Nitrogen molecule photoelectron spectrum

The photoelectron spectrum of nitrogen (N2) has several peaks, a pattern indicating that electrons can be found in several energy levels in the molecule. Each main group of lines corresponds to the energy of a molecular orbital. The additional "fine structure" on some of the groups of lines is due to the excitation of molecular vibration when an electron is expelled. 

Sulphur-Nitrogen Compounds.—Linear Compounds. Results from ab initio Hartree-Fock calculations on the ground states of NSF and SSO have been reported.87 The photoelectron spectra of the bent, triatomic molecules NSF, SSO, 03, S02, and NSC1 were compared and experimental details of the photoelectron spectrum of SSO presented. Pyrolysis of the tetrathiatriazyl halide S4N3X at low pressures gives the corresponding thiazyl halide XSN where X = C1 or Br but not where X = I 88... 

A photoelectron spectrum of the nitrogen molecule is shown in Fig. 10.2 and the electronic structure is shown in Fig. 10.3.1 H 1 The two 2 orbitals of the nitrogen atoms combine to form the two orbitals indicated as 1 (bonding orbital) and 2 (antibonding orbital). The six Ip orbitals combine to form six orbitals. Of these six, three (marked 3, 4, and 5) are bonding orbitals. The electrons ejected from orbital 1 do not appear in the spectrum of Fig. 10.2 because the light energy used is smaller than the ionization potential of these electrons. 

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