Structures and Photoreactivities of 2,4,6-Triisopropylbenzophenones
Fukushima, S.; Ito, Y.; Hosomi, H.; Ohba, S.; Acta Crystallographica Section B 54 (1998) 895–906; doi:10.1107/S0108768198005515

data_2003043
_publ_section_title
;
 Structures and Photoreactivities of 2,4,6-Triisopropylbenzophenones
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              895
_journal_page_last               906
_journal_paper_doi               10.1107/S0108768198005515
_journal_volume                  54
_journal_year                    1998
_chemical_formula_moiety         'C23 H30 O2'
_chemical_formula_sum            'C23 H30 O2'
_chemical_formula_weight         338.49
_chemical_name_systematic
;
4'-methoxy-2,4,6-triisopropylbenzophenone
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_type_scat_source           'International Tables Vol.IV(1974)'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.000(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.312(2)
_cell_length_b                   12.005(2)
_cell_length_c                   18.804(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    297
_cell_measurement_theta_max      14.6
_cell_measurement_theta_min      12.9
_cell_volume                     2102.1(6)
_computing_cell_refinement
; AFC/MSC Diffractometer Control System
(Rigaku Corporation, 1993)
;
_computing_data_collection       ' AFC/MSC Diffractometer Control System'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    CRYSTAN-GM
_computing_publication_material  CRYSTAN-GM
_computing_structure_refinement  CRYSTAN-GM
_computing_structure_solution
' CRYSTAN-GM (Edwards, Gilmore, Mackay & Stewart, 1996)'
_diffrn_measurement_device_type  'Rigaku AFC-5'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.015
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            3950
_diffrn_reflns_theta_max         25.0
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.070
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.7
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.26
_refine_diff_density_min         -0.18
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_obs   1.21
_refine_ls_hydrogen_treatment    'H atoms riding'
_refine_ls_number_parameters     226
_refine_ls_number_reflns         1911
_refine_ls_R_factor_obs          0.072
_refine_ls_shift/esd_max         0.02
_refine_ls_shift/esd_mean        0.0012
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w=1/[\s ^2^(F) + 0.0009F^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         0.066
_reflns_number_observed          1911
_reflns_number_total             3705
_reflns_threshold_expression     '|F~o~| > 3\s(|F~o~|)'
_cod_data_source_file            oa0012.cif
_cod_data_source_block           VII
_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:

'_atom_site_thermal_displace_type' tag value 'Uij' was replaced with
'Uani' value 25 times.

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

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      'P 21/c        '
_cod_database_code               2003043
_cod_database_fobs_code          2003043