The effect of steric hindrance on the association of telluradiazoles through Te-N secondary bonding interactions

Anthony F. Cozzolino, James F. Britten, Ignacio Vargas-Baca

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

DFT calculations were used to compare the magnitude of steric repulsion to the strength of secondary bonding interactions (SBIs) in the (Te-N)2 supramolecular synthon to explain or predict the supramolecular structures assembled by two derivatives of the 1,2,5-telluradiazole ring: benzo-2,1,3-telluradiazole (4c) and 3,6-dibromobenzo-2,1,3-telluradiazole (5). The crystallographically determined structures were consistent with the computational predictions. In sharp contrast with the previously known structures of its sulfur and selenium analogues, 4c forms infinite ribbon chains in the solid state with 2.682(7)-2.720(7) Å Te-N SBIs. Steric hindrance in 5 restricted the supramolecular association to form discrete dimers with 2.697(8) Å Te-N SBIs. In addition to discrete dimers, the dibromo derivative crystallizes as solvated dimers in 5·DMSO with 2.834(5) Å Te-O SBIs. Other weaker SBIs were identified in the crystal lattices and were assessed by the computational method.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalCrystal Growth and Design
Volume6
Issue number1
DOIs
StatePublished - Jan 2006

Fingerprint Dive into the research topics of 'The effect of steric hindrance on the association of telluradiazoles through Te-N secondary bonding interactions'. Together they form a unique fingerprint.

Cite this