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4-(Dimethyl-amino)phenyl ethynyl telluride
Farran José, Joan (Universitat Autònoma de Barcelona. Unitat de Cristal·lografia)
Alvarez Larena, Ángel (Universitat Autònoma de Barcelona. Unitat de Cristal·lografia)
Piniella, J. Francesc (Joan Francesc) (Universitat Autònoma de Barcelona. Unitat de Cristal·lografia)
Capparelli, Mario V. (Universitat Autònoma de Barcelona. Unitat de Cristal·lografia)

Date: 2009
Abstract: The title compound, C(10)H(11)NTe, is the first organyl ethynyl telluride, R-Te-C C-H, to be structurally characterized. In the L-shaped mol-ecule, the aryl moiety, viz. Me(2)NC(6)H(4)Te, is almost perpendicular to the Te-C C-H fragment. The Te-Csp(2) bond [2. 115 (3) Å] is significantly longer than the Te-Csp bond [2. 041 (4) Å]. The Te-C C group is approximately linear [Te-C-C = 178. 5 (4)° and C C = 1. 161 (5) Å], while the coordination at the Te atom is angular [C-Te-C = 95. 92 (14)°]. In the crystal structure, there are Csp-H⋯N hydrogen bonds which are perpendicular to the CNMe(2) group; the N atom displays some degree of pyramidalization. Centrosymmetrically related pairs of mol-ecules are linked by Te⋯π(ar-yl) inter-actions, with Te⋯Cg = 3. 683 (4) Å and Csp-Te⋯Cg = 159. 1 (2)° (Cg is the centroid of the benzene ring). These inter-actions lead to the formation of zigzag ribbons which run along c and are approximately parallel to (110).
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Cristal·lografia ; Crystallography
Published in: Acta crystallographica.Section E, Structure reports online, Vol. 65, Issue 4 (April 2009) , p. 812-813, ISSN 1600-5368

DOI: 10.1107/S1600536809009404
PMID: 21582534

10 p, 451.4 KB

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 Record created 2013-06-03, last modified 2019-02-09

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