Density and Stability Differences Between Enantiopure and Racemic Salts: Construction and Structural Analysis of a Systematic Series of Crystalline Salt Forms of Methylephedrine
Kennedy, Alan R.; Morrison, Catriona A.; Briggs, Naomi E. B.; Arbuckle, William; Crystal Growth & Design 11 (2011) 1821–; doi:10.1021/cg200030s

data_4500624
_publ_section_title
;
 Density and Stability Differences Between Enantiopure and Racemic Salts:
 Construction and Structural Analysis of a Systematic Series of
 Crystalline Salt Forms of Methylephedrine
;
_journal_issue                   5
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1821
_journal_paper_doi               10.1021/cg200030s
_journal_volume                  11
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_sum            'C12 H21 N O4 S'
_chemical_formula_weight         275.36
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            12
_cell_length_a                   5.8796(6)
_cell_length_b                   21.637(3)
_cell_length_c                   33.840(4)
_cell_measurement_reflns_used    18330
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     4305.0(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean '4096x4096pizel / 62x62mm'
_diffrn_measured_fraction_theta_full 0.948
_diffrn_measured_fraction_theta_max 0.948
_diffrn_measurement_device_type  'Bruker-Nonius APEX II CCD camera'
_diffrn_measurement_method       '\f&\w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0676
_diffrn_reflns_av_sigmaI/netI    0.1506
_diffrn_reflns_limit_h_max       3
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       41
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            11580
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.06
_exptl_absorpt_coefficient_mu    0.232
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.515617
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2(Sheldrick,G.M.,2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.275
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1776
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.491
_refine_diff_density_min         -0.446
_refine_diff_density_rms         0.110
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.20(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     502
_refine_ls_number_reflns         7305
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.1615
_refine_ls_R_factor_gt           0.0963
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+22.7052P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1804
_refine_ls_wR_factor_ref         0.2209
_reflns_number_gt                4723
_reflns_number_total             7305
_reflns_threshold_expression     I>2/s(I)
_cod_data_source_file            cg200030s_si_001.cif
_cod_data_source_block           mepdmeso3
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4500624