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Inter-Alkali-Metal Dative Bond in the MMN3 - (M=Alkali Metal) Cluster
1Advanced Computational Chemistry Centre, Cotton University, Panbazar, Guwahati, Assam, 781001, India.
Abstract:
Alkali metals are generally Lewis acids. On the contrary, Lewis basic character of alkali metals forming donor - acceptor complexes is a very rare phenomenon. In this contribution, I have theoretically designed an anionic cluster MMN3 - (M=alkali metals) on the basis of experimentally known reagent, alkali salt of azide ion MN3 , which shows unprecedented M:- →M donor-acceptor interaction. To the best of author's knowledge, the characterization of such donor-acceptor interaction among alkali metals is unprecedented. Formation of the 2c-2e donor-acceptor bonds have been confirmed by quantum theory of atoms in molecules and electron localization function analyses. The calculated bond dissociation energies are significant suggesting their possible spectroscopic identification.
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