First X-ray Crystallographic Structure Determination of 2,2'-Biphenylylene-2-biphenylylphenoxytellurane ([10-Te-4(C3O)]) Formed during the Ring Opening Reaction of Bis(2,2'-biphenylylene)tellurane ([10-Te-4(C4)]) with Phenols

Abstract

First X-ray Crystallographic Structure Determination of 2,2/-Biphenylylene-2-biphenylylphenoxytellurane ([10-Te-4(C3O)]> Formed during the Ring Opening Reaction of Bis(2,2'-biphenylylene)tellurane ([10-Te-4(C4)]) with Phenols

Tellurium⋯π-aryl interactions: a new bonding motif for supramolecular self-assembly and crystal engineering

“…Closely related with the previous structure are those of centrosymmetric dimers (2,2'-biphenylylene)(2-biphenylyl)phenoxytellurium 61 [HETGES] (Fig. 17) and (2,2'-biphenylylene)-(2-biphenylyl)benzoyloxytellurium 62 [NOSTOE] (Fig.…”

CHAPTER 4. A New Non-Covalent Bonding Mode in Supramolecular Chemistry: Main Group Element Lone-Pair–π(arene) Interactions

“…The electron-rich π-system thereby interacts with the electropositive region at the tip of the lone-pair. 81,82 However, as noted in the Introduction, dispersion-corrected DFT calculations reveal that these interactions may be sometimes described as donor(π)−acceptor(As) interactions, 25 consistent with aforementioned "additional" contacts mentioned for (11) 51 , (12) 52 and (38) 78 . The latter observations indicate more theoretical work is required to fully appreciate the nature of these interactions.…”

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

“…The structure of 40 [55], Figure 12.6a, along with that of 43 [58], features interactions occurring between the tellurium(IV) centre in the cation with two aryl rings of the counteranion. These represents further examples of thus-far unaccounted interactions as described above for 5 [22] and 20 [38]. The supramolecular structure of 41 [56] represents the sole example of a zig-zag chain, Figure 12.6b, all other examples being zerodimensional aggregates.…”

“…After manual sorting, a total of eight tellurium(IV) structures were found to exhibit Te(lone pair)···π (aryl) interactions; data are summarised in Table 12.1 and chemical diagrams of the interacting species are shown in Scheme 12.2 [18][19][20][21][22][23][24][25]. Two supramolecular aggregation patterns are noted in this series.…”

“…The zig-zag chain in 6 [23] is shown in Figure 12.1b being representative of the zig-zag chain in 7 and helical chain in 8. Worthy of particular mention is the linear supramolecular chain observed in 5 [22]; Figure 12.1c. Assuming the chemical composition is correct, [18]; (b) zig-zag supramolecular chain in 6 [23]; and (c) linear chain in 5 [22] where the nature of the individual Te···π (aryl) contacts is not fully understood, see text.…”