Theory-guided discovery of unique chemical transformations of cyclopropenes.
Weatherhead-Kloster, Robin A; Corey, E. J.; Organic letters 8 (2006) 171–174; doi:10.1021/ol052752+

data_1516761
_publ_section_title
;
 Theory-guided discovery of unique chemical transformations of
 cyclopropenes.
;
_journal_issue                   1
_journal_name_full               'Organic letters'
_journal_page_first              171
_journal_page_last               174
_journal_paper_doi               10.1021/ol052752+
_journal_volume                  8
_journal_year                    2006
_chemical_formula_sum            'C18 H18 O4 S2'
_chemical_formula_weight         362.44
_space_group_IT_number           14
_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                 102.624(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1655(18)
_cell_length_b                   11.398(2)
_cell_length_c                   15.360(3)
_cell_measurement_temperature    193(2)
_cell_volume                     1736.7(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_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  0.0769
_diffrn_reflns_av_sigmaI/netI    0.0627
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            11036
_diffrn_reflns_theta_full        27.92
_diffrn_reflns_theta_max         27.92
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    0.325
_exptl_crystal_density_diffrn    1.386
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             760
_refine_diff_density_max         1.047
_refine_diff_density_min         -0.453
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.151
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4106
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.151
_refine_ls_R_factor_all          0.1202
_refine_ls_R_factor_gt           0.0979
_refine_ls_shift/su_max          0.045
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0807P)^2^+3.4505P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2205
_refine_ls_wR_factor_ref         0.2343
_reflns_number_gt                3244
_reflns_number_total             4106
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol052752%2Bsi20051114_021753.cif
_cod_data_source_block           rak46
_cod_database_code               1516761