++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + XPREP - DATA PREPARATION & RECIPROCAL SPACE EXPLORATION Ver. 5.1/NT + + COPYRIGHT(c) 1997 Bruker Analytical X-ray Systems All Rights Reserved + + 07skc0009 started at 08:45:49 on 12-FEB-0 + ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Original cell in Angstroms and degrees: 8.306 10.857 15.669 71.63 77.61 81.80 19972 Reflections read from file 07skc0009.hkl; mean (I/sigma) = 4.17 Lattice exceptions: P A B C I F Obv Rev All N (total) = 0 9950 10020 9878 9954 14924 13363 13371 19972 N (int>3sigma) = 0 4599 4576 3997 4458 6586 6067 6102 9066 Mean intensity = 0.0 117.3 117.7 59.1 104.2 98.2 111.7 109.5 108.8 Mean int/sigma = 0.0 4.4 4.4 3.8 4.3 4.2 4.3 4.3 4.3 Lattice type: P chosen Volume: 1305.36 ------------------------------------------------------------------------------- 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: 8.306 10.857 15.669 71.63 77.61 81.80 Niggli form: a.a = 68.99 b.b = 117.87 c.c = 245.51 b.c = 53.62 a.c = 27.93 a.b = 12.86 ------------------------------------------------------------------------------- SEARCH FOR HIGHER METRIC SYMMETRY ------------------------------------------------------------------------------ Option A: FOM = 0.000 deg. TRICLINIC P-lattice R(int) = 0.086 [ 13986] Cell: 8.306 10.857 15.669 71.63 77.61 81.80 Volume: 1305.36 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 9950 10020 9878 9954 14924 13363 13371 19972 N (int>3sigma) = 0 4599 4576 3997 4458 6586 6067 6102 9066 Mean intensity = 0.0 117.3 117.7 59.1 104.2 98.2 111.7 109.5 108.8 Mean int/sigma = 0.0 4.4 4.4 3.8 4.3 4.2 4.3 4.3 4.3 Crystal system A and Lattice type P selected Mean |E*E-1| = 0.942 [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 0.086 13986 0.0 / 4.3 2.40 [B] P1 # 1 chiral 1 700 0.086 13986 0.0 / 4.3 6.73 Option [A] chosen ------------------------------------------------------------------------------- Determination of unit-cell contents Formula: C12H23O6N1 Formula weight = 277.31 Tentative Z (number of formula units/cell) = 4.0 giving rho = 1.411, non-H atomic volume = 17.2 and following cell contents and analysis: C 48.00 51.97 % H 92.00 8.36 % N 4.00 5.05 % O 24.00 34.62 % F(000) = 600.0 Mo-K(alpha) radiation Mu (mm-1) = 0.11 ------------------------------------------------------------------------------- File 07skc0009p-1.ins set up as follows: TITL 07skc0009p-1 in P-1 CELL 0.71073 8.3059 10.8568 15.6687 71.627 77.606 81.799 ZERR 4.00 0.0004 0.0008 0.0011 0.003 0.004 0.004 LATT 1 SFAC C H N O UNIT 48 92 4 24 TEMP 0.02 TREF HKLF 4 END 19972 Reflections written to new reflection file 07skc0009p-1.hkl -------------------------------------------------------------------------------