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. 2009 Mar 25;65(Pt 4):o812-3.
doi: 10.1107/S1600536809009404.

4-(Dimethyl-amino)phenyl ethynyl telluride

Joan Farran  1 , Angel Alvarez-Larena, Joan F Piniella, Mario V Capparelli
Affiliations

4-(Dimethyl-amino)phenyl ethynyl telluride

Joan Farran et al. Acta Crystallogr Sect E Struct Rep Online. .

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).

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Figures

Fig. 1.
Fig. 1.
Molecular structure of the title compound showing the atomic numbering. Displacement ellipsoids are drawn at 50% probability level.
Fig. 2.
Fig. 2.
View of the zigzag ribbon generated by the hydrogen bonds and the Te···π(aryl) interactions (shown as dashed lines).
See this image and copyright information in PMC

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