Mechanochemical Conversions Between Crystalline Polymorphs of a Complex Organic Solid
Altheimer, Benjamin D.; Pagola, Silvina; Zeller, Matthias; Mehta, Manish A.; Crystal Growth & Design 13 (2013) 3447–; doi:10.1021/cg400344z

data_4507938
_publ_section_title
;
 Mechanochemical Conversions Between Crystalline Polymorphs of a Complex
 Organic Solid
;
_journal_issue                   8
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3447
_journal_paper_doi               10.1021/cg400344z
_journal_volume                  13
_journal_year                    2013
_chemical_absolute_configuration syn
_chemical_formula_sum            'C11 H14 N2 O2'
_chemical_formula_weight         206.24
_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            4
_cell_length_a                   5.073(4)
_cell_length_b                   8.309(7)
_cell_length_c                   26.37(2)
_cell_measurement_reflns_used    555
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      31.09
_cell_measurement_theta_min      2.59
_cell_volume                     1111.5(15)
_computing_cell_refinement       'Apex2 v2009.7-0'
_computing_data_collection       'Apex2 v2009.7-0 (Bruker, 2009)'
_computing_data_reduction        'Apex2 v2009.7-0'
_computing_molecular_graphics    'SHELXTL 6.14'
_computing_publication_material  'SHELXTL 6.14'
_computing_structure_refinement  'SHELXTL 6.14'
_computing_structure_solution
'SHELXTL 6.14 (Bruker, 2000-2003; Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker AXS SMART APEX CCD 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  0.0619
_diffrn_reflns_av_sigmaI/netI    0.0241
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            21530
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.57
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.7463
_exptl_absorpt_correction_T_min  0.6987
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Apex2  v2009.7-0 (Bruker, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.232
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.121
_refine_diff_density_rms         0.031
_refine_ls_extinction_coef       0.027(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     constr
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     157
_refine_ls_number_reflns         1629
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0611
_refine_ls_R_factor_gt           0.0406
_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^)+(0.0418P)^2^+0.2123P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0917
_refine_ls_wR_factor_ref         0.1042
_reflns_number_gt                1237
_reflns_number_total             1629
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cg400344z_si_003.cif
_cod_data_source_block           alphaRT
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        1111.6(15)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4507938