Molecular aggregation in crystalline 1:1 complexes of hydrophobic <small>D</small>- and <small>L</small>-amino acids. I. The <small>L</small>-isoleucine series
Dalhus, Bjørn; Görbitz, Carl Henrik; Acta Crystallographica Section B 55 (1999) 424–431; doi:10.1107/S0108768198013494

data_2003104
_publ_section_title
;
 Molecular aggregation in crystalline 1:1 complexes of hydrophobic
 <small>D</small>- and <small>L</small>-amino acids. I. The
 <small>L</small>-isoleucine series
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              424
_journal_page_last               431
_journal_paper_doi               10.1107/S0108768198013494
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         'C6 H13 N1 O2,C6 H13 N1 O2'
_chemical_formula_sum            'C12 H26 N2 O4'
_chemical_formula_weight         262.35
_chemical_name_systematic
;
  L-Isoleucine:D-Leucine
;
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_audit_creation_method           SHELXL
_cell_angle_alpha                91.516(2)
_cell_angle_beta                 98.603(2)
_cell_angle_gamma                110.376(2)
_cell_formula_units_Z            1
_cell_length_a                   5.1933(3)
_cell_length_b                   5.4064(3)
_cell_length_c                   13.6968(7)
_cell_measurement_reflns_used    1220
_cell_measurement_temperature    150(2)
_cell_volume                     355.16(3)
_computing_cell_refinement       'SAINT (Siemens, 1995)'
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_structure_refinement  'SHELXTL (Sheldrick, 1994)'
_computing_structure_solution    'SHELXTL (Sheldrick, 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_measurement_device
'Siemens SMART CCD area-detector diffractometer'
_diffrn_measurement_method       \w
_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  0.0318
_diffrn_reflns_av_sigmaI/netI    0.0683
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            5657
_diffrn_reflns_theta_max         40.58
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.982
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sheldrick (1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_description       block
_exptl_crystal_F_000             144
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.591
_refine_diff_density_min         -0.395
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.119
_refine_ls_goodness_of_fit_obs   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         4689
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.118
_refine_ls_restrained_S_obs      1.059
_refine_ls_R_factor_all          0.0665
_refine_ls_R_factor_obs          0.0526
_refine_ls_shift/esd_max         -0.006
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0348P)^2^+0.0860P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1340
_refine_ls_wR_factor_obs         0.1181
_reflns_number_observed          4082
_reflns_number_total             4689
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            os0011.cif
_cod_data_source_block           B2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0348P)^2^+0.0860P] 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^)+(0.0348P)^2^+0.0860P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2003104