4-(3,4-Methylenedioxyphenyl)-7,7-dimethyl-5-oxo-3,4,5,6,7,8-hexahydrocoumarin
Wu, Hui; Shi, Daqing; Chen, Jing; Wang, Xiangshan; Zhuang, Qiya; Hu, Hongwen; Acta Crystallographica Section E 59 (2003) o1265–o1266; doi:10.1107/S1600536803016945

data_2202988
_publ_section_title
4-(3,4-Methylenedioxyphenyl)-7,7-dimethyl-5-oxo-3,4,5,6,7,8-hexahydrocoumarin
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1265
_journal_page_last               o1266
_journal_paper_doi               10.1107/S1600536803016945
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C18 H18 O5'
_chemical_formula_moiety         'C18 H18 O5'
_chemical_formula_sum            'C18 H18 O5'
_chemical_formula_weight         314.32
_chemical_melting_point          .427E-305
_chemical_name_systematic
;
4-(3,4-methylenedioxyphenyl)-7,7-dimethyl-5-oxo-3,4,5,6,7,8-hexahydrocoumarin
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.16(2)
_cell_angle_beta                 103.11(2)
_cell_angle_gamma                109.60(2)
_cell_formula_units_Z            2
_cell_length_a                   6.9630(10)
_cell_length_b                   8.957(2)
_cell_length_c                   13.594(3)
_cell_measurement_reflns_used    28
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      17.00
_cell_measurement_theta_min      3.27
_cell_volume                     775.0(3)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1994)'
_computing_data_reduction        'SHELXTL (Sheldrick, 1997)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    SHELXTL
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0141
_diffrn_reflns_av_sigmaI/netI    0.0280
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3072
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.54
_diffrn_standards_decay_%        5.97
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.347
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.166
_refine_diff_density_min         -0.164
_refine_ls_extinction_coef       0.041(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXTL
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         2731
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0569
_refine_ls_R_factor_gt           0.0382
_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^)+(0.0542P)^2^] where P=  (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0949
_refine_ls_wR_factor_ref         0.1015
_reflns_number_gt                1937
_reflns_number_total             2731
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww6104.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 'Triclinic' changed to 'triclinic'
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_database_code               2202988