Reengineered epipodophyllotoxin
Igor Magedov; Nikolai Evdokimov; Menuka Karki; Amanda Peretti; Dustin Lima; Lilia Frolova; Mary Reisenauer; Anntherese Romero; Paul Tongwa; Alexandr Fonari; Jeff Altig; Snezna Rogelj; Mikhail Antipin; Charles Shuster; Alexander Kornienko; Chem.Commun. 48 (2012) 10416–; doi:10.1039/c2cc35044k

data_7108462
_publ_section_title
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 Reengineered epipodophyllotoxin
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_journal_name_full               Chem.Commun.
_journal_page_first              10416
_journal_paper_doi               10.1039/c2cc35044k
_journal_volume                  48
_journal_year                    2012
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C22 H18 Br2 O2'
_chemical_formula_sum            'C22 H18 Br2 O2'
_chemical_formula_weight         474.18
_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                   7.1515(13)
_cell_length_b                   10.698(2)
_cell_length_c                   24.150(4)
_cell_measurement_reflns_used    9950
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.1864
_cell_measurement_theta_min      2.5430
_cell_volume                     1847.6(6)
_computing_cell_refinement       'SAINT+ ver. 6.2 (Bruker, 2001)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT+ ver. 6.2 (Bruker, 2001)'
_computing_molecular_graphics    'SHELXTL ver. 6.12 (Sheldrick, 2001)'
_computing_publication_material  'SHELXTL ver. 6.12 (Sheldrick, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX II CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0375
_diffrn_reflns_av_sigmaI/netI    0.0272
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            29780
_diffrn_reflns_theta_full        30.64
_diffrn_reflns_theta_max         30.64
_diffrn_reflns_theta_min         2.08
_exptl_absorpt_coefficient_mu    4.401
_exptl_absorpt_correction_T_max  0.6673
_exptl_absorpt_correction_T_min  0.2720
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.705
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.810
_refine_diff_density_min         -0.690
_refine_diff_density_rms         0.065
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.511(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         5723
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0299
_refine_ls_R_factor_gt           0.0245
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0265P)^2^+0.5353P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0540
_refine_ls_wR_factor_ref         0.0558
_reflns_number_gt                5240
_reflns_number_total             5723
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc35044k.txt
_cod_data_source_block           18
_cod_depositor_comments
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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 
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_cod_database_code               7108462