1,4-Bis[(1-methyl-1-phenylethyl)peroxymethyl]benzene
Kuźnik, Nikodem; Zawadiak, Jan; Gilner, Danuta; Wiȩckol, Angelika; Wagner, Paweł; Kubicki, Maciej; Acta Crystallographica Section C 58 (2002) o549–o550; doi:10.1107/S0108270102012945

data_2012912
_publ_section_title
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 1,4-Bis[(1-methyl-1-phenylethyl)peroxymethyl]benzene
;
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o549
_journal_page_last               o550
_journal_paper_doi               10.1107/S0108270102012945
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C26 H30 O4'
_chemical_formula_sum            'C26 H30 O4'
_chemical_formula_weight         406.50
_chemical_name_systematic
;
1,4-Bis[(1-methyl-1-phenylethyl)peroxymethyl]benzene
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 90.44(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.368(3)
_cell_length_b                   6.2200(12)
_cell_length_c                   23.142(5)
_cell_measurement_reflns_used    94
_cell_measurement_temperature    295
_cell_measurement_theta_max      16.72
_cell_measurement_theta_min      3.16
_cell_volume                     2212.1(8)
_computing_cell_refinement       'KM-4 software'
_computing_data_collection       'KM-4 software (Kuma Diffraction, 1991)'
_computing_data_reduction        'KM-4 software'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Kuma KM-4'
_diffrn_measurement_method       \w/2\q
_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  0.012
_diffrn_reflns_av_sigmaI/netI    0.050
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2007
_diffrn_reflns_theta_full        25.06
_diffrn_reflns_theta_max         25.06
_diffrn_reflns_theta_min         2.65
_diffrn_standards_decay_%        0.63
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.221
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.14
_refine_diff_density_min         -0.15
_refine_ls_extinction_coef       0.0123(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     197
_refine_ls_number_reflns         1951
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.098
_refine_ls_R_factor_gt           0.033
_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^)+(0.0551P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.080
_refine_ls_wR_factor_ref         0.092
_reflns_number_gt                1198
_reflns_number_total             1951
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            av1111.cif
_cod_data_source_block           I
_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_enum 1527 2010-12-29 10:47:43Z saulius 

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 

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      'I 2/a'
_cod_database_code               2012912
_cod_database_fobs_code          2012912