A synthesis of the carbon skeleton of maoecrystal V.
Krawczuk, Paul J.; Schöne, Niklas; Baran, Phil S.; Organic letters 11 (2009) 4774–4776; doi:10.1021/ol901963v

data_1504214
_publ_section_title
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 A synthesis of the carbon skeleton of maoecrystal V.
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_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              4774
_journal_page_last               4776
_journal_paper_doi               10.1021/ol901963v
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C25 H40 O5 Si'
_chemical_formula_weight         448.66
_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'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.5381(9)
_cell_length_b                   13.0869(16)
_cell_length_c                   28.301(3)
_cell_measurement_reflns_used    3553
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      60.94
_cell_measurement_theta_min      3.72
_cell_volume                     2421.5(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0899
_diffrn_reflns_av_sigmaI/netI    0.1007
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            6477
_diffrn_reflns_theta_full        54.99
_diffrn_reflns_theta_max         54.99
_diffrn_reflns_theta_min         5.78
_exptl_absorpt_coefficient_mu    1.117
_exptl_absorpt_correction_T_max  0.966
_exptl_absorpt_correction_T_min  0.923
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.231
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.559
_refine_diff_density_min         -0.319
_refine_diff_density_rms         0.079
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.153
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         2854
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.153
_refine_ls_R_factor_all          0.1147
_refine_ls_R_factor_gt           0.0957
_refine_ls_shift/su_max          0.028
_refine_ls_shift/su_mean         0.005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1200P)^2^+5.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2490
_refine_ls_wR_factor_ref         0.2631
_reflns_number_gt                2311
_reflns_number_total             2854
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol901963v_si_002.cif
_cod_data_source_block           baran114a
_cod_depositor_comments
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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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1504214