Unexpected trends in halogen-bond based noncovalent adducts

• DOI: 10.1039/c2cc33304j
• Publication Date: 2012-06-14T11:00:22Z
• Authors: Stefan M. Huber; Elisa Jimenez-Izal; Jesus M. Ugalde; Ivan Infante
• Keywords: Electronegativity; Halogen bond; Non-covalent interactions

Unexpected trends in the strengths of halogen-bond based adducts CY(3)I (Y = F, Cl, Br, I) with two typical Lewis bases (chloride and trimethylamine) show that donor strength (Lewis acidity) a compound R-X is not necessarily increased higher electronegativity (carbon-based) group R.