FT-IR intensities, bond moments, and its derivatives for nitromethane

Considering the -CH3 group as a single particle of 15.0 daltons, the infrar ed absorption intensities of the al fundamentals vibrational bands of CH3NO 2 in CCl4 have been measured at different concentrations considering two ca ses: band intensities with solvent substraction (wss) and without solvent s ubstraction (wtss). In order to obtain the matrix of the normalized amplitu des, X, the vibrational problem was solved via compliance constant: KCX = X Phi, in this case the use of the minus sign of the +/-(partial derivative mu/partial derivative Q(1))'s expressions is justified. The experimental re sults of the intensities measurements, were refined with a variance analysi s. From the intensities experimental data, our results are partial derivati ve mu(NO)/partial derivative(rNO) = 6.02 and 6.16 D/Angstrom, mu(NO) = 1.77 and 1.82D, mu(NO2) = 1.29 and 1.34D and partial derivative mu(NC)/partial derivative(RNC) = -2.62 and -2.68 D/Angstrom for measurements without solve nt substraction and with solvent substraction, respectively.