... Select a Journal or Book Volume: Page: ... Single-crystal X-ray measurements for crystals of C 19 H 18 N 2 O 2 ·H 2 O (2b) and C 20 H 20 N 2 O 3 ·CH 3 OH (7b) recrystallized from methanol and of C 19 H 18 N 2 O· 1 / 2 H 2 O (10b) recrystallized from toluene ...