Synthese und Kristallstruktur des Amidinatokomplexes Ph-C(NSiMe3)2TeCl3 / Synthesis and Crystal Structure of the Amidinato Complex Ph —C(NSiMe3)2TeCl3
Open Access
- 1 February 1989
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 44 (2) , 205-207
- https://doi.org/10.1515/znb-1989-0217
Abstract
The title com pound has been prepared by the reaction o f N ,N ,N '-tris(trimethylsilyl)-benzamidine with tellurium tetrachloride in CH2Cl2 solution. The complex was characterized by an X-ray structure determination. Crystal data: space group P 1̄ , Z = 2, (2428 observed independent reflexions, R = 0.031). Lattice dimensions (19 °C): a = 946.7(1), b = 1031.5(1), c = 1337.1(1) pm; α = 67.411(8)°, β = 68.508(9)°, γ = 67.195(8)°. Ph-C(NSiMe3)2TeCl3 forms monomeric molecules, in which the tellurium atom is ϕ-octahedrally surrounded by three chlorine atoms and by the two nitrogen atoms of the amidinato chelate (bond lengths Te -N = 209.6 and 219.2 pm). The lone pair at the tellurium (IV) center and the small bite angle of the ligand cause a strong distortion of the octahedral geometry.Keywords
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