Synthesis and crystal structure of azafulgides

Two azafulgides were synthesized and their crystal structures determined by a single crystal X-ray diffraction analysis. The substances crystallized in the following symmetries and cell parameters. C₂₃H₁₉NO₃( 2 ): triclinic space group P&1bar; with a = 7.243(2). b = 10.981(6) and c = 12.672(8)Å, α = 80.40(5)°, β = 75.58(4)° and γ = 77.32(3)° Z = 2; C₁₉H₁₉NO₃( 1 ): orthogonal space group C_2v⁹-Pmc2₁ with a = 8.079(8), b = 12.752(9) and c = 15.752(13)Å, Z=4. The calculated densities are 1.26 and 1.27 g/cm³ respectively for 2 and 1 . The crystal structures were determined by direct methods. The least-squares refinement led to R values of 0.044 and 0.058 for 2 and 1 for 2738 and 952 reflections with I > 3σ-(I) respectively.