MICROWAVE DATA ANALYSIS OF THE 1000, 0010 INTERACTING STATES OF STANNANE 116SnH4

A. Tabyaoui1,3*, M. Takami2, H. Tijani3, G. Pierre4

1 FST Settat, km 3 B.P. 577, 26000 Settat, Morocco.

2 The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351-01, Japan.

3 L. E. T. S., Faculté des Sciences, avenue Ibn Batouta. B.P. 1014, Rabat, Morocco.

4 LPUB Faculté des Sciences Mirande. 9 Rue Alain Savary. B.P. 47870, F-21078 Dijon, France.

* Corresponding author. E-mail: atabyaoui@yahoo.fr

Received : 12 March 2002; revised version accepted : 30 May 2002

Abstract

Monoisotopic stannane 116SnH4 has been investigated at room temperature in the 1775-2025 cm-1 region using Raman and infrared spectroscopy.

Most observed transitions correspond to (n1/n3) lines. For this dyad we have used a Hamiltonian developed to the fifth order to analyse the two spectra, for J values up to 14. The simultaneous analysis of experimental data enabled us to determine 4 n1 parameters, 17 n3 parameters and 6 interaction parameters. We have determined and compared two sets of parameters: the first one using Raman, infrared and microwave data and the second using only the Raman and infrared data

The use of microwave data permits to obtain a more accurate set of parameters. This have its importance for the study of the interaction between the (1000,0010) dyad and the third overtone bending tetrad (0300,0201,0102,0003).

Keywords: Stannane; 116SnH4 ; Spherical top molecules; Molecular spectroscopy; (n1/n3) dyad; Microwave transitions.

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