Effective utilization of noncovalent interaction descriptor in BX3-Lewis base complexes: A determination of adduct/van der Waals complexes and reassessment of the BX3 acid strength order

摘要

An innovative method for classification between adducts and van der Waals Complexes has been proposed by investigating various boron halides BX3 (X = F, Cl, and Br)-Lewis bases donor-acceptor complexes via utilization of noncovalent interaction descriptor. Interestingly, their interacting nature has also provided a basis for explaining different acid strength order of BF3, BCl3 and BBr3, which brings a new possible order of Lewis acid strength (BCl3 >BBr3 >BF3) with respect to some bases. (C) 2015 Elsevier B.V. All rights reserved.