{"id":21080,"date":"2020-02-27T12:04:03","date_gmt":"2020-02-27T12:04:03","guid":{"rendered":"https:\/\/www.cpge-brizeux.fr\/wordpress\/?p=21080"},"modified":"2020-02-27T12:10:27","modified_gmt":"2020-02-27T12:10:27","slug":"or-5-spectroscopies","status":"publish","type":"post","link":"https:\/\/www.cpge-brizeux.fr\/wordpress\/pcsi\/chimie-pcsi-1920\/or-5-spectroscopies.html","title":{"rendered":"OR 5 : Spectroscopies"},"content":{"rendered":"
\n

OR 5 : Chapitre 15 : Spectroscopies
\n<\/span><\/strong><\/p>\n

Partie A : Spectroscopie infrarouge<\/strong><\/p>\n

I. R\u00e9alisation exp\u00e9rimentale
\n<\/strong><\/p>\n

II. Vibrations des liaisons des mol\u00e9cules<\/strong><\/p>\n

    \n
  1. Mod\u00e8le classique simpliste<\/li>\n
  2. Influence de la multiplicit\u00e9 de la liaison<\/li>\n
  3. Influence des liaisons hydrog\u00e8ne<\/li>\n
  4. Influence de la conjugaison<\/li>\n<\/ol>\n

    III. Interpr\u00e9tation d’un spectre IR<\/strong><\/p>\n

      \n
    1. Bandes d’absorption caract\u00e9ristiques<\/li>\n
    2. Utilisation de l’IR<\/li>\n<\/ol>\n

      Partie B : Spectroscopie R\u00e9sonance Magn\u00e9tique Nucl\u00e9aire (RMN)<\/strong><\/p>\n

      I. Principe de la RMN<\/strong><\/p>\n

        \n
      1. Notion de spin nucl\u00e9aire<\/li>\n
      2. Interaction d’un champ magn\u00e9tique ext\u00e9rieur avec le spin nucl\u00e9aire : principe de la RMN<\/li>\n
      3. Blindage des protons<\/li>\n
      4. R\u00e9alisation exp\u00e9rimentale\n
          \n
        1. Le spectrom\u00e8tre RMN<\/li>\n
        2. L’\u00e9chantillon<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

          II. Interpr\u00e9tation de spectres RMN<\/strong><\/p>\n

            \n
          1. Position des pics : le d\u00e9placement chimique\n
              \n
            1. D\u00e9finition<\/li>\n
            2. Effets de substituants<\/li>\n
            3. Protons \u00e9quivalents<\/li>\n<\/ol>\n<\/li>\n
            4. Intensit\u00e9 des pics<\/li>\n
            5. Forme des pics : ph\u00e9nom\u00e8ne de couplage\n
                \n
              1. Notion de couplage spin-spin et multiplicit\u00e9<\/li>\n
              2. R\u00e8gles sur le couplage spin-spin<\/li>\n
              3. Mesure d’un couplage spin-spin<\/li>\n
              4. Cas g\u00e9n\u00e9ral : couplage avec diff\u00e9rents groupes de protons \u00e9quivalents<\/li>\n<\/ol>\n<\/li>\n
              5. Utilisation de la RMN<\/li>\n<\/ol>\n

                Partie C : Application \u00e0 la d\u00e9termination de structure
                \n<\/strong><\/p>\n

                I. Exploitation de la formule brute<\/strong><\/p>\n

                  \n
                1. Nombre d’insaturations<\/li>\n
                2. Calcul du nombre d’insaturations<\/li>\n
                3. Analyse de la valeur du nombre d’insaturations<\/li>\n
                4. Exploitation de la formule brute<\/li>\n<\/ol>\n

                  II. Exploitation du spectre IR<\/strong><\/p>\n

                  III. Exploitation du spectre RMN<\/strong><\/p>\n

                  IV. Proposition d’une formule d\u00e9velopp\u00e9e<\/strong><\/p>\n

                  V. V\u00e9rification<\/strong><\/p>\n

                  VI. Exemple corrig\u00e9<\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                  OR 5 : Chapitre 15 : Spectroscopies Partie A : Spectroscopie infrarouge I. R\u00e9alisation exp\u00e9rimentale II. Vibrations des liaisons des mol\u00e9cules Mod\u00e8le classique simpliste Influence de la multiplicit\u00e9 de la liaison Influence des liaisons hydrog\u00e8ne Influence de la conjugaison III.…<\/p>\n

                  Read more →<\/a><\/p>\n","protected":false},"author":23,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[275],"tags":[63],"class_list":["post-21080","post","type-post","status-publish","format-standard","hentry","category-chimie-pcsi-1920","tag-chimie-organique"],"_links":{"self":[{"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/posts\/21080","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/comments?post=21080"}],"version-history":[{"count":1,"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/posts\/21080\/revisions"}],"predecessor-version":[{"id":21081,"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/posts\/21080\/revisions\/21081"}],"wp:attachment":[{"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/media?parent=21080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/categories?post=21080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cpge-brizeux.fr\/wordpress\/wp-json\/wp\/v2\/tags?post=21080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}