Photoinduced rearrangement of aromatic N-chloroamides to chloroaromatic amides in the solid state: inverted Π(N)-Σ(N) occupational stability of amidyl radicals.
Naumov, Panče; Topcu, Yildiray; Eckert-Maksić, Mirjana; Glasovac, Zoran; Pavošević, Fabijan; Kochunnoonny, Manoj; Hara, Hideyuki; The journal of physical chemistry. A 115 (2011) 7834–7848; doi:10.1021/jp203771c

data_1501728
_publ_section_title
;
 Photoinduced rearrangement of aromatic N-chloroamides to chloroaromatic
 amides in the solid state: inverted \P(N)-\S(N) occupational stability of
 amidyl radicals.
;
_journal_issue                   26
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              7834
_journal_page_last               7848
_journal_paper_doi               10.1021/jp203771c
_journal_volume                  115
_journal_year                    2011
_chemical_formula_moiety         C20H32ClNO
_chemical_formula_sum            'C20 H32 Cl N O'
_chemical_formula_weight         337.92
_chemical_name_common            N-chloro-2,4,6-tris(tert-butyl)acetanilide
_chemical_name_systematic
;
 N-chloro-N-(2,4,6-tris-(tert-butyl)phenylacetamide
;
_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                 91.716(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.1089(7)
_cell_length_b                   9.7134(11)
_cell_length_c                   34.042(4)
_cell_measurement_reflns_used    2348
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.07
_cell_measurement_theta_min      7.31
_cell_volume                     2019.1(4)
_computing_cell_refinement       'APEX2 software (Bruker, 2007)'
_computing_data_collection       'APEX2 software (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2005)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.952
_diffrn_measurement_device_type  'Bruker SMART APEX2 diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multilayer confocal TXS mirror'
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0952
_diffrn_reflns_av_sigmaI/netI    0.0667
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            7545
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         7.10
_exptl_absorpt_coefficient_mu    0.194
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.98
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.112
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.350
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         3396
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0922
_refine_ls_R_factor_gt           0.0726
_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^)+(0.1433P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2025
_refine_ls_wR_factor_ref         0.2179
_reflns_number_gt                2403
_reflns_number_total             3396
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp203771c_si_007.cif
_cod_data_source_block           6a
_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_original_formula_sum        C20H32ClNO
_cod_database_code               1501728