Crystal structures of glycolipids with odd and even numbered alkyl chains
Abe, Yutaka; Fujiwara, Masami; Ohbu, Kazuo; Harata, Kazuaki; Journal of the Chemical Society, Perkin Transactions 2  (2000) 341–; doi:10.1039/a905624f

data_7204912
_publ_section_title
;
 Crystal structures of glycolipids with odd and even numbered alkyl chains
;
_journal_issue                   2
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              341
_journal_paper_doi               10.1039/a905624f
_journal_year                    2000
_chemical_formula_sum            'C18 H34 O7'
_chemical_formula_weight         362.46
_chemical_melting_point          145.1
_chemical_name_systematic
; 
 methyl 6-O-undecanoyl-alpha-D-galactopyranoside  
 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             99_06_01
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 92.83(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.778(1)
_cell_length_b                   7.903(1)
_cell_length_c                   22.326(1)
_cell_measurement_reflns_used    8536
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.39
_cell_measurement_theta_min      0.91
_cell_volume                     1018.2(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Bruker smart'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0414
_diffrn_reflns_av_sigmaI/netI    0.0757
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            5603
_diffrn_reflns_theta_max         26.34
_diffrn_reflns_theta_min         0.91
_diffrn_standards_decay_%        -0.2
_diffrn_standards_number         50
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.625
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            clear
_exptl_crystal_density_diffrn    1.182
_exptl_crystal_description       plate
_exptl_crystal_F_000             396
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.160
_refine_diff_density_min         -0.167
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1.66(130)
_refine_ls_extinction_coef       0.0279(36)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_all   1.017
_refine_ls_goodness_of_fit_obs   1.062
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     230
_refine_ls_number_reflns         3613
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.168
_refine_ls_restrained_S_obs      1.062
_refine_ls_R_factor_all          0.0783
_refine_ls_R_factor_obs          0.0530
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0448P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1398
_refine_ls_wR_factor_obs         0.1092
_reflns_number_observed          2715
_reflns_number_total             3614
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            a905624f.txt
_cod_data_source_block           10
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0448P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0448P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 

2018-01-21
Z value changed to be consistent with give formula
                 miguel
;
_cod_original_cell_volume        1018.29(3)
_cod_original_sg_symbol_H-M      P2(1)
_cod_original_formula_units_Z    3
_cod_database_code               7204912