Comparison of the effects of pressure on three layered hydrates: a partially successful attempt to predict a high-pressure phase transition
Johnstone, Russell D. L.; Lennie, Alistair R.; Parsons, Simon; Pidcock, Elna; Warren, John E.; Acta Crystallographica Section B 65 (2009) 731–748; doi:10.1107/S0108768109039469

data_2104646
_publ_section_title
;
 Comparison of the effects of pressure on three layered hydrates: a
 partially successful attempt to predict a high-pressure phase
 transition
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              731
_journal_page_last               748
_journal_paper_doi               10.1107/S0108768109039469
_journal_volume                  65
_journal_year                    2009
_chemical_formula_moiety         'C5 H13 N1 O3'
_chemical_formula_sum            'C5 H13 N O3'
_chemical_formula_weight         135.16
_chemical_name_common            'Betaine monohydrate'
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   8.8188(6)
_cell_length_b                   10.7838(17)
_cell_length_c                   11.9105(8)
_cell_measurement_reflns_used    971
_cell_measurement_temperature    293
_cell_measurement_theta_max      17
_cell_measurement_theta_min      3
_cell_volume                     1132.7(2)
_computing_cell_refinement       'Apex2 (Bruker AXS, 2006)'
_computing_data_collection       'Apex2 (Bruker AXS, 2006)'
_computing_data_reduction        'Apex2 (Bruker AXS, 2006)'
_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 0.577
_diffrn_measured_fraction_theta_max 0.526
_diffrn_measurement_device       'Bruker Kappa Apex2'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  silicon
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.47620
_diffrn_reflns_av_R_equivalents  0.0810
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5263
_diffrn_reflns_reduction_process
;
 Merged with SORTAV
 R.H. Blessing, (1987) Cryst. Rev. 1, 3-58
;
_diffrn_reflns_theta_full        13.394
_diffrn_reflns_theta_max         17.624
_diffrn_reflns_theta_min         2.304
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.129
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.80
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Siemens, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.585
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.51
_refine_diff_density_min         -0.50
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9832
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     86
_refine_ls_number_reflns         465
_refine_ls_number_restraints     213
_refine_ls_R_factor_all          0.0780
_refine_ls_R_factor_gt           0.0449
_refine_ls_shift/su_max          0.000076
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method= Modified Sheldrick
 w=1/[\s^2^(Fo) + ( 0.00P)^2^ + 0.03P]
 ,where P=(max(Fo,0) + 2Fc)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0637
_refine_ls_wR_factor_gt          0.0513
_refine_ls_wR_factor_ref         0.0513
_reflns_number_gt                465
_reflns_number_total             642
_reflns_threshold_expression     I>2.0\s(I)
_cod_data_source_file            ws5073.cif
_cod_data_source_block           BTM6.1GPa
_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 b c a '
_cod_original_formula_sum        'C5 H13 N1 O3'
_cod_database_code               2104646
_cod_database_fobs_code          2104646