++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + XPREP - DATA PREPARATION & RECIPROCAL SPACE EXPLORATION Ver. 5.1/NT + + COPYRIGHT(c) 1997 Bruker Analytical X-ray Systems All Rights Reserved + + 06skc0037 started at 11:37:47 on 31-AUG-0 + ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Original cell in Angstroms and degrees: 5.822 7.464 9.806 79.05 77.62 81.68 7640 Reflections read from file 06skc0037.hkl; mean (I/sigma) = 4.38 Lattice exceptions: P A B C I F Obv Rev All N (total) = 0 3830 3810 3794 3819 5717 5099 5083 7640 N (int>3sigma) = 0 2117 2070 2129 2121 3158 2840 2802 4230 Mean intensity = 0.0 227.0 234.5 223.4 239.7 228.3 230.8 209.5 227.1 Mean int/sigma = 0.0 4.5 4.3 4.5 4.4 4.4 4.5 4.4 4.4 Lattice type: P chosen Volume: 406.22 ------------------------------------------------------------------------------- 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: 5.822 7.464 9.806 79.05 77.62 81.68 Niggli form: a.a = 33.89 b.b = 55.72 c.c = 96.15 b.c = 13.91 a.c = 12.24 a.b = 6.29 ------------------------------------------------------------------------------- SEARCH FOR HIGHER METRIC SYMMETRY ------------------------------------------------------------------------------ Option A: FOM = 0.000 deg. TRICLINIC P-lattice R(int) = 0.108 [ 5746] Cell: 5.822 7.464 9.806 79.05 77.62 81.68 Volume: 406.22 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 3830 3810 3794 3819 5717 5099 5083 7640 N (int>3sigma) = 0 2117 2070 2129 2121 3158 2840 2802 4230 Mean intensity = 0.0 227.0 234.5 223.4 239.7 228.3 230.8 209.5 227.1 Mean int/sigma = 0.0 4.5 4.3 4.5 4.4 4.4 4.5 4.4 4.4 Crystal system A and Lattice type P selected Mean |E*E-1| = 0.907 [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 0.108 5746 0.0 / 4.4 2.64 [B] P1 # 1 chiral 1 700 0.108 5746 0.0 / 4.4 5.33 Option [A] chosen ------------------------------------------------------------------------------- Determination of unit-cell contents Formula: C10H16O5N1 Formula weight = 230.24 Tentative Z (number of formula units/cell) = 1.0 giving rho = 0.941, non-H atomic volume = 25.4 and following cell contents and analysis: C 10.00 52.16 % H 16.00 7.00 % N 1.00 6.09 % O 5.00 34.75 % F(000) = 123.0 Mo-K(alpha) radiation Mu (mm-1) = 0.08 ------------------------------------------------------------------------------- File 06skc0037p-1.ins set up as follows: TITL 06skc0037p-1 in P-1 CELL 0.71073 5.8219 7.4643 9.8058 79.046 77.621 81.676 ZERR 1.00 0.0003 0.0006 0.0007 0.003 0.004 0.004 LATT 1 SFAC C H N O UNIT 10 16 1 5 TEMP 0.04 TREF HKLF 4 END 7640 Reflections written to new reflection file 06skc0037p-1.hkl -------------------------------------------------------------------------------