IRC_DIRECTION

IRC_DIRECTION = -1 | 1
Default: IRC_DIRECTION = 1 

Description: IRC_DIRECTION defines direction of the initial displacement (-1|1 – negative|positive) used in IRC calculations. The value of [math]\displaystyle{ \lambda }[/math] must be from the inverval [math]\displaystyle{ \langle 0, 1 \rangle }[/math].