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Compounds 1(C_(17)H_(22)N_2,M_r = 254.37) and 2(C_(13)H_(16)N_2,M_r = 200.28) have been synthesized and their crystal structures were determined by single-crystal X-ray diffraction. Crystal 1 belongs to triclinic,space group P1 with a = 6.524(2),b = 8.987(3),c = 12.746(5) ?,α = 95.220(7),β = 90.055(6),γ = 104.431(6)°,V = 720.5(4) ?~3,Z = 2,D_c = 1.173 g/cm~3,μ(Mo Kα) = 0.069 mm~(-1),F(000) = 276,R = 0.0578 and wR = 0.1221 for 1487 observed reflections I > 2s(I). Crystal 2 is of tetragonal system,space group I4_1/a with a = 20.763(10),b = 20.763(10),c = 11.427(6) ?,V = 4926(4) ?~3,Z = 16,D_c = 1.080 g/cm~3,μ(Mo Kα) = 0.065 mm~(-1),F(000) = 1728,R = 0.0581 and wR = 0.1288 for 1408 observed reflections with I > 2σ(I). Although the two compounds are similar with the same pyrazole and benzene ring units,X-ray analysis reveals that their structures are completely different maybe caused by steric effects.
Compounds 1 (C_ (17) H_ (22) N_2, M_r = 254.37) and 2 (C_ (13) H_ (16) N_2, M_r = 200.28) have been synthesized and their crystal structures were determined by single-crystal X-ray (2), b = 8.987 (3), c = 12.746 (5)?, α = 95.220 (7), β = 90.055 (6), γ = 104.431 (6) °, V = 720.5 (4) ~3, Z = 2, D_c = 1.173 g / cm ~ 3 and Mo = 0.00069 = R = 0.0578 and wR = 0.1221 for 1487 observed reflections I> 2s (I). Crystal 2 is of tetragonal system, space group I4_1 / a with a = 20.763 (10), b = 20.763 (10), c = 11.427 ), V = 4926 (4) ~ 3, Z = 16, D_c = 1.080 g / cm ~ 3 and μ (Mo Kα) = 0.065 mm -1, F and wR = 0.1288 for 1408 observed reflections with I> 2σ (I). Although the two compounds are similar with the same pyrazole and benzene ring units, X-ray analysis reveals that their structures are completely different may caused by steric effects.