This invention is a dihydro-benzo[b][1,4]diazepin-2-one derivative of the formula
1
wherein R
1
, R
2
, R
3
, X and Y are as defined in the specification. The invention includes pharmaceutical compositions containing these compounds, a process for their preparation, their use in preparation of pharmaceutical compositions and administration of an effective amount of the compounds for the treatment or prevention of acute and/or chronic neurological disorders to a patient in need of such treatment.