摘要:
The first spectroscopic study of the argon–diacetylene complex is reported here. The rotationally resolved near infrared spectrum has been analyzed in terms of a conventional asymmetric rotor Hamiltonian, yielding a set of ground and vibrationally excited state rotational constants consistent with a ‘‘T-shaped’’ geometry, similar to that of Ar–C2H2. Using distributed potential parameters determined previously for the Ar–C2H2 system we have developed an empirical potential for Ar–C4H2. A ground state calculation using this potential and the collocation method gives a vibrationally averaged structure in good agreement with experiment. A tentative assignment is also made for the band origins of the Ar2, Ar3–diacetylene complexes.