Direct observation of arylnitrene formation in the photoreaction of arylazide crystals
Takayama, Terufumi; Mitsumori, Takahiro; Kawano, Masaki; Sekine, Akiko; Uekusa, Hidehiro; Ohashi, Yuji; Sugawara, Tadashi; Acta Crystallographica Section B 66 (2010) 639–646; doi:10.1107/S0108768110036608

data_2104838
_publ_section_title
;
 Direct observation of arylnitrene formation in the photoreaction of
 arylazide crystals
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              639
_journal_page_last               646
_journal_paper_doi               10.1107/S0108768110036608
_journal_volume                  66
_journal_year                    2010
_chemical_formula_moiety         'C8 H8 N4 O'
_chemical_formula_sum            'C8 H8 N4 O'
_chemical_formula_weight         176.18
_chemical_melting_point          ?
_chemical_name_common
;
 4-(acetylamino)phenylazide
;
_chemical_name_systematic
;
 4-(acetylamino)phenylazide
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   difmap
_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            16
_cell_length_a                   7.1342(2)
_cell_length_b                   19.2898(5)
_cell_length_c                   25.4147(6)
_cell_measurement_temperature    80(2)
_cell_volume                     3497.50(16)
_computing_cell_refinement       'Siemens SMART'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SAINT & SADABS'
_computing_molecular_graphics    'ORTEP3 for Window (Farrugia,1998)'
_computing_publication_material  SHELXTL97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      80(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART CCD area detector system'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0485
_diffrn_reflns_av_sigmaI/netI    0.0215
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            52542
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9812
_exptl_absorpt_correction_T_min  0.9720
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Program SADABS was used. '
_exptl_crystal_colour            pale-brown
_exptl_crystal_density_diffrn    1.338
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1472
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.289
_refine_diff_density_min         -0.227
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         5073
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0535
_refine_ls_R_factor_gt           0.0402
_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^)+(0.0607P)^2^+0.7499P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1051
_refine_ls_wR_factor_ref         0.1120
_reflns_number_gt                4051
_reflns_number_total             5073
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            og5042.cif
_cod_data_source_block           5
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               2104838