http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김문집,전기배 순천향대학교 기초과학연구소 2008 순천향자연과학연구 논문집 Vol.14 No.2
The structure of C_(13)H_(12)N₂OCu½Cl has been determined by X-ray diffraction methods. The crystal system is monoclinic, space group P1^( ̄), unit cell constants, a=8.705(3)Å, b=9.818(3)Å, c=9.822(4)Å, α=111.28(2)˚, β=96.75(5)˚, γ=90.25(4)˚, V=775.8(5)ų, T= 293(2)K, Z=2, D_(C) = 1.402Mgm^(-)³. The intensity data were collected on an Enraf-Nonius CAD-4 Diffractometer with graphite monochromated Cu Ka radiation (λ=1.54184Å). The molecular structure was solved by direct methods and refined by full-matrix least squares to a final R = 5.76% for 2684 unique observed F_(0) > 4σ(F_(0)) reflections and 188 parameters.
김용채,이창희,이진호,서일환,추금홍,이정수,성백석,김문집 순천향대학교 기초과학연구소 1998 순천향자연과학연구 논문집 Vol.4 No.2
The anisotropic thermal factor of an atom located at a general position has six parameters as follows: ?? If the atom is placed at a special position, the anisotropic thermal factor must have the same symmetry as the special position has. The symmetries at the special positions reduce the 6 anisotropic thermal parameters to 4 or 3 or 2 or 1 and there are 18 different kinds of anisotropic thermal factors altogether for special positions in 230 space groups.
Structure Factor와 Electron Density
金文執,秋錦洪,李珍昊,金珍圭,朴泳秀,徐日煥 충남대학교 기초과학연구소 2000 忠南科學硏究誌 Vol.27 No.2
If electron density ρ(xyz) in a single crystal is known, structure factor F(hkl) can be calculated and, on the contrary, electron density map can be drawn if the structure factor including its phase is known. Therefore the functions ρ(xyz) and F(hkl) are said to be Fourier transforms of each other.
X-線粉末 廻折法에 의한 Cadmium Sulfide의 精密 格子常數 測定
金文執,徐日煥 순천향대학교 1983 논문집 Vol.6 No.3
In our previous paper the crystallographic structure of cadmium sulfide had been determined. In the present paper we calculated the precise lattice parameter of them. We gave the method of extrapolation a trial for CdS having hexagonal and cubic structures. The final values calculated from the method are A=6.723128 Å, B=4.148240 Å for hexagonal CdS, and A=5.8604 Å for cubic. The correct result has been proved by the good agreement with other reported values.
X-線 廻折方法에 依한 Sodium Chloride 單結晶의 構造 硏究
金文執,尹和重,徐日煥 충남대학교 자연과학연구소 1981 忠南科學硏究誌 Vol.8 No.1
The procedure for the crystal structure analysis by means of the X-ray powder diffraction method has been shown using the sodium chloride as a sample. The twelve X-ray diffraction intensity peaks for sodium chloride powder were collected rotating 2θhkl. Bragg angle of X-ray diffractometer from 20 to 160 degrees, in which Cu Kα radiation filtered by nickel had been used. For assigning indices of each reflecting plane, the relationship between lattice parameter and interplanar spacing has been used. This result has shown that sodium chloride is face-centered cubic, space group ?? with unit cell dimension a=5.63Å and z=4. The experimental and theoretical integrated intensities of the reflecting planes are in good agreement with each other.
C₄H_9O_6N(Ammonium Hydrogen D-Tartrate)의결정 구조
김문집,박해윤,박호종 순천향대학교 기초과학연구소 2001 순천향자연과학연구 논문집 Vol.7 No.1
The structure of Ammonium Hydrogen D-Tartrate(C4H9O6N) has been determined by X-ray diffraction methods. The crystals are Orthorhombic, space group P212121, unit cell constants, a=7.6431(7)Å, b=7.8418(5)Å, c= 11.0605(11)Å, α= β= γ=90˚, V=662.92(10)Å3, T= 296(2)K, Z=4, Dc= 1.6744Mgm-3. The intensity data were collected on an Enarf-Noius CAD-4 Diffractometer with graphite monochromated Mo Kα radiation. The molecular structure was solved by direct method and refined by full-matrix least squares to a final R = 3.18% for 682 unique observed F0>4σ(F0) reflections and 137 parameters. The molecular have 8 intermolecular hydrogen bonds.
C_(30)H_(38)N_(6)Cu₂O₂S₂의 결정 구조
김문집 순천향대학교 기초과학연구소 2006 순천향자연과학연구 논문집 Vol.12 No.2
The structure of C_(30)H_(38)N_(6)Cu_(2)O_(2)S_(2) has been determined by X-ray diffraction methods. The crystal system is Thclinic, space group P1 ̄, unit cell constants, a =9.6791 (9 )A˚, b=18.1347(14)A˚, c=9.6785(6)A˚, α=98.700(5)˚, β=116.5.30(6)˚, γ=87.290(7)˚, V=1517.6(2)A˚, T=295(2)K, Z=2, D_(c)=1.545Mgm^(-3). The intensity data were collected on an Enraf-Nunius CADU4 Diffractometer with graphite monochromated Mo Ka. radiation (λ=0.71073 A˚). The molecular structure was solved by direct methods and refined by full-matrix least squares to a final R=4.99% for 4093 unique observed F_(0) > 4σ (F_(0)) reflections and 417 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.
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.