Pressure-induced pseudorotation in crystalline pyrrolidine.
Dziubek, Kamil F.; Katrusiak, Andrzej; Physical chemistry chemical physics : PCCP 13 (2011) 15428–15431; doi:10.1039/c1cp21087d

data_7206439
_publ_section_title
;
 Pressure-induced pseudorotation in crystalline pyrrolidine.
;
_journal_issue                   34
_journal_name_full               'Physical chemistry chemical physics : PCCP'
_journal_page_first              15428
_journal_page_last               15431
_journal_paper_doi               10.1039/c1cp21087d
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C4 H9 N'
_chemical_formula_sum            'C4 H9 N'
_chemical_formula_weight         71.12
_chemical_melting_point          210.15
_chemical_name_common            pyrrolidine
_chemical_name_systematic
;
azacyclopentane
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 110.579(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.6367(6)
_cell_length_b                   5.2081(3)
_cell_length_c                   10.6375(8)
_cell_measurement_reflns_used    2331
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.96
_cell_measurement_theta_min      2.67
_cell_volume                     447.95(6)
_computing_cell_refinement       'CrysAlisPro (Oxford Diffraction, 2010)'
_computing_data_collection       'CrysAlisPro (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlisPro (Oxford Diffraction, 2010)'
_computing_molecular_graphics    'X-Seed (Barbour, 1999)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.930
_diffrn_measured_fraction_theta_max 0.930
_diffrn_measurement_device_type  'KM-4 CCD'
_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  0.0142
_diffrn_reflns_av_sigmaI/netI    0.0137
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4396
_diffrn_reflns_theta_full        29.68
_diffrn_reflns_theta_max         29.68
_diffrn_reflns_theta_min         2.52
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.064
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.055
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cylinder
_exptl_crystal_F_000             160
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_exptl_crystal_size_rad          0.15
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.146
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     73
_refine_ls_number_reflns         1184
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0450
_refine_ls_R_factor_gt           0.0361
_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^)+(0.0619P)^2^+0.0671P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0986
_refine_ls_wR_factor_ref         0.1050
_reflns_number_gt                987
_reflns_number_total             1184
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1cp21087d.txt
_cod_data_source_block           pyrrolidine_100K
_cod_original_cell_volume        447.95(5)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7206439