摘要

The compound C(16)H(12)N(2) (2,5-diphenylpyrazine) was obtained as the by-product of synthesizing 5H-Imidazol[2,3-b]isoquinoline-1-ethanol-5-one,1,2,3,10b-tetrahydro-, beta(S)-phenyl-3(S)-phenyl-(compound 2), and its structure was determined by X-ray diffraction. The crystal is monoclinic, P2(1)/c, a = 13.466(5) , alpha = 90.00A(0), b = 5.758(2) , beta = 93.049(9)A(0), c = 7.713(3) , gamma = 90.00A(0), V = 597.2(4) (3), Z = 2, Dcalc. = 1.292 mg/m(3); the final R factor is R(1) = 0.0592, 771 for reflections with I (0) > 2 sigma(I (0)).