ISSN:
0044-2313
Keywords:
Trifluoromethyl tellurium compounds
;
crystal structure
;
NMR spectra
;
metathesis reactions
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Crystal Structure of CF3TeTeCF3. Synthesis, Characterization, and Properties of CF3TeITe2(CF3)2 crystallizes in the monoclinic space group P21/a with four formular units in the unit cell. The lattice constants are a = 10.13(1) Å, b = 11.489(7) Å, c = 6.822(8) Å and β = 101.20(8)°. CF3TeI is prepared by a quantitative reaction of Te2(CF3)2 with equimolar amounts of iodine. This compound is very instable, no isolation is possible. NMR spectra have been registrated. From metathesis reactions CF3TeX (X = C≡CC6H5, t-C4H9, SCN, SC6F5) are prepared.
Notes:
Te2(CF3)2 kristallisiert in der monoklinen Raumgruppe P21/a mit vier Formeleinheiten in der Elementarzelle. Die Gitterkonstanten betragen a = 10,13(1) Å, b = 11,489(7) Å, c = 6,822(8) Å und β = 101,20(8)°. Bei der Umsetzung von Te2(CF3)2 mit der äquimolaren Menge Iod entsteht CF3TeI in quantitativer Ausbeute, eine Isolierung gelingt nicht. Die NMR-Spektren zeigen eine starke Lösungsmittelabhängigkeit. Durch Metathesereaktionen werden die Verbindungen CF3TeX (X = C≡CC6H5, t-C4H9, SCN, SC6F5) synthetisiert.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19966220407
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