resonance Raman excitation profile.Two absorption bands in the near-infrared region (an unstructured band at 760 nm and a structured band centered at 960 nm) were interconverted upon selective photolysis with band-pass filters.These two bands are assigned to structural isomers of Te4 similar to those observed for S4 and Se4.New infrared bands at 243, 232, 224 cm-1 are assigned to the 760-, 665-, and 960-nm absorbing species, respectively, on the basis of their similar photolysis and annealing behaviors.
