Tricoccin R6
Ajees, A. Abdul; Sekar, K.; Parthasarathy, S.; Schenk, H.; Epe, B.; Mondon, A.; Acta Crystallographica Section E 57 (2001) o116–o117; doi:10.1107/S1600536801000733

data_2200118
_publ_section_title
;
 Tricoccin R6
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o116
_journal_page_last               o117
_journal_paper_doi               10.1107/S1600536801000733
_journal_volume                  57
_journal_year                    2001
_chemical_formula_moiety         'C25 H28 O8'
_chemical_formula_sum            'C25 H28 O8'
_chemical_formula_weight         456.47
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.224(2)
_cell_length_b                   15.521(2)
_cell_length_c                   20.4040(10)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      20
_cell_volume                     2287.8(7)
_computing_cell_refinement       'SDP (Frenz, 1978)'
_computing_data_collection       'CAD-4 Software (Enraf-Nonius, 1989)'
_computing_data_reduction        'CAD-4 Software'
_computing_molecular_graphics    'ORTEPIII (Johnson & Burnett, 1998)'
_computing_publication_material  'SHELXL97 and PARST97 (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full .971
_diffrn_measured_fraction_theta_max .971
_diffrn_measurement_device_type  'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54180
_diffrn_reflns_av_R_equivalents  .0000
_diffrn_reflns_av_sigmaI/netI    .0226
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2417
_diffrn_reflns_theta_full        69.93
_diffrn_reflns_theta_max         69.93
_diffrn_reflns_theta_min         3.58
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    .821
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             968
_exptl_crystal_size_max          .25
_exptl_crystal_size_mid          .25
_exptl_crystal_size_min          .20
_refine_diff_density_max         .193
_refine_diff_density_min         -.165
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   .2(2)
_refine_ls_extinction_coef       .0078(4)
_refine_ls_extinction_method     SHELXL07
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     303
_refine_ls_number_reflns         2417
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          .038
_refine_ls_R_factor_gt           .033
_refine_ls_shift/su_max          .001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0539P)^2^+0.3026P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .092
_reflns_number_gt                2171
_reflns_number_total             2417
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cf6030.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 'Orthorhombic' changed to
'orthorhombic' 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_database_code               2200118
_cod_database_fobs_code          2200118