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_1547915
_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            'C23 H24 O'
_chemical_formula_weight         316.42
_chemical_name_common            60473-81
_chemical_name_systematic        gene578
_space_group.centring_type       P
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_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     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90.887(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.9827(2)
_cell_length_b                   25.0699(7)
_cell_length_c                   11.6168(3)
_cell_measurement_reflns_used    9863
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      68.30
_cell_measurement_theta_min      3.53
_cell_volume                     1742.14(9)
_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-2014
_computing_structure_solution    SHELXT-2014
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.998
_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  0.0568
_diffrn_reflns_av_unetI/netI     0.0428
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_refln_scan_rate          1
_diffrn_refln_scan_width         2.0
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            24646
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         68.363
_diffrn_reflns_theta_min         3.526
_diffrn_source                   'microfocus rotating anode'
_exptl_absorpt_coefficient_mu    0.548
_exptl_absorpt_correction_T_max  0.929
_exptl_absorpt_correction_T_min  0.798
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.206
_exptl_crystal_description       rod
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.080
_exptl_crystal_size_mid          0.060
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.129
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details
; 
 Refined as an inversion twin. 
;
_refine_ls_abs_structure_Flack   0.1(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     440
_refine_ls_number_reflns         6277
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0377
_refine_ls_R_factor_gt           0.0337
_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^)+(0.0392P)^2^+0.1263P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0772
_refine_ls_wR_factor_ref         0.0794
_reflns_Friedel_coverage         0.953
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                5805
_reflns_number_total             6277
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol7b03141_si_014.cif
_cod_data_source_block           60473-81
_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               1547915
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.957
_shelx_estimated_absorpt_t_max   0.984
_shelx_res_checksum              31738
_shelx_hkl_checksum              93833