Rapid assembly of complex cyclopentanes employing chiral, alpha,beta-unsaturated acylammonium intermediates
Gang Liu; Morgan E. Shirley; Khoi N. Van; Rae Lynn McFarlin; Daniel Romo; Nature Chemistry 5 (2013) 1049–1057; doi:10.1038/nchem.1788

data_1552068
_publ_section_title
;
 Rapid assembly of complex cyclopentanes employing chiral,
 alpha,beta-unsaturated acylammonium intermediates
;
_journal_name_full               'Nature Chemistry'
_journal_page_first              1049
_journal_page_last               1057
_journal_paper_doi               10.1038/nchem.1788
_journal_volume                  5
_journal_year                    2013
_chemical_formula_sum            'C13 H18 O6'
_chemical_formula_weight         270.27
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 90.741(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8942(16)
_cell_length_b                   8.0356(18)
_cell_length_c                   23.889(5)
_cell_measurement_reflns_used    970
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      59.74
_cell_measurement_theta_min      6.66
_cell_volume                     1323.3(5)
_computing_cell_refinement
; 
  CELL-NOW (Sheldrick, 2003) and SAINT (BRUKER-NONIUS, 2003) 
;
_computing_data_collection       'FRAMBO (BRUKER-NONIUS, 2003)'
_computing_data_reduction        'Bruker APEX2'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'BRUKER GADDS D8 Discover'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0490
_diffrn_reflns_av_sigmaI/netI    0.0310
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            15678
_diffrn_reflns_theta_full        59.98
_diffrn_reflns_theta_max         59.98
_diffrn_reflns_theta_min         3.70
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.908
_exptl_absorpt_correction_T_max  0.9560
_exptl_absorpt_correction_T_min  0.9392
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; (Sheldrick, 2006)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.357
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.07
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.618
_refine_diff_density_min         -0.262
_refine_diff_density_rms         0.083
_refine_ls_extinction_coef       0.0086(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     178
_refine_ls_number_reflns         1921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.0901
_refine_ls_R_factor_gt           0.0776
_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^)+(0.1137P)^2^+2.6086P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2129
_refine_ls_wR_factor_ref         0.2188
_reflns_number_gt                1535
_reflns_number_total             1921
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            nchem.1788-s6.cif
_cod_data_source_block           drb
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the built-in table derived from the
CIF Core dictionary named 'cif_core.dic' version 2.4.5 last updated
on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1552068