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L’analyse spectrale

L’analyse spectrale. 4 4 4 4 4 12. δ (ppm). L’acide vanillique : C 8 H 8 O 4. T (%). σ = 1 / λ (cm -1 ). 100. A. λ (nm). 0. L’analyse spectrale : identification de molécule. Absorption et couleur complémentaire. benzène (incolore) λ max = 254 nm.

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L’analyse spectrale

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  1. L’analyse spectrale

  2. 4 4 4 4 4 12 δ (ppm) L’acide vanillique : C8H8O4 T (%) σ = 1 / λ (cm-1) 100 A λ (nm) 0 L’analyse spectrale : identification de molécule

  3. Absorption et couleur complémentaire benzène (incolore) λmax = 254 nm naphtacène (orange) λmax = 480 nm naphtalène (incolore) λmax = 314 nm anthracène (jaune) λmax = 380 nm pentacène (violet) λmax = 580 nm

  4. Solution de permanganate de potassium : KMnO4 Spectres d’absorption UV-visible

  5. Absorption et couleur complémentaire 510-560 nm 580-590 nm 435-480 nm 595-625 nm 380-420 nm 625-750 nm

  6. Modes de vibration d’une molécule molécule au repos mouvement d’élongation (stretch) mouvement de déformation (bend)

  7. Table simplifiée de spectroscopie IR

  8. butanone Pentan-2-ol Spectres IR

  9. Hexan-1-ol pur Hexan-1-ol solution diluée Hexan-1-ol solution très diluée Spectres IR : cas du groupe alcool

  10. Quelques déplacements chimiques en RMN du proton

  11. Bromoéthane BrCH2-CH3 Chloroforme CHCl3 h1 1-chloro-2,2-diméthylpropane h2 CHCl2-CH2Cl TMS 0 8 6 4 2 δ(ppm) Spectres RMN du proton

  12. C4H80 Spectres RMN du proton

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