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Construct an MO diagram for the BF molecule

Chemistry

Construct an MO diagram for the BF molecule. Keep in mind that due to the electronegativity of F, the fluorine 2s electrons are too low in energy to interact with the boron valence orbitals. What is the bond order in BF based on your diagram? (b) The Fe-based orbitals that correspond to the energy levels depicted in Fig. 4 for [Fe(CO);]-look as follows: 14a1 11e 13a1 10e Construct an MO diagram for (FB)Fe(CO)3 by bringing together the frontier orbitals of BF with those of an Fe(CO); fragment. What is the bond order in (FB)Fe(CO); based on your diagram? (c) The authors describe the bonding between B and Fe in [BFe(CO);]as: "The major interactions between B and Fe(CO)3- involve one Op-type (14a1) Fe-B electron-sharing bonding, two degenerate -type (10e) Fe-B dative bonding, and one Os-type (13a1) B-Fe dative bonding, leading to the aforementioned quadruple bonding." How would you describe the bonding interactions between B and Fe in (FB)Fe(CO)3 based on your diagram from part (b)? (d) The authors state that based on their theoretical calculations, "the B-Fe bond length (1.61 A) and relaxed force constant (not scaled, 481 N m" ) of [BFe(CO)3]- are shorter and larger than those of (FB)Fe(CO)3 (1.81 A, 220 N m" )." Does this qualitatively agree with your model for (FB)Fe(CO)3?

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