Synthesis of Highly Stereodefined Tetrasubstituted Acyclic All-Carbon Olefins via a Syn-Elimination Approach.
Lim, Ngiap-Kie; Weiss, Patrick; Li, Beryl X.; McCulley, Christina H.; Hare, Stephanie R.; Bensema, Bronwyn L.; Palazzo, Teresa A.; Tantillo, Dean J.; Zhang, Haiming; Gosselin, Francis; Organic letters 19 (2017) 6212–6215; doi:10.1021/acs.orglett.7b03141

data_1547924
_publ_section_title
;
 Synthesis of Highly Stereodefined Tetrasubstituted Acyclic All-Carbon
 Olefins via a Syn-Elimination Approach.
;
_journal_issue                   22
_journal_name_full               'Organic letters'
_journal_page_first              6212
_journal_page_last               6215
_journal_paper_doi               10.1021/acs.orglett.7b03141
_journal_volume                  19
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_sum            'C21 H19 N'
_chemical_formula_weight         285.37
_chemical_name_common            68869-192
_chemical_name_systematic        gene948
_space_group.centring_type       P
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.5127(8)
_cell_length_b                   9.4159(6)
_cell_length_c                   25.6168(17)
_cell_measurement_reflns_used    9880
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      72.46
_cell_measurement_theta_min      3.45
_cell_volume                     3259.3(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ORTEP-32
_computing_publication_material  WinGX
_computing_structure_refinement  SHELXL-2016
_computing_structure_solution    SHELXT-2014
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0595
_diffrn_reflns_av_unetI/netI     0.0619
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_refln_scan_rate          1
_diffrn_refln_scan_width         2.0
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            16610
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        67.000
_diffrn_reflns_theta_max         72.869
_diffrn_reflns_theta_min         3.451
_diffrn_source                   'microfocus rotating anode'
_exptl_absorpt_coefficient_mu    0.509
_exptl_absorpt_correction_T_max  0.754
_exptl_absorpt_correction_T_min  0.648
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_description       block
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.330
_exptl_crystal_size_mid          0.290
_exptl_crystal_size_min          0.260
_refine_diff_density_max         0.230
_refine_diff_density_min         -0.204
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details
; 
 Refined as an inversion twin. 
;
_refine_ls_abs_structure_Flack   1.0(12)
_refine_ls_extinction_coef       0.0040(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     401
_refine_ls_number_reflns         4572
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0520
_refine_ls_R_factor_gt           0.0483
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0841P)^2^+0.6688P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1322
_refine_ls_wR_factor_ref         0.1363
_reflns_Friedel_coverage         0.954
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.991
_reflns_number_gt                4234
_reflns_number_total             4572
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol7b03141_si_031.cif
_cod_data_source_block           68869-192
_cod_depositor_comments
;
The following automatic conversions were performed:

'_space_group.centring_type' value 'primitive' was replaced with the
value 'P' as specified in the replacement file
'/home/antanas/src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5642 2017-10-24 12:04:52Z antanas 

 Adding full bibliography for 1547906--1547941.cif.
;
_cod_database_code               1547924
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.850
_shelx_estimated_absorpt_t_max   0.879
_shelx_res_checksum              87288
_shelx_hkl_checksum              48619