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Dilatation thermique du cyclopentadienyl thallium TlC 5 H 5 entre 78 et 295 K
Author(s) -
Berar J. F.,
Calvarin G.,
Pommier C.,
Weigel D.
Publication year - 1975
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889875010746
Subject(s) - thallium , thermal expansion , anisotropy , cyclopentadienyl complex , analytical chemistry (journal) , chemistry , materials science , crystallography , ionic bonding , physics , ion , optics , inorganic chemistry , chromatography , composite material , organic chemistry , catalysis , biochemistry
The thermal expansion of cyclopentadienylthallium, TlC 5 H 5 , was determined in the range 78 to 295 K, using X‐ray powder diffractometry. Expansion is very anisotropic: α 1 = 125 ± 12, α 2 = 97 ± 5, α 3 = 0 ± 4 (all 10 −6 K −1 ). Directions and ratio of the two greatest expansion coefficients: α 1 and α 2 , are explained by considering the shortest distances Tl + –Tl| + in this ionic structure.