Describir: Enol and enethiol occurrence for some ketones and thioketones : Mass spectrometry and theoretical calculations

 __   __     ___      ______   __   __    ______   _    _             
 \ \\/ //   / _ \\   /_____//  \ \\/ //  /_   _// | || | ||     ___   
  \   //   | / \ ||  `____ `    \ ` //   `-| |,-  | || | ||    /   || 
  / . \\   | \_/ ||  /___//      | ||      | ||   | \\_/ ||   | [] || 
 /_//\_\\   \___//   `__ `       |_||      |_||    \____//     \__ || 
 `-`  --`   `---`    /_//        `-`'      `-`'     `---`       -|_|| 
                     `-`                                         `-`  
   ___    
  / _ \\  
 | / \ || 
 | \_/ || 
  \___//  
  `---`