++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + XPREP - DATA PREPARATION & RECIPROCAL SPACE EXPLORATION Ver. 5.1/NT + + COPYRIGHT(c) 1997 Bruker Analytical X-ray Systems All Rights Reserved + + s92 started at 16:36:16 on 05-APR-0 + ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Original cell in Angstroms and degrees: 11.322 13.287 13.932 110.44 98.07 115.16 33992 Reflections read from file s92.hkl; mean (I/sigma) = 11.36 Lattice exceptions: P A B C I F Obv Rev All N (total) = 0 16980 17002 16970 17027 25476 22689 22682 33992 N (int>3sigma) = 0 12910 13031 13085 13013 19513 17403 17282 25980 Mean intensity = 0.0 94.7 97.7 98.5 99.4 96.9 97.7 98.0 97.0 Mean int/sigma = 0.0 11.4 11.5 11.7 11.4 11.5 11.5 11.4 11.4 Lattice type: P chosen Volume: 1671.26 ------------------------------------------------------------------------------- DETERMINATION OF REDUCED (NIGGLI) CELL Transformation from original cell (HKLF-matrix): 1.0000 0.0000 0.0000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000 Unitcell: 11.322 13.287 13.932 110.44 98.07 115.16 Niggli form: a.a = 128.18 b.b = 176.55 c.c = 194.10 b.c = -64.64 a.c = -22.15 a.b = -63.96 ------------------------------------------------------------------------------- SEARCH FOR HIGHER METRIC SYMMETRY ------------------------------------------------------------------------------ Option A: FOM = 0.000 deg. TRICLINIC P-lattice R(int) = 0.049 [ 26302] Cell: 11.322 13.287 13.932 110.44 98.07 115.16 Volume: 1671.26 Matrix: 1.0000 0.0000 0.0000 0.0000 1.0000 0.0000 0.0000 0.0000 1.0000 Option A selected ------------------------------------------------------------------------------- SPACE GROUP DETERMINATION Lattice exceptions: P A B C I F Obv Rev All N (total) = 0 16980 17002 16970 17027 25476 22689 22682 33992 N (int>3sigma) = 0 12910 13031 13085 13013 19513 17403 17282 25980 Mean intensity = 0.0 94.7 97.7 98.5 99.4 96.9 97.7 98.0 97.0 Mean int/sigma = 0.0 11.4 11.5 11.7 11.4 11.5 11.5 11.4 11.4 Crystal system A and Lattice type P selected Mean |E*E-1| = 0.976 [expected .968 centrosym and .736 non-centrosym] Chiral flag NOT set Systematic absences not required for triclinic Option Space Group No. Type Axes CSD R(int) N(eq) Syst. Abs. CFOM [A] P-1 # 2 centro 1 8646 0.049 26302 0.0 / 11.4 0.89 [B] P1 # 1 chiral 1 700 0.049 26302 0.0 / 11.4 6.76 Option [A] chosen ------------------------------------------------------------------------------- Determination of unit-cell contents Formula: C6H12O6 Formula weight = 180.16 Tentative Z (number of formula units/cell) = 8.0 giving rho = 1.432, non-H atomic volume = 17.4 and following cell contents and analysis: C 48.00 40.00 % H 96.00 6.71 % O 48.00 53.29 % F(000) = 768.0 Mo-K(alpha) radiation Mu (mm-1) = 0.13 ------------------------------------------------------------------------------- File s92.ins set up as follows: TITL s92 in P-1 CELL 0.71073 11.3216 13.2873 13.9320 110.438 98.073 115.161 ZERR 8.00 0.0003 0.0006 0.0009 0.004 0.004 0.004 LATT 1 SFAC C H O UNIT 48 96 48 TREF HKLF 4 END -------------------------------------------------------------------------------