Maleopimaric acid trimethyl ester
Ying-Ming Pan; Lin Yang; Heng-Shan Wang; Zhi-Cai Zhao; Yong Zhang; Acta Crystallographica Section E 62 (2006) o5701–o5703; doi:10.1107/S1600536806048756

data_2211691
_publ_section_title
;
 Maleopimaric acid trimethyl ester
;
_journal_coeditor_code           YM2017
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o5701
_journal_page_last               o5703
_journal_paper_doi               10.1107/S1600536806048756
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C27 H40 O6'
_chemical_formula_moiety         'C27 H40 O6'
_chemical_formula_sum            'C27 H40 O6'
_chemical_formula_weight         460.59
_chemical_name_systematic
;
Maleopimaric acid trimethyl ester
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 108.804(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9848(15)
_cell_length_b                   23.456(4)
_cell_length_c                   12.364(2)
_cell_measurement_reflns_used    10117
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      25.3
_cell_measurement_theta_min      3.0
_cell_volume                     2466.6(7)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku, 1999)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2000)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2000)'
_computing_publication_material
'SHELXTL (Sheldrick, 2000) and PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.99
_diffrn_measured_fraction_theta_max 0.99
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0262
_diffrn_reflns_av_sigmaI/netI    0.0203
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            24150
_diffrn_reflns_theta_full        25.3
_diffrn_reflns_theta_max         25.3
_diffrn_reflns_theta_min         3.0
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.804
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Jacobson, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.240
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.79
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.41
_refine_diff_density_min         -0.16
_refine_ls_abs_structure_details 'Flack (1983), 4148 Friedel pairs'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.07
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     610
_refine_ls_number_reflns         4615
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.07
_refine_ls_R_factor_all          0.038
_refine_ls_R_factor_gt           0.036
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0442P)^2^+0.5815P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.085
_refine_ls_wR_factor_ref         0.086
_reflns_number_gt                4475
_reflns_number_total             4615
_reflns_threshold_expression     I>2/s(I)
_cod_data_source_file            ym2017.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2211691
_cod_database_fobs_code          2211691