Molecular orbitals linear triatomic species

The molecular orbital picture of other linear triatomic species, such as N3, CS2, and OCN, can be determined similarly. Likewise, the molecular orbitals of longer... 

The molecular orbitals of related linear triatomic species—such as N3, CS2, and OCN —can be determined similarly. The molecular orbitals of longer polyatomic species can be determined by a similar method. Examples of bonding in linear and cyclic tt systems are considered in Chapter 13. 

Triatomic species can be linear, like CO2, or bent, like O3. The principles of orbital overlap do not depend on the identity of the atoms involved, so all second-row triatomic species with 16 valence electrons have the same bonding scheme as CO2 and are linear. For example, dinitrogen oxide (N2 O) has 16 valence electrons, so it has an orbital configuration identical to that of CO2. Each molecule is linear with an inner atom whose steric number is 2. As in CO2, the bonding framework of N2 O can be represented with sp hybrid orbitals. Both molecules have two perpendicular sets of three tt molecular orbitals. The resonance structures of N2 O, described... 

The linear molecule BeH, will serve as our first example of a triatomic species. The molecular orbitals for this molecule are constructed from the Is orbitals on the hydrogen atoms (labeled H and H ) and the 2j and one of the 2p orbitals of beryllium (the one directed along the H—Be—H bond axis). The remaining two Ip orbitals of beryllium cannot enter into the bonding because they are perpendicular to the molecular axis and thus have zero net overlap with the hydrogen orbitals. 

Molecular Orbifals The linear molecule BeH, will serve as our first example of a triatomic species. The in Trictomic molecular orbitals for this molecule are constructed from the Is orbitals on the... 

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