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

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Text this: DFT calculations of vibrational frequencies of carbon-nitrogen clusters: Raman spectra of carbon nitrides