Sterically stabilized cyclopropenonophanes and an electronically stabilized cyclopropenethionophane: syntheses, structural properties, and reactivity.
Werz, Daniel B.; Schuster, Andreea; Gleiter, Rolf; Rominger, Frank; Organic letters 7 (2005) 917–920; doi:10.1021/ol047317e

data_1506445
_publ_section_title
;
 Sterically stabilized cyclopropenonophanes and an electronically
 stabilized cyclopropenethionophane: syntheses, structural properties, and
 reactivity.
;
_journal_issue                   5
_journal_name_full               'Organic letters'
_journal_page_first              917
_journal_page_last               920
_journal_paper_doi               10.1021/ol047317e
_journal_volume                  7
_journal_year                    2005
_chemical_formula_sum            'C24 H40 Br4 O2'
_chemical_formula_weight         680.20
_chemical_name_common            19_in_paper?
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 108.9030(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.5953(6)
_cell_length_b                   11.4554(6)
_cell_length_c                   11.5796(7)
_cell_measurement_temperature    200(2)
_cell_volume                     1329.66(13)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      200(2)
_diffrn_measured_fraction_theta_full 0.932
_diffrn_measured_fraction_theta_max 0.932
_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           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0227
_diffrn_reflns_av_sigmaI/netI    0.0174
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            9712
_diffrn_reflns_theta_full        25.58
_diffrn_reflns_theta_max         25.58
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    6.072
_exptl_absorpt_correction_T_max  0.54
_exptl_absorpt_correction_T_min  0.32
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, Acta Cryst. (1995) A51 33-38.'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.699
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       polyhedron
_exptl_crystal_F_000             680
_exptl_crystal_size_max          .30
_exptl_crystal_size_mid          .20
_exptl_crystal_size_min          .14
_refine_diff_density_max         0.324
_refine_diff_density_min         -0.482
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     216
_refine_ls_number_reflns         2317
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0266
_refine_ls_R_factor_gt           0.0220
_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^)+(0.0248P)^2^+1.1145P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0525
_refine_ls_wR_factor_ref         0.0552
_reflns_number_gt                2093
_reflns_number_total             2317
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol047317esi20050104_032504.cif
_cod_data_source_block           as8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1506445