Lewis acids promoted formal intramolecular [3 + 2] parallel and cross-cycloadditions of cyclopropane 1,1-diesters with allenes.
Wang, Zhenjun; Ren, Jun; Wang, Zhongwen; Organic letters 15 (2013) 5682–5685; doi:10.1021/ol402662j

data_1513117
_publ_section_title
;
 Lewis acids promoted formal intramolecular [3 + 2] parallel and
 cross-cycloadditions of cyclopropane 1,1-diesters with allenes.
;
_journal_issue                   22
_journal_name_full               'Organic letters'
_journal_page_first              5682
_journal_page_last               5685
_journal_paper_doi               10.1021/ol402662j
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C17 H17 Br O4'
_chemical_formula_weight         365.22
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 109.235(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.112(5)
_cell_length_b                   8.925(4)
_cell_length_c                   15.461(7)
_cell_measurement_temperature    113(2)
_cell_volume                     1578.0(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0293
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            18290
_diffrn_reflns_theta_full        27.90
_diffrn_reflns_theta_max         27.90
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    2.620
_exptl_absorpt_correction_T_max  0.7439
_exptl_absorpt_correction_T_min  0.6223
_exptl_crystal_density_diffrn    1.537
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.316
_refine_diff_density_min         -0.585
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         3762
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0298
_refine_ls_R_factor_gt           0.0240
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0384P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0630
_refine_ls_wR_factor_ref         0.0646
_reflns_number_gt                3040
_reflns_number_total             3762
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol402662j_si_001.cif
_cod_data_source_block           E-3l
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        1577.9(12)
_cod_original_sg_symbol_H-M      'P2(1)/n  '
_cod_database_code               1513117