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sunwei4172至尊木蟲 (正式寫手)
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[求助]
求晶胞結(jié)構(gòu)(六方相二氧化鍺)
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緊急求助: 有沒有比較了解二氧化鍺的前輩,幫忙這點(diǎn)一下。 晚輩著急,需要六方相,α-石英結(jié)構(gòu)的二氧化鍺晶胞結(jié)構(gòu)。本人才疏學(xué)淺,請前輩們多多指教。。。 |
鐵桿木蟲 (職業(yè)作家)
鐵桿木蟲 (職業(yè)作家)
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α-石英是三方相,六方相是Beta石英。 *data for ICSD #59625 Coll Code 59625 Rec Date 2005/04/01 Chem Name Germanium Oxide Structured Ge O2 Sum Ge1 O2 ANX AX2 D(calc) 4.29 Title A neutron diffraction study of the thermal stability of the alpha- quartz-type structure in germanium dioxide Author(s) Haines, J.;Cambon, O.;Philippot, E.;Chapon, L.;Hull, S. Reference Journal of Solid State Chemistry (2002), 166, 434-441 Unit Cell 4.98535(2) 4.98535(2) 5.64503(4) 90. 90. 120. Vol 121.51 Z 3 Space Group P 31 2 1 SG Number 152 Cryst Sys trigonal/rhombohedral Pearson hP9 Wyckoff c a R Value .028 Red Cell P 4.985 4.985 5.645 90 90 120 121.505 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Neutron diffraction (powder) The structure has been assigned a PDF number (calculated powder diffraction data): 01-073-9109 Rietveld profile refinement applied Temperature in Kelvin: 298 Structure type : Quartz,low Atom # OX SITE x y z SOF H Ge 1 +4 3 a .4512(1) 0 .3333 1. 0 O 1 -2 6 c .3971(2) .3023(1) .2428(1) 1. 0 Lbl Type U11 U22 U33 U12 U13 U23 Ge1 Ge4+ .0088(1) .0069(3) .0070(2) 0 0 .0000(2) O1 O2- .0167(4) .0136(3) .0107(2) .0103(2) .0039(3) .0035(2) *end for ICSD #59625 |
鐵桿木蟲 (職業(yè)作家)
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*data for ICSD #66595 Coll Code 66595 Rec Date 1994/01/19 Mod Date 2004/10/01 Chem Name Germanium Oxide Structured Ge O2 Sum Ge1 O2 ANX AX2 D(calc) 4.63 Title Structure refinement of GeO2 polymorphs at high pressures and temperatures by energy-dispersive spectra of powder diffraction Author(s) Yamanaka, T.; Ogata, K. Reference Journal of Applied Crystallography (1991), 24, 111-118 Unit Cell 4.8310(6) 4.8310(6) 5.568(1) 90. 90. 120. Vol 112.54 Z 3 Space Group P 32 2 1 SG Number 154 Cryst Sys trigonal/rhombohedral Pearson hP9 Wyckoff c a R Value .073 Red Cell P 4.831 4.831 5.568 90 90 120 112.539 Trans Red 1.000 0.000 0.000 / 0.000 1.000 0.000 / 0.000 0.000 1.000 Comments Atoms shifted by 0 0 2/3 to fit standard setting The structure has been assigned a PDF number (calculated powder diffraction data): 01-085-1518 Pressure in MPa: 4850 Synchrotron radiation (powder) Structure type : Quartz,low Atom # OX SITE x y z SOF H ITF(B) Ge 1 +4 3 a 0.4470(11) 0 0.6667 1. 0 0.6 O 1 -2 6 c 0.3896(15) 0.3129(12) 0.7480(11) 1. 0 1.4 *end for ICSD #66595 |
鐵桿木蟲 (職業(yè)作家)
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