English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The ternary complexes of PhSiF3⋯4-iodopyridine⋯N-base (N-base = HCN, NH3, NHNH2, and NH2CH3), PhTF3⋯4-iodopyridine⋯NH3 (T = C and Ge), PhSiY3⋯4-iodopyridine⋯NH3 (Y = H and Cl), PhSiF3⋯4-bromopyridine⋯NH3 and the respective binary complexes have been investigated. 4-Halopyridine in these ternary complexes plays a dual role of both a Lewis acid with the σ-hole on the halogen atom in the halogen bond and a Lewis base with the nitrogen atom in the tetrel bond. The interplay between both interactions in the ternary complexes has been analyzed in terms of the binding distance, binding energy, charge transfer, electron density and electrostatic potentials. A synergistic effect is found for the tetrel and halogen bonds in most of the ternary complexes, while a diminutive effect is present for the hydrogen and halogen bonds in PhCF3⋯4-iodopyridine⋯NH3. The magnitude of cooperative energy depends on the strength of both interactions. Interestingly, PhSiCl3⋯4-iodopyridine has a stronger tetrel bond than PhSiH3⋯4-iodopyridine, inconsistent with the size of the σ-hole on the Si atom. In addition, the tetrel bond exhibits a partially covalent interaction nature.

Interplay between the σ-tetrel bond and σ-halogen bond in PhSiF3⋯4-iodopyridine⋯N-base

Interplay between the σ-tetrel bond and σ-halogen bond in PhSiF₃⋯4-iodopyridine⋯N-base