Molecular aggregation in selected crystalline 1:1 complexes of hydrophobic <small>D</small>- and <small>L</small>-amino acids. II. The <small>D</small>-norleucine series
Dalhus, Bjørn; Görbitz, Carl Henrik; Acta Crystallographica Section C 55 (1999) 1105–1112; doi:10.1107/S0108270199003649

data_2008707
_publ_section_title
;
 Molecular aggregation in selected crystalline 1:1 complexes of
 hydrophobic <small>D</small>- and <small>L</small>-amino acids. II.
 The <small>D</small>-norleucine series
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1105
_journal_page_last               1112
_journal_paper_doi               10.1107/S0108270199003649
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C6 H13 NO2 , C6 H13 NO2 '
_chemical_formula_sum            'C12 H26 N2 O4'
_chemical_formula_weight         262.35
_chemical_name_systematic
;
 L-alloIsoleucine:D-Norleucine
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 100.8378(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   31.4433(4)
_cell_length_b                   4.76220(10)
_cell_length_c                   9.9363(2)
_cell_measurement_reflns_used    6199
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      49.57
_cell_measurement_theta_min      2.25
_cell_volume                     1461.32(5)
_computing_cell_refinement       'SAINT (Siemens, 1995)'
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        SAINT
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_measurement_device
;
Siemens SMART CCD area-detector diffractometer
;
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0242
_diffrn_reflns_av_sigmaI/netI    0.0370
_diffrn_reflns_limit_h_max       66
_diffrn_reflns_limit_h_min       -65
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            18157
_diffrn_reflns_theta_max         49.57
_diffrn_reflns_theta_min         2.25
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.991
_exptl_absorpt_correction_T_min  0.944
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.192
_exptl_crystal_density_meas      ?
_exptl_crystal_description       Plate
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.65
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.379
_refine_diff_density_min         -0.299
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.075
_refine_ls_goodness_of_fit_obs   1.066
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         10942
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.075
_refine_ls_restrained_S_obs      1.066
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_obs          0.0394
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0513P)^2^+0.0971P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1052
_refine_ls_wR_factor_obs         0.0980
_reflns_number_observed          9640
_reflns_number_total             10942
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            os1053.cif
_cod_data_source_block           B2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measureed' was changed to
'?' - the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
1/[\s^2^(Fo^2^)+(0.0513P)^2^+0.0971P] 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^)+(0.0513P)^2^+0.0971P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               2008707