Aryl piperazinyl-(C.sub.2 or C.sub.4) alkylene heterocyclic compounds having neuroleptic activity

A compound of the formula ##STR4## or a pharmaceutically acceptable acid addition salt thereof, wherein Ar is benzoisothiazolyl or an oxide or dioxide thereof each optionally substituted by one fluoro, chloro, trifluoromethyl, methoxy, cyano, or nitro;

• n is 1 or 2;
• and
• X and Y together with the phenyl to which they are attached form benzothiazolyl;
• 2-aminobenzothiazolyl;
• benzoisothiazolyl;
• indazolyl;
• 2-hydroxyindazolyl;
• indolyl;
• oxindolyl optionally substituted by one to three of (C.sub.1 -C.sub.3)alkyl, or one of chloro, fluoro or phenyl, said phenyl optionally substituted by one chloro or fluoro;
• benzoxazolyl;
• 2-aminobenzoxazolyl;
• benzoxazolonyl;
• 2-aminobenzoxazolinyl;
• benzothiazolonyl;
• bezoimidazolonyl;
• or benzotriazolyl.