Premium
Tellurium(IV) Fluorides and Azides containing the Nitrogen Donor Substituent R = 2‐Me 2 NCH 2 C 6 H 4 ; Crystal Structure of RTeF 3 and of an Unusual Tellurium(VI) Fluoride Salt
Author(s) -
Hammerl Anton,
Klapötke Thomas M.,
Krumm Burkhard,
Scherr Matthias
Publication year - 2007
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200700079
Subject(s) - tellurium , chemistry , substituent , disproportionation , iodide , medicinal chemistry , crystallography , inorganic chemistry , organic chemistry , catalysis
The tellurenyl fluoride, 2‐Me 2 NCH 2 C 6 H 4 TeF, was obtained from reaction of the tellurenyl iodide RTeI with AgF. The compound was unambiguously identified by 19 F and 125 Te NMR spectroscopy. The decomposition under disproportionation leads to the tellurium(IV) trifluoride, 2‐Me 2 NCH 2 C 6 H 4 TeF 3 and the ditelluride RTeTeR. The fluorination of the ditelluride, (2‐Me 2 NCH 2 C 6 H 4 Te) 2 , with XeF 2 results in pure RTeF 3 . The molecular structure of 2‐Me 2 NCH 2 C 6 H 4 TeF 3 , the second structural characterized tellurium(IV) trifluoride, has been determined. Furthermore the syntheses of the new tellurium(IV) difluoride, (2‐Me 2 NCH 2 C 6 H 4 ) 2 TeF 2 , and corresponding tellurium(IV) diazide, (2‐Me 2 NCH 2 C 6 H 4 ) 2 Te(N 3 ) 2 as well as the tellurium(IV) triazide, 2‐Me 2 NCH 2 C 6 H 4 Te(N 3 ) 3 , and their characterization by spectroscopic methods were reported. During these investigations a rather interesting tellurium(VI) species was formed and the molecular structure of a subsequent product, [(2‐Me 2 NHCH 2 C 6 H 4 ) 2 TeF 3 O] 2 (SiF 6 ), was elucidated. Theoretical investigations for the compounds containing the stabilizing 2‐dimethylaminomethylphenyl substituent are illustrated.