Invariom approach to electron density studies of open-shell compounds: the case of an organic nitroxide radical
Nelyubina, Yu. V.; Ananyev, I. V.; Novikov, V. V.; Lyssenko, K. A.; RSC Adv. 6 (2016) 91694–; doi:10.1039/C6RA21365K

data_7226668
_publ_section_title
;
 Invariom approach to electron density studies of open-shell compounds:
 the case of an organic nitroxide radical
;
_journal_issue                   94
_journal_name_full               'RSC Adv.'
_journal_page_first              91694
_journal_paper_doi               10.1039/C6RA21365K
_journal_volume                  6
_journal_year                    2016
_chemical_formula_moiety         'C9 H16 N O2'
_chemical_formula_sum            'C9 H16 N O2'
_chemical_formula_weight         170.23
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   difmap
_audit_creation_method           SHELXL-2014/6
_audit_update_record
;
2016-08-23 deposited with the CCDC.
2016-09-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.8102(2)
_cell_length_b                   11.8025(3)
_cell_length_c                   10.2102(2)
_cell_measurement_reflns_used    6066
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      3
_cell_volume                     941.18(4)
_computing_cell_refinement       'APEX2 (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'APEX2 (Bruker, 2005)'
_computing_molecular_graphics    'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_publication_material  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_solution    'APEX2 (Bruker, 2005)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX2 CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0351
_diffrn_reflns_av_unetI/netI     0.0152
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            180671
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         60.000
_diffrn_reflns_theta_min         1.725
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.989
_exptl_absorpt_correction_T_min  0.913
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'APEX2 (Bruker, 2005)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.201
_exptl_crystal_description       prism
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.450
_exptl_crystal_size_mid          0.350
_exptl_crystal_size_min          0.320
_refine_diff_density_max         0.389
_refine_diff_density_min         -0.222
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Flack x determined using 5477 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     173
_refine_ls_number_reflns         14287
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0402
_refine_ls_R_factor_gt           0.0303
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0443P)^2^+0.0145P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0735
_refine_ls_wR_factor_ref         0.0809
_reflns_Friedel_coverage         0.940
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                12326
_reflns_number_total             14287
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ra21365k1.cif
_cod_data_source_block           tempone
_cod_database_code               7226668
_shelx_estimated_absorpt_t_min   0.963
_shelx_estimated_absorpt_t_max   0.974
_shelxl_version_number           2014/6
_shelx_res_checksum              34953