ISSN:
0377-0486
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
The Raman spectra of solutions of TeCI4 in HCI up to 12 mol I-1 show a changing pattern of bands consistent with a mixture of complexes, including [TeCI6]2- and [TeCI4(OH)]-. High-field 125Te NMR spectra at 126.24 MHz of these aqueous solutions consist of a single bind, showing that the TeIV species are in rapid equilibrium, which moves upfield within the range + 1550 to + 1400 ppm as the HCI concentration is increased. Solvent extraction with diethyl ether selects a single species from TeIV—HCI solutions. This is identified as the complex acid HTeCI4(OH) by a Raman spectrum marked by νs(Te—CI) = 289 cm-1 and ν(Te—O) = 667 cm-1, and a characteristic 125Te resonance, δ = 1448 ppm, w1/2 = 80 Hz.
Zusätzliches Material:
2 Tab.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/jrs.1250251010
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