Diastereoselective intermolecular Pauson-Khand reactions of chiral cyclopropenes.
Pallerla, Mahesh K.; Fox, Joseph M.; Organic letters 7 (2005) 3593–3595; doi:10.1021/ol051456u

data_1506672
_publ_section_title
;
 Diastereoselective intermolecular Pauson-Khand reactions of chiral
 cyclopropenes.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              3593
_journal_page_last               3595
_journal_paper_doi               10.1021/ol051456u
_journal_volume                  7
_journal_year                    2005
_chemical_formula_sum            'C28 H29 N O4'
_chemical_formula_weight         443.52
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 103.149(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.5041(16)
_cell_length_b                   11.865(2)
_cell_length_c                   11.568(2)
_cell_measurement_reflns_used    840
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.83
_cell_measurement_theta_min      3.00
_cell_volume                     1136.6(3)
_computing_cell_refinement       'SHELXTL, Sheldrick (2001)'
_computing_data_collection       'SMART, Bruker (2002)'
_computing_data_reduction        'SHELXTL, Sheldrick (2001)'
_computing_molecular_graphics    'SHELXTL, Sheldrick (2001)'
_computing_publication_material  'SHELXTL, Sheldrick (2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 836.6
_diffrn_measured_fraction_theta_full 0.943
_diffrn_measured_fraction_theta_max 0.943
_diffrn_measurement_device_type  'Bruker AXS APEX diffractometer'
_diffrn_measurement_method       \w
_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  0.0284
_diffrn_reflns_av_sigmaI/netI    0.0404
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12814
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.81
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.9957
_exptl_absorpt_correction_T_min  0.9663
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick (2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.236
_refine_diff_density_min         -0.180
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         5156
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0386
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0489P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0863
_refine_ls_wR_factor_ref         0.0884
_reflns_number_gt                4621
_reflns_number_total             5156
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol051456usi20050622_025343.cif
_cod_data_source_block           joef017
_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_cell_volume        1136.6(4)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1506672