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The geometry around the Te IV atom in the title compound, C 12 H 15 Cl 3 O 2 Te or [TeCl 2 (C 5 H 8 ClO)(C 7 H 7 O)], is pseudo-trigonal bipyramidal, with the Cl atoms in the apical positions and the Te lone pair occupying the fifth position in the equatorial plane. By including the intermolecular secondary Te...Cl contact [3.485 (1) A] trans to the Te-C vinyl bond, the structure may be regarded as pseudo-octahedral. The molecules are associated via an O-H...Cl hydrogen bond to form centrosymmetric dimeric units, which in turn are arranged in an infinite zigzag chain along the b axis through the secondary Te...Cl bond. Distances and angles are: Te-Cl 2.4820(8) and 2.5600(8), Te-C 2.124(3) and 2.129 (3) A; Cl-Te-Cl 173.24(3), Cl-Te-C 92.42 (8), 92.86 (8), 87.06 (8) and 88.03 (8), and C-Te-C 98.02 (12)°.

The primary geometry about the Te IV atom in the title compound, C 12 H 13 Cl 3 OTe or [TeCl 2 (C 9 H 8 Cl)(C 3 H 5 O)], is a pseudo-trigonal-bipyramidal arrangement with the lone pair of electrons and the C atoms occupying the equatorial positions, and the Cl atoms occupying the axial positions. There are three secondary interactions, two intramolecular [Te…O 2.926(4) and Te…Cl 3.180(1) A] and one intermolecular [Te…Cl 3.659(1) A], which link the molecules. Significant distances and angles are: Te-Cl 2.4870(13) and 2.5096(12), Te-C 2.119(4) and 2.122(4) A, Cl-Te-Cl 171.78(5), Cl-Te-C 88.07(11), 87.68(15), 86.28(11) and 87.17(15), and C-Te-C 97.59(17)°.

In the title compound, [TeCl 2 (C 8 H 6 Cl)(C 7 H 7 O)], the Te IV atom is in a trigonal bipyramidal configuration with the lone pair of electrons occupying one of the equatorial positions. Distances and angles are: Te-Cl 2.521 (2) and 2.485 (2), Te-C 2.073 (7) and 2. 110 (7) A (aryl); Cl-Te-Cl 117.65 (8), Cl-Te-C 87.1 (2), 90.6 (2), 90.8 (2) and 90.6 (2), C-Te-C 95.0 (3)°

[TeCl 2 (C 9 H 8 Cl)(C 7 H 7 O)] cristallise dans Pbcn avec a=18,829, b=8,809, c=20,969 A, Z=8; affinement jusqu'a R=0,034. L'ion Te(IV) adopte une configuration bipyramide rhomboedrique avec une paire libre d'electrons en position equatoriale

The primary geometry about the Te(IV) atom in the title compound, [TeCl2(C8H6Cl)(C3H5O)] or C11H11Cl3OTe, is a pseudo-trigonal-bipyramidal arrangement, with two Cl atoms in apical positions, and the lone pair of electrons and C atoms in the equatorial plane. The Te(IV) atom is involved in three secondary interactions, two intramolecular [Te...O = 2.842 (3) A and Te.Cl3 = 3.209 (1) A] and one intermolecular [Te...Cl = 3.637 (1) A], the latter giving rise to a helical chain. These helices are linked by C-H...O interchain interactions.

[TeCl 2 (CHOC 6 H 4 )(C 8 H 11 O 2 )]•0,27CHCl 3 cristallise dans le systeme hexagonal, groupe d'espace P6 5 et sa structure est affinee jusqu'a R=0,0471. Coordination pseudo bipyramidale rhomboedrique autour de Te

[TeCl 2 (CH 3 OC 6 H 4 )(C 6 H 9 O)] cristallise dans P2 1 /n avec a=7,435, b=18,982 et c=21,252 A, β=90,66 o , Z=8; affinement jusqu'a R=0,068. Il y a deux molecules independantes essentiellement identiques dans la maille asymetrique. Arrangement bipyramide pseudo-rhomboedrique autour de Te. Contacts intramoleculaires Te…O courts de 2,93 A pour une molecule et de 2,94 A pour l'autre

C 15 H 14 OTe cristallise dans P1 avec affinement jusqu'a 0,054. Le groupement Te-C=C-phenyl est quasiment plan. Existence d'effets steriques dans la molecule avec Te-C=C=130,9(4)° et C=C-phenyl=130,4(5)°