The Total Synthesis of Chalcitrin.
Yang, Ming; Yin, Fangjie; Fujino, Haruka; Snyder, Scott A.; Journal of the American Chemical Society 141 (2019) 4515–4520; doi:10.1021/jacs.8b12612

data_4128953
_publ_section_title
;
 The Total Synthesis of Chalcitrin.
;
_journal_issue                   11
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4515
_journal_page_last               4520
_journal_paper_doi               10.1021/jacs.8b12612
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C12 H8 Br I O4'
_chemical_formula_sum            'C12 H8 Br I O4'
_chemical_formula_weight         422.99
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2018-03-14
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_cell_angle_alpha                90
_cell_angle_beta                 91.6440(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.0937(4)
_cell_length_b                   11.9771(4)
_cell_length_c                   8.4124(3)
_cell_measurement_reflns_used    9918
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.388
_cell_measurement_theta_min      2.394
_cell_volume                     1218.01(7)
_computing_cell_refinement       'SAINT V.8.35A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX3 v.2015.9-0 (Bruker AXS Inc., 2015)'
_computing_data_reduction        'SAINT V.8.35A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics
;
OLEX2: a complete structure solution, refinement and analysis program 
Dolomanov et al., 2009

Mercury: visualization and analysis of crystal structures
Macrae, et al., 2006

O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann.
J. Appl. Cryst. (2009). 42, 339-341;

C. F. Macrae, P. R. Edgington, P. McCabe, E. Pidcock, G. P. Shields, R. Taylor,
M. Towler and J. van de Streek, J. Appl. Cryst. (2006). 39, 453-457.
;
_computing_publication_material
;
 APEX3 v.2015.5-2 (Bruker AXS Inc., 2015)
 OLEX2 (Dolomanov et al., 2009)
;
_computing_structure_refinement  'XL-2018/3 (Sheldrick, 2015b)'
_computing_structure_solution    'XT 2018/2 (Sheldrick, 2015a)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker PHOTON 100'
_diffrn_detector_area_resol_mean 10.4167
_diffrn_detector_type            CMOS
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.919
_diffrn_measurement_device_type  D8Venture
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0319
_diffrn_reflns_av_unetI/netI     0.0191
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.919
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            35693
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.919
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.722
_diffrn_reflns_theta_min         2.394
_diffrn_source                   'micro-focus X-ray tube'
_diffrn_source_type              'INCOATEC ImuS'
_exptl_absorpt_coefficient_mu    5.912
_exptl_absorpt_correction_T_max  0.7463
_exptl_absorpt_correction_T_min  0.6092
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014/4) was used for absorption correction. 
wR2(int) was 0.0666 before and 0.0438 after correction. 
The Ratio of minimum to maximum transmission is 0.8163. 
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    2.307
_exptl_crystal_description       block
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.603
_refine_diff_density_min         -1.051
_refine_diff_density_rms         0.126
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.091
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         3806
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.091
_refine_ls_R_factor_all          0.0262
_refine_ls_R_factor_gt           0.0208
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0191P)^2^+2.2174P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0466
_refine_ls_wR_factor_ref         0.0480
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3472
_reflns_number_total             3806
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b12612_si_003.cif
_cod_data_source_block           0570_ming
_cod_database_code               4128953
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.356
_shelx_estimated_absorpt_t_min   0.253
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C2(H2), C3(H3), C9(H9)
2.b Secondary CH2 refined with riding coordinates:
 C10(H10A,H10B)
2.c Aromatic/amide H refined with riding coordinates:
 C6(H6), C7(H7), C12(H12)
;
_shelx_res_checksum              93488
_shelx_hkl_checksum              58791
_olex2_submission_special_instructions 'No special instructions were received'