Bis(p-methoxyphenyl) Telluride

Bis(1-naphthyl) telluride

“…Bis(1-naphthyl)telluride, prepared earlier by the transfer of aryl ligands from (1-C 10 H 7 ) 2 Hg (Lyons et al, 1908) or (1-C 10 H 7 ) 3 Bi (Arnauld et al, 1999) to elemental tellurium has also been obtained by detelluration of (1-C 10 H 7 ) 2 Te 2 , analogous to that of dimesitylditelluride (Akiba et al, 1984). The angular geometry of (1-C 10 H 7 ) 2 Te is quite similar to bis-(p-substituted phenyl)tellurides (Farran et al, 1997;Engman et al, 2002) and the aromatic rings are oriented to give rise to nearly T-shaped conformation, presumably due to steric repulsion of 1-naphthyl units. However, the steric influence of the 1-naphthyl ligand on the molecular geometry of the title compound is neglibible when compared with the mesityl (Klapötke et al, 2005), nonafluoromesityl (Voelker et al, 1999) or supermesityl (Wieber et al, 1995) analogues.…”

“…The molecule of the title compound, (I) ( Fig.1), adopts angular geometry similar to other symmetrical diaryltellurides, (4-XC 6 H 5 ) 2 Te, X = OMe (Farran et al, 1997); X = OH, NH 2 , NMe 2 (Engman et al, 2002). Both Te-C aryl bonds are 2.119 2Å and inclined at 96.32 (9) 0 .…”

“…For related literature, see: Lyons et al (1908); Arnauld et al (1999); Akiba et al (1984); Farran et al (1997); Engman et al (2002); Klapö tke et al (2005); Voelker et al (1999); Wieber et al (1995); Allen et al (1987Allen et al ( , 2002; Schulz Lang et al (2002).…”

Supramolecular Aggregation Patterns and Stereochemical Consequences of Tellurium(Lone Pair)…π(Aryl) Interactions

“…With the exception of one structure, the remaining tellurium structures featuring Te(lone pair)···π (aryl) synthons, that is, 23-38 [38,[41][42][43][44][45][46][47][48][49][50][51][52][53] adopt one-dimensional aggregation patterns in their crystal structures, see Table 12.3 for data. There are basically two variations in that the majority, 11 examples, that is, 23-33, have the chains sustained by single Te(lone pair) ··π (aryl) interactions, whereas there are five examples whereby the chains are sustained by two Te(lone pair) .…”

“…Finally, four of the structures have linear topologies with a single example of a zig-zag topology, Table 12.3. There is a sole example of Te(lone pair)···π(aryl) interactions leading to a threedimensional architecture, that is, 39 [54], Scheme 12.6. Both tellurium atoms in this [42] 3.55 9.3 linear 25 [43] 3.62 6.9 helical 26 [44] 3.66 10.2 helical 27 [45] 3.71 13.1 helical 28 [46] 3.72 8.5 zig-zag 29 [47] 3.82 14.7 helical 30 [48] 3.86 12.2 helical 31 [49] 3.88 9.1 zig-zag 32 [48] 3.89 11.2 zig-zag 33 [38] 3 …”