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   _____     ___      _____     _____     _  __  
  / ___//   / _ \\   / ____||  |  ___||  | |/ // 
  \___ \\  | / \ || / //---`'  | ||__    | ' //  
  /    //  | \_/ || \ \\___    | ||__    | . \\  
 /____//    \___//   \_____||  |_____||  |_|\_\\ 
`-----`     `---`     `----`   `-----`   `-` --`

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Text this: A theoretical study of the properties and reactivities of ketene, thioketene, and selenoketene