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_2101894
_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         'C14 H14 N2'
_chemical_formula_sum            'C14 H14 N2'
_chemical_formula_weight         210.28
_chemical_melting_point          325
_chemical_name_systematic        '       (E)-3,3'-dimethylazobenzene'
_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'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.824(2)
_cell_length_b                   11.731(2)
_cell_length_c                   7.366(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    200
_cell_measurement_theta_max      39.9
_cell_measurement_theta_min      38.0
_cell_volume                     1194.5(4)
_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    'SIR92     (Giacobazzo,1992)'
_diffrn_ambient_temperature      200
_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  .0000
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_diffrn_reflns_limit_h_min       0
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_diffrn_reflns_limit_k_min       0
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_diffrn_reflns_theta_max         59.82
_diffrn_reflns_theta_min         6.40
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    .540
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.169
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             448
_exptl_crystal_size_max          .30
_exptl_crystal_size_mid          .30
_exptl_crystal_size_min          .25
_refine_diff_density_max         .376
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_refine_ls_restrained_S_obs      1.280
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_refine_ls_R_factor_obs          .0645
_refine_ls_shift/esd_max         -.073
_refine_ls_shift/esd_mean        .005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0930P)^2^+0.2183P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         .1572
_refine_ls_wR_factor_obs         .1509
_reflns_number_observed          634
_reflns_number_total             738
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            oa0007.cif
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_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0930P)^2^+0.2183P] 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^)+(0.0930P)^2^+0.2183P] 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               2101894
_cod_database_fobs_code          2101894