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High Resolution Infrared Spectroscopy and Structure of CO–N2O

✍ Scribed by Hai-Bo Qian; Brian J. Howard

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
195 KB
Volume
184
Category
Article
ISSN
0022-2852

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✦ Synopsis

The infrared spectrum of the van der Waals complex CO-N 2 O has been recorded in the region of the n 3 N 2 O monomer vibrational band using a diode laser absorption spectrometer which incorporates a multipass cell and a pulsed jet. The spectrum has been completely analyzed using a normal asymmetric rotor Hamiltonian and the effective molecular constants are accurately determined for both ground and excited vibrational states. The band origin of CO-N 2 O is observed to shift toward higher wavenumber from the N 2 O monomer by 2.90540 cm 01 . With the aid of an intermolecular potential calculation, we are able to determine that the complex has a T-shaped configuration with the CO forming the leg of the T and the C atom of the CO molecule pointing to N 2 O. The structural parameters are RЉ cm Å 3.8707(3) A ˚, u N 2 O Å 80Њ { 5Њ, and u CO Å 20Њ { 5Њ.

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