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- W2015076146 abstract "Abstract The M(0),, M(1) and 2(M (2) ) 1 2 spectral moments of the v(NH) bands of aniline derivatives as well as their complexes with various proton acceptors in solution were determined in the temperature range 285–330K. Studied compounds were: aniline; 4-metoxytetrafluoraniline; 2,3,5,6-tetrafluoraniline and 4-aminotetrafluorpyridine. The coefficients of linear Y=aT+b regression of the spectral moments M(0),, M(1) and 2( M (2) ) 1 2 with temperature were determined for the free amino groups as well as for 1:1 complexes with various proton acceptors in CCl4 solutions. An analysis of the influence of temperature on the spectral characteristics of monomers and their 1:1 complexes with various proton acceptors was performed. The heat formation (ΔH1) of the 1:1 complexes with proton acceptors was determined using the dependence of the equilibrium constants on temperature. On the basis of the “rule of intensity”: -Δ H = αΔ B 1 2 , the ΔH2 for the complexes of 1:2 stoichiometry was calculated, allowing the estimation of the relation ΔH1/ΔH2 It was shown that ΔH1 is larger than ΔH2 recalculated for a single bond. Comparison of the dynamics characteristics of the N-H bonds in amino groups in complexes of different stoichiometry proves that the hydrogen bonds in 1:1 complexes is stronger than in the complexes of 1:2 stoichoimetry." @default.
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- W2015076146 date "2000-11-01" @default.
- W2015076146 modified "2023-09-27" @default.
- W2015076146 title "Thermodynamics of the formation of complexes between aniline derivatives and proton acceptors in solution" @default.
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- W2015076146 doi "https://doi.org/10.1016/s0167-7322(00)00144-6" @default.
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