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Trimeric Anions in KTeO 2 F
Author(s) -
Keßler Ulrich,
Jansen Martin
Publication year - 2000
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200008)2000:8<1767::aid-ejic1767>3.0.co;2-s
Subject(s) - chemistry , tellurium , crystallography , lone pair , bipyramid , crystal structure , oxygen atom , solid state , oxidation state , trigonal bipyramidal molecular geometry , molecule , stereochemistry , inorganic chemistry , metal , organic chemistry
KTeO 2 F was prepared by solid state reaction from KF and TeO 2 at 350 °C. The structure has been determined by single crystal X‐ray analysis [ P 2 1 / n , Z = 12, a = 1177.8(2) pm, b = 1499.0(3) pm, c = 619.5(2) pm, β = 94.11(2) °, R 1 = 0.0266, wR 2 = 0.0604]. A characteristic feature of the structure is the presence of trimeric anions Te 3 O 6 F 3 3− in which the tellurium atoms are bridged by oxygen atoms. The lone pairs are stereoactive leading to pseudotrigonal bipyramidal coordination at the tellurium atoms. Additional weak bonding interactions link these trimeric anions resulting in a layered structure.