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Vibrational Analysis of SnCl4N and SnBr4N

Abstract The kinetic constants method is applied to evaluate a fresh set of force constants in case of SnCl4N and SnBr4N, using recent vibrational frequencies. Certain simplifying considerations involving molecular dynamics are made use of in solving the secular equation. The calculated kinetic and force constants are utilised to evaluate other molecular constants, namely mean amplitudes of vibration, Coriolis coupling constants and centrifugal distortion constants. The calculated mean amplitudes of vibration of the Sn-Br bond (SnBr4N) are within the range of the available experimental values (SnBr4)