Fig. 6.

ORTEP drawing of compound b·HCl with 30% probability ellipsoids. Hydrogen bonded to carbon atoms has been omitted for clarity. Representative bond lengths (Å) and angles (deg): N(1)-O(1) 1.400(3); N(1)-C(6) 1.271(4); O(1)-N(1)-C(6) 112.9(2); C(10)-N(2)-C(4) 114.9(2).