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

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Text this: A quantitative study of the halogenophilic nucleophilic substitution (SN2X) reaction and chalcogenophilic nucleophilic substitution (SN2Ch) reaction