A G2(MP2) theoretical study of substituent effects on H3BNHnCl3−n (n= 3-0) donor-acceptor complexes

Autor: Abdeladim Guermoune, Hafid Anane, Soufiane El Houssame, Ignacio Nebot-Gil, Francisco Tomás, Abdelali El Guerraze, Abedellah Jarid, Abderrahim Boutalib
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: Open Chemistry, Vol 6, Iss 3, Pp 400-403 (2008)
ISSN: 2391-5420
Popis: The complexation energies of H3BNHnCl3−n (n= 3-0) complexes and the proton affinities of NHnCl3−n compounds have been computed at the G2(MP2) level of theory. G2(MP2) results show that the successive chlorine substitution on the ammonia decreases both the basicity of the NHnCl3−n ligands and the stability of H3BNHnCl3−n complexes. The findings are interpreted in terms of the rehybridisation of the nitrogen lone-pair orbital. The NBO partitioning scheme shows that the variation of the N-H and N-Cl bond lengths, upon complexation, is due to variation of “s” character in these bonds.
Databáze: OpenAIRE