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김문집,전기배 순천향대학교 기초과학연구소 2007 순천향자연과학연구 논문집 Vol.13 No.2
The structure of C_(15)H_(9)O₂NCl₂ has been determined by X-ray diffraction methods. The crystal system is monoclinic, space group P2₁/α, unit cell constants, α = 14.603(l)Å, b = 6.162(1)Å, c = 15.685(1)Å, β = 112.233(6)˚, V = 1306.45(17)ų, T = 293(2)K, Z=4, D_(c)= 1.556Mgm^(-3). The intensity data were collected on an Enraf-Nonius CAD-4 Diffractometer with graphite monochromated Cц Kα radiation (λ = 1.54184Å). The molecular structure was solved by direct methods and refined by full-matrix least squares tu a final R = 7.26% fur 1405 unique observed F_(0)> 4σ(F_(0)) reflections and 181 parameters.
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.
Ethyl-4-methoxybenzylidenecyanoacetate의 空間群
김문집,서일환,맹주양,오인근 순천향대학교 1985 논문집 Vol.8 No.4
The synthesis of Ethyl-4-methoxybenzylidenecyanoacetate was confirmed by IR spectrophotometer, NMR and Mass spectrometer. The crystal is monoclinic with a=8.63(1), b=8.43(1), c=17.38(2), β=91.6(1)°, Z=4 and space group P2₁/n, so that four molecules in a unit cell are arranged to have 2₁ screw symmetry along b-axis and n glide plane perpendicular to it.
金彰鎭,金文執,梁俊默,徐日煥 충남대학교 1985 忠南科學硏究誌 Vol.12 No.1
The crystal structure of lithium fluoride, LiF, has been determined by X-ray (Cu K_α radiation) powder diffraction method. The crystal is face-centered cubic, space group F4/m3 ̄2/m, with unit cell dimensions a=4.0272(2)Å, V=65.31(1)Å^3, z=4 and D_c=2.64g/㎤. The structure was solved by graphical method using nine powder diffractometer intensity data for LiF and Nelson-Riley function was used for the cell dimension refinement. The experimental and theoretical integrated intensities of the reflecting planes are in good agreement with each other. The LiF crystal is aggregates of positive and negative ionic atoms with interatomic distance 2.0136(1)Å which shows the ionic bond between Li^+ and F^-. Each lattice point is occupied by a Li^+-F^- ion pair in the same orientation and the coordination number is six. Thus the LiF structure is exactly same as NaCl.
김문집:김영수 순천향대학교 기초과학연구소 2004 순천향자연과학연구 논문집 Vol.10 No.2
The structure of C_(22)H_(18)O_(4) has been determined by X-ray diffraction methods. The crystal system is monoclinic space group P2₁/n, until cell constants, a=16.1011(8)Å ,b=5.9721(5)Å, c=18.3200(9)Å, β=91.91(1)˚, V=1761.38, T=298K, Z=4, Dc=1.306Mgm^(-3). The intensity data were collected on an Enraf-Nonius CAD-4 Diffractometer with graphite monochromated Mo Ka radiation (λ=0.71073Å). The molecular structure was solved by direct methods and refined by full-matrix least squares to a final R=400% for 1940 unique observed F_(0)>4σ(F_(0)) reflections and 235 parameters.
김문집,전기배 순천향대학교 기초과학연구소 2007 순천향자연과학연구 논문집 Vol.13 No.2
The structure of C_(20)_H_(22)N₂O₂MnCl has been determined by X-ray diffractiun methods. The crystal system is monoclinic, space group P2₁/α, unit cell constants, α = 14.8967(27) Å, b= 18.6446 (36)Å, c = 6.8836(7)Å, β = 92.32(2)˚, V = 1910.30(15) ų, T=293(2)K, Z=4, D_(c) = 1.435Mgm^(-3). The intensity data were collected on an Enraf-Nonius CAD-4 Diffractometer with graphite monochromated Mo Kα radiation(λ = 0.71073 Å). The molecular structure was sulved by direct methods and refined by full-matrix least squares to a final R=6.73% for 1670 unique observed F_(0)>4σ(F_(0)) reflections and 239 parameters.
X-RAY DIFFRACTION METHOD에 의한 COPPER METAL의 구조 고찰
金文執,尹和重,徐日煥 충남대학교 자연과학연구소 1980 學術硏究誌 Vol.7 No.1
The eight X-ray diffraction intensity peaks for copper powder were collected rotating ^(2θ)hkl angle of X-ray diffractometer from 30 degrees to 150 degrees, in which copper target had been used. Each reflecting plane has been identified by means of the relationship between latticeparameter and interplanar spacings, and this result has shown that copper has a face-centered cubic structure and a_(Cu) = 3.6136±7.32 ×10^(-4)Å. The experimental and theoretical integrated intensities of the reflecting planes are in good agreement with each other,
Diethyl 1-chloro-2-phenyl-2-(tosyl) aminoethylphosphonate 의 결정 및 분자구조
김대영,이재혁,신준철,김문집 순천향대학교 기초과학연구소 1997 순천향자연과학연구 논문집 Vol.3 No.1
The crystal and molecular structure of diethyl 1-chloro-2-phenyl-2-(tosyl)aminoethyl phosphonate has been determined from single crystal X-ray diffraction study ; C19H25NO5PCIS, Monoclinic, P2₁/a, a=10.8507(11)Å, b=16.1201(12)Å, c=12.7354(12)Å, β=90.192(7)°, V=2227.6(3)ų, T=293(2)K, Z=4, Cuk α(λ=1.54178Å). The structure was solved by direct method and refined by full-matrix least squares to a final R=5.17% for 2444 unique observed F0> 4σ(F0) reflections and 254 parameters.
김문집,홍현표 순천향대학교 기초과학연구소 2011 순천향자연과학연구 논문집 Vol.17 No.2
The structure of C_(26)H_(38)N_(6)O₄Ni has been determined by X-ray diffraction method. The crystal is Triclinic, Space group PI^_, unit cell constants, a = 31.1204(14)Å, b = 10.9622(19)Å, c=18.1212(7)Å, α=90˚, β=98.57(94)˚, γ=90˚ V=6113.05(63)ų, T=296.62K, Z=8, D_(c)=1.3608Mgm^(-3). The intensity data were collected on an Enraf-Nonius CAD4 diffractometer with graphite monochromated CuKα radiation (λ=1.54184Å). The molecular structure was solved to by Direct method and refined by full-matrix least squares to a final R=9.8733 for 2998 unique observed F_(0)>4σ(F_(0)) reflections and 343 parameters.
김문집,홍현표 순천향대학교 기초과학연구소 2011 순천향자연과학연구 논문집 Vol.17 No.1
The structure of C_(28)H_(54)N₄O₄Ni has been determined by X-ray diffraction methods. The crystal system is Monoclinic, space group P□, unit cell constants, a = 8.9424(4)Å, b = 10.1776(5)Å, α=62.50(1)˚, β=87.31(1)˚, γ=66.04(1)˚ V=752.71ų, T=294.9K, Z=1, D_(c)=1.3269Mgm^(-3). The intensity data were collected on an Enraf-Nonius CAD-4 Diffractometer with graphite monochromated Mo Ka radiation (λ=0.71073Å). The molecular structure was solved by direct methods and refined by full-matrix least squares to a final R=6.85% for 2321 unique observed F_(0)>4σ(F_(0)) reflections and 194 parameters.