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Molecular orbitals framework, boranes

The reaction between a trinuclear metal carbonyl cluster and trimetbyl amine borane has been investigated (41) and here the cluster anion functions as a Lewis base toward the boron atom, forming a B—O covalent bond (see Carbonyls). Molecular orbital calculations, supported by stmctural characterization, show that coordination of the amine borane causes small changes in the trinuclear framework. [Pg.262]

Molecular orbital calculations have shown that closo boranes have 2n + 1 bonding molecular orbitals, including n B—Hct bonding orbitals and n + 1 bonding orbitals in the central core (described as framework or skeletal bonding orbitals). A useful example is which has Of, symmetry. In this ion, each boron has four va-... [Pg.572]

Molecular orbital calculations have shown that closo boranes have two types of molecular orbitals that are instrumental in holding the boron framework... [Pg.651]

Many rings and clusters, however, cannot be understood within the two-center two-electron bond framework. This is sometimes extended by assuming resonance, for example between the two Kekule-type structures for benzene (6). A more natural approach is to extend the molecular orbital (MO) approach (see Topic C6) to many atoms. The so-called Hiickel theory of ring systems makes important predictions relevant to inorganic molecules such as S2N2. Clusters such as boranes also... [Pg.105]


See other pages where Molecular orbitals framework, boranes is mentioned: [Pg.234]    [Pg.316]    [Pg.412]    [Pg.178]    [Pg.412]    [Pg.344]    [Pg.401]    [Pg.800]    [Pg.596]    [Pg.25]    [Pg.51]    [Pg.9]    [Pg.73]    [Pg.58]    [Pg.131]   
See also in sourсe #XX -- [ Pg.572 ]




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