I'm sure Hitler tried to convince Japan to attack Russia when Germany did, but obviously Japan wanted no part of that.
Look up the Battle of Khalkhin Gol!
https://en.wikipedia.org/wiki/Battles_of_Khalkhin_Gol
and you will see why Japan chose to ignore Hitler.
When Barbarossa began, Stalin was reportedly unable to function (this is in the newest bios of S), unwilling to accept that Hitler had broken his word. The fact is, Molotov had been sent immediately to the east and met with Japanese officials; he sent word back to Stalin that he believed the czarist-era treaties would hold, and Stalin ordered every military asset pulled out of the east and thrown against the Germans. The trains loaded up in Siberia, unloaded west of the Urals, and rolled back empty to bring more. Meanwhile whole conscripted "patriotic armies" were sent with weapons but minimal training in unexperienced officers against the German advance.