If I understand your question correctly, you want to know if a sentence with no auxiliary verb may be negated by placing not after the lexical verb, so that not falls at the end of the sentence, thus:
STATEMENT She loves me.
DIRECT NEGATION She loves me not.
This negative construction—I call it 'direct' negation because not directly negates the lexical verb—was common from the time that not arose in Middle English as a supplement (and then a replacement) for the older ne. Direct negation remained common and standard through Early Modern English (down to about 1660); but in the 15th century it began to be supplemented (and then replaced) by 'indirect' negation with do support, in which only auxiliary verbs may be directly negated, so negating a bare lexical verb requires that it be be recast as the infinitive complement of the 'dummy' auxiliary DO :
INDIRECT NEGATION She does not love me.
By the middle of the 18th century the indirect construction with do support had largely supplanted the direct construction, except in literary or very formal discourse. Direct negation lingered here and there (primarily in poetry) until the 20th century, but it is no longer employed even in the most formal registers except for occasional rhetorical or archaicizing effect.