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C_(20)H_(20)N_(4)O_(2)C_(12)C_u의 결정 구조
김문접;홍현표 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.1
The structure of C_(20)H_(20)N_(4)O_(2)C_(12)C_u has been determined by X-ray diffraction methods. The crystal system is Monoclinic, space group Pa, unit cell constants, a=7.8644(9)Å, b = 18.1689 (4)Å, c = 9.0150 (5)Å, (β= 109.91(1)˚, V=1211.12 Å^3, T= 294.9K, Z= 2, D_2=1.322Mgm^(-3). The intensity data were collected on an Enraf-Nonius CAD-4 Diffractometer with graphite monochromated Cu Ka radiation (λ= 1.54184 Å). The molecular structure was solved by direct methods and refined by full-matxix least squares to a final R = 6.59% for 2498 unique observed F_0 > 4σ(F_0) reflections and 254 parameters.