Radicals organized by disk shaped aromatics ‒ polymorphism and co-crystals that tune inter-electron exchange
Akpinar, Handan; Mague, Joel T.; Novak, Miguel A.; Friedman, Jonathan R.; Lahti, Paul M.; CrystEngComm 14 (2012) 1515–; doi:10.1039/c1ce06096a

data_7207339
_publ_section_title
;
 Radicals organized by disk shaped aromatics -- polymorphism and
 co-crystals that tune inter-electron exchange
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              1515
_journal_paper_doi               10.1039/c1ce06096a
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C23 H21 N2 O2'
_chemical_formula_weight         357.42
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 94.737(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9817(2)
_cell_length_b                   7.36870(10)
_cell_length_c                   25.0583(5)
_cell_measurement_temperature    293(2)
_cell_volume                     1836.80(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_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  0.0158
_diffrn_reflns_av_sigmaI/netI    0.0235
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            5953
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         4.10
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.292
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             756
_exptl_crystal_size_max          2
_exptl_crystal_size_mid          0.8
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.165
_refine_diff_density_min         -0.143
_refine_diff_density_rms         0.027
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         3197
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0451
_refine_ls_R_factor_gt           0.0386
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0595P)^2^+0.2825P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1035
_refine_ls_wR_factor_ref         0.1101
_reflns_number_gt                2754
_reflns_number_total             3197
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ce06096a.txt
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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      P2(1)/n
_cod_database_code               7207339