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Êý¾Ý¿âÉÏÕÒ²»µ½Ò»¸öË®µÄ£¬Ö»ÓÐ6¸öË®µÄ *data for ICSD #14269 Coll Code 14269 Rec Date 1980/01/01 Mod Date 2000/07/15 Chem Name Magnesium Ammonium Phosphate(V) Hexahydrate Structured Mg (N H4) (P O4) (H2 O)6 Sum H16 Mg1 N1 O10 P1 ANX ABXY10 Min Name Struvite D(calc) 1.71 Title The crystal structure of struvite, Mg N H4 P O4 (H2 O)6 Author(s) Whitaker, A.;Jeffery, J.W. Reference Acta Crystallographica B (24,1968-38,1982) (1970), 26, 1429-1439 Acta Crystallographica B (24,1968-38,1982) (1970), 26, 1440-1444 Unit Cell 6.941(2) 6.137(2) 11.199(4) 90. 90. 90. Vol 477.04 Z 2 Space Group P m n 21 SG Number 31 Cryst Sys orthorhombic Pearson oP58 Wyckoff b3 a7 R Value .028 Red Cell P 6.137 6.941 11.199 89.999 89.999 90 477.043 Trans Red 0.000 1.000 0.000 / 1.000 0.000 0.000 / 0.000 0.000 -1.000 Comments Compound with mineral name: Struvite The structure has been assigned a PDF number (calculated powder diffraction data): 01-071-2089 The structure has been assigned a PDF number (experimental powder diffraction data): 15-762 Temperature factors available Structure type : MgNH4AsO4(H2O)6 X-ray diffraction from single crystal At least one temperature factor is implausible or meaningless but agrees with the value given in the paper. Position of 6 Elements of H Are Undetermined. Atom # OX SITE x y z SOF H ITF(B) P 1 +5 2 a 0 -.00661(14) -.00052(8) 1. 0 0 O 1 -2 2 a 0 -.02221(37) 0.86279(20) 1. 0 0 O 2 -2 2 a 0 0.76229(32) 0.05350(21) 1. 0 0 O 3 -2 4 b 0.18165(22) 0.11371(25) 0.04172(15) 1. 0 0 Mg 1 +2 2 a 0 0.37648(19) 0.37185(11) 1. 0 0 O 4 -2 2 a 0 0.68219(41) 0.28610(22) 1. H2 0 O 5 -2 2 a 0 0.08012(42) 0.46451(25) 1. H2 0 O 6 -2 4 b 0.21797(24) 0.26377(29) 0.26205(14) 1. H2 0 O 7 -2 4 b 0.21055(22) 0.48534(28) 0.48494(16) 1. H2 0 N 1 -3 2 a 0 0.36849(50) 0.73063(25) 1. H4 0 H 1 +1 2 a 0 0.3034(75) 0.7507(38) 1. 0 4.00(13) H 2 +1 2 a 0 0.7131(73) 0.2222(44) 1. 0 4.00(13) H 3 +1 2 a 0 0.7814(78) 0.3150(44) 1. 0 4.00(12) H 4 +1 4 b 0.0989(48) 0.0233(45) 0.4947(27) 1. 0 4.0(9) H 5 +1 4 b 0.1883(59) 0.1874(59) 0.2059(35) 1. 0 4.0(9) H 6 +1 4 b 0.2242(44) 0.8150(65) 0.7930(26) 1. 0 4.00(11) H 7 +1 4 b 0.2348(51) 0.5868(60) 0.4994(31) 1. 0 4.(1) H 8 +1 4 b 0.1846(54) 0.5995(55) 0.0026(29) 1. 0 4.0(9) Lbl Type B11 B22 B33 B12 B13 B23 P1 P5+ 0.00788(13) 0.00749(18) 0.00243(4) 0 0 -.00015(21) O1 O2- 0.01193(48) 0.01343(69) 0.00226(16) 0 0 -.00028(62) O2 O2- 0.01222(52) 0.00838(66) 0.00382(17) 0 0 -.00022(60) O3 O2- 0.00877(30) 0.01152(40) 0.00375(11) -.00243(72) -.00032(35) -.00216(41) Mg1 Mg2+ 0.0085(2) 0.00939(29) 0.00301(7) 0 0 0.00011(28) O4 O2- 0.02966(89) 0.01125(78) 0.00374(21) 0 0 0.00335(63) O5 O2- 0.00877(54) 0.01819(84) 0.00950(32) 0 0 0.01499(72) O6 O2- 0.01237(41) 0.01851(54) 0.00358(14) 0.00553(80) -.00117(39) -.00260(47) O7 O2- 0.01272(38) 0.01183(44) 0.00681(16) 0.00074(76) -.00838(43) -.00512(50) N1 N3- 0.0144(7) 0.01068(87) 0.00371(22) 0 0 0.00638(71) Std. Notes Transformation Method: Tidy TRANS -x,-y,-z Std. Cell 6.9410 6.1370 11.1990 90 90 90 Std. Vol. 477.04 Std. Z 2 Std. SG PMN21 Std. Atom Atom # OX SITE x y z SOF P 1 +5 2 a 0 .00661 .00052 1. O 1 -2 2 a 0 .02221 .13721 1. O 2 -2 2 a 0 .23771 .94650 1. O 3 -2 4 b .31835 .11371 .45828 1. Mg 1 +2 2 a 0 .62352 .62815 1. O 4 -2 2 a 0 .31781 .71390 1. O 5 -2 2 a 0 .91988 .53549 1. O 6 -2 4 b .28203 .26377 .23795 1. O 7 -2 4 b .28945 .48534 .01506 1. N 1 -3 2 a 0 .63151 .26937 1. H 1 +1 2 a 0 .69660 .24930 1. H 2 +1 2 a 0 .28690 .77780 1. H 3 +1 2 a 0 .21860 .68500 1. H 4 +1 4 b .40110 .02330 .00530 1. H 5 +1 4 b .31170 .18740 .29410 1. H 6 +1 4 b .22420 .18500 .20700 1. H 7 +1 4 b .26520 .58680 .00060 1. H 8 +1 4 b .31540 .59950 .49740 1. *end for ICSD #14269 |
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2Â¥2012-06-13 15:04:48
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