Barnidipine hydrochloride polymorph and processes for their preparation

A crystalline form, named Form II, barnidipine hydrochloride (S, S) of formula (I) ** ** Formula characterized by orthorhombic elementary cell having the following dimensions: a> = 7.185 (2) A, b> = 16.123 (4) A, c> = 22,571 (6) A, V> = 2614.7 (12) A 3 determined by structural analysis by single crystal x-ray.