High-pressure polymorphism in <small>L</small>-cysteine: the crystal structures of <small>L</small>-cysteine-III and <small>L</small>-cysteine-IV
Moggach, Stephen A.; Allan, David R.; Clark, Stewart J.; Gutmann, Matthias J.; Parsons, Simon; Pulham, Colin R.; Sawyer, Lindsay; Acta Crystallographica Section B 62 (2006) 296–309; doi:10.1107/S0108768105038802

data_2100419
_publ_contact_author_name        'Stephen A. Moggach'
_publ_section_title
;
 High-pressure polymorphism in <small>L</small>-cysteine: the crystal
 structures of <small>L</small>-cysteine-III and
 <small>L</small>-cysteine-IV
;
_journal_coeditor_code           BS5023
_journal_date_accepted           2005-11-22
_journal_date_recd_electronic    2005-09-20
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              296
_journal_page_last               309
_journal_paper_category          FA
_journal_paper_doi               10.1107/S0108768105038802
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C3 H7 N1 O2 S1'
_chemical_formula_sum            'C3 H7 N O2 S'
_chemical_formula_weight         121.16
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     'From Kerr et al. (1975)'
_audit_creation_method           CRYSTALS_ver_12.82
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.1109(10)
_cell_length_b                   12.1621(15)
_cell_length_c                   5.4210(7)
_cell_measurement_reflns_used    2797
_cell_measurement_temperature    293
_cell_measurement_theta_max      56
_cell_measurement_theta_min      6
_cell_volume                     534.76(12)
_computing_cell_refinement       'SAINT (Siemens ,1995)'
_computing_data_collection       'SMART (Siemens, 1993)'
_computing_data_reduction        'SAINT (Siemens ,1995)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      293
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.945
_diffrn_measurement_device_type  'Bruker SMART'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.053
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            4806
_diffrn_reflns_theta_full        27.472
_diffrn_reflns_theta_max         28.918
_diffrn_reflns_theta_min         3.019
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.490
_exptl_absorpt_correction_T_max  0.92
_exptl_absorpt_correction_T_min  0.82
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Siemens, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.505
_exptl_crystal_description       block
_exptl_crystal_F_000             256
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.31
_refine_diff_density_min         -0.22
_refine_ls_abs_structure_details 'Flack, 2 Friedel-pairs'
_refine_ls_abs_structure_Flack   0.08(10)
_refine_ls_extinction_coef       114(19)
_refine_ls_extinction_method
'Larson 1970 Crystallographic Computing eq 22'
_refine_ls_goodness_of_fit_ref   1.0268
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     72
_refine_ls_number_reflns         1309
_refine_ls_number_restraints     2
_refine_ls_R_factor_all          0.0362
_refine_ls_R_factor_gt           0.0343
_refine_ls_shift/su_max          0.000349
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(F^2^) + ( 0.06P)^2^ + 0.01P]
where P=(max(Fo^2^,0) + 2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0884
_refine_ls_wR_factor_gt          0.0879
_refine_ls_wR_factor_ref         0.0884
_reflns_number_gt                1197
_reflns_number_total             1311
_reflns_threshold_expression     I>2.00u(I)
_cod_data_source_file            bs5023.cif
_cod_data_source_block           cys100
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21 21 21 '
_cod_original_formula_sum        'C3 H7 N1 O2 S1'
_cod_database_code               2100419