div class=trans-pagebuttonPage 1button div class=trans-image a href=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5page1jpg target=_blank amp-img class=trans-thumb alt=Page 1: Ab Initio Study of the β-Lactam Ring in 2-Azetidinone and 3-Methyl-2-Azetidinone Characterization of the Ring Fundamental Vibrations src=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 2button div class=trans-image a href=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5page2jpg target=_blank amp-img class=trans-thumb alt=Page 2: Ab Initio Study of the β-Lactam Ring in 2-Azetidinone and 3-Methyl-2-Azetidinone Characterization of the Ring Fundamental Vibrations src=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 3button div class=trans-image a href=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5page3jpg target=_blank amp-img class=trans-thumb alt=Page 3: Ab Initio Study of the β-Lactam Ring in 2-Azetidinone and 3-Methyl-2-Azetidinone Characterization of the Ring Fundamental Vibrations src=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 4button div class=trans-image a href=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5page4jpg target=_blank amp-img class=trans-thumb alt=Page 4: Ab Initio Study of the β-Lactam Ring in 2-Azetidinone and 3-Methyl-2-Azetidinone Characterization of the Ring Fundamental Vibrations src=https:reader038fdokumencomreader038viewer20230405086332317e4e01430403008e4bhtml5thumbnails4jpg width=142 height=106 layout=responsive amp-imga divdivdiv...