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FTIR spectra of neat acetone (ACT), neat acetonitrile (AN) and their binary solutions at various molar ratios 1:2, 1:3, 2:1 and 3:1 (AN:ACT) have been recorded in 4000-400 cm-1 region at room temperature. The acetone is a self-associated molecule and existed as a mixture of monomers, dimers and trimers. The acetonitrile is also a mixture of monomer and weakly bonded dimers. The acetone is associated through the H-bond interaction (ACT)C-H...O=C(ACT) and the acetone and acetonitrile molecules are interacted through the non-classical H-bonds (ACT) C-H···N≡C (AN) and (AN) C-H···O=C (ACT).

FTIR spectroscopic study is performed in 4000 – 400cm−1wavenumber rangeon pure Propanol(PRO), pure o-xylene (OXY), pure m-xylene(MXY), pure p-xylene(PXY) and their binary solutions (SS1 = 0.2 PRO + 0.8 OXY/MXY/PXY, SS2 =0.4+0.6 , SS3 = 0.6 + 0.4 and SS4 = 0.8 + 0.2)at various mole fractions. It was observed that neat propanol liquid appearsto be multimer especially as cyclic tetramer and involve in classical and non-classical hydrogen bond interactions with the three xylene isomers in all the binary solutions.

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