Molecular Motion and Conformational Interconversion of Azobenzenes in Crystals as Studied by X-ray Diffraction
Harada, J.; Ogawa, K.; Tomoda, S.; Acta Crystallographica Section B 53 (1997) 662–672; doi:10.1107/S0108768197002772

data_2101887
_publ_section_title
;
 Molecular Motion and Conformational Interconversion of Azobenzenes in
 Crystals as Studied by X-ray Diffraction
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              662
_journal_page_last               672
_journal_paper_doi               10.1107/S0108768197002772
_journal_volume                  53
_journal_year                    1997
_chemical_formula_moiety         'C12 H10 N2'
_chemical_formula_sum            'C12 H10 N2'
_chemical_formula_weight         182.22
_chemical_melting_point          341
_chemical_name_systematic        '       (E)-azobenzene'
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yab'
_space_group_name_H-M_alt        'P 1 21/a 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 112.440(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.1840(11)
_cell_length_b                   5.7888(14)
_cell_length_c                   15.2282(12)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    296
_cell_measurement_theta_max      39.7
_cell_measurement_theta_min      34.5
_cell_volume                     992.7(3)
_computing_cell_refinement       MSC/AFC
_computing_data_collection
;
Rigaku AFC6A, MSC/AFC Diffractometer Control Software
;
_computing_data_reduction
;      DIFDAT_ADDREF_SORTRF (Xtal: Stewart, Merom, Holden, Doherty, Hall
                                   Maslen, Spadaccini & Davenport)
;
_computing_molecular_graphics
'      ORTEP (Xtal: Davenport, Hall & Dreissig)'
_computing_publication_material  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296
_diffrn_measurement_device       Rigaku_AFC6A
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           Cu_K\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  .0208
_diffrn_reflns_av_sigmaI/netI    .0267
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            1463
_diffrn_reflns_theta_max         59.94
_diffrn_reflns_theta_min         3.14
_diffrn_standards_decay_%        5
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    .577
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_description       block
_exptl_crystal_F_000             384
_exptl_crystal_size_max          .40
_exptl_crystal_size_mid          .40
_exptl_crystal_size_min          .40
_refine_diff_density_max         .425
_refine_diff_density_min         -.672
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.185
_refine_ls_goodness_of_fit_obs   1.214
_refine_ls_hydrogen_treatment
;
 Hydrogen atoms were ridden on the bonded carbon atoms.
;
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         1377
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.186
_refine_ls_restrained_S_obs      1.215
_refine_ls_R_factor_all          .1080
_refine_ls_R_factor_obs          .0953
_refine_ls_shift/esd_max         -.046
_refine_ls_shift/esd_mean        .005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1389P)^2^+0.1181P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         .2095
_refine_ls_wR_factor_obs         .1917
_reflns_number_observed          1124
_reflns_number_total             1377
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            oa0007.cif
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1389P)^2^+0.1181P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.1389P)^2^+0.1181P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               2101887