For professors
Arrow-pushing homework that grades itself
Assign a mechanism, and each student draws the curly arrows step by step. Athanor pushes every arrow they draw, checks that it gives the structures they drew next, and says what went wrong in a wrong step. It is free for you and your students.
Graded by rules, not by opinion
The checker follows the electrons, so the same answer always gets the same mark, and you can read why. A proton transfer can be required or left out.
A version per student
SN1, SN2, E1, E2, additions to carbonyls and more, each with different substrates per student, so one answer does not fit another’s sheet.
Assign by link or through your LMS
Share a link with a due date and watch results arrive, export to Moodle XML or QTI 2.1, or, on arbastro Suite Ultra, launch from Canvas, Moodle, Blackboard or Brightspace with LTI 1.3.
Every mechanism we generate
SN1 and SN2, E1 and E2, carbocation shifts, proton transfers and additions to carbonyls. See the organic chemistry bank.