Polymeric Helical Structures à la Carte by Rational Design of Monomers
Cobos, Katherine; Rodríguez, Rafael; Domarco, Olaya; Fernández, Berta; Quiñoá, Emilio; Riguera, Ricardo; Freire, Félix; Macromolecules 53 (2020) 3182–3193; doi:10.1021/acs.macromol.0c00085

data_1557804
_publ_section_title
;
 Polymeric Helical Structures \`a la Carte by Rational Design of Monomers
;
_journal_issue                   8
_journal_name_full               Macromolecules
_journal_page_first              3182
_journal_page_last               3193
_journal_paper_doi               10.1021/acs.macromol.0c00085
_journal_volume                  53
_journal_year                    2020
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C16 H13 N O2'
_chemical_formula_sum            'C16 H13 N O2'
_chemical_formula_weight         251.27
_chemical_name_common            R-o-MA
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2016-05-04T18:21:14-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 99.117(8)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.191(2)
_cell_length_b                   9.5150(11)
_cell_length_c                   7.2721(10)
_cell_measurement_reflns_used    1872
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      21.93
_cell_measurement_theta_min      2.4
_cell_measurement_wavelength     0.71073
_cell_volume                     1311.1(3)
_computing_cell_refinement       'SAINT V8.37A integration software'
_computing_data_collection       'Bruker APEX2 software'
_computing_data_reduction        'SORTAV (Blessing, 1995)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'APEX-II CCD'
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II'
_diffrn_measurement_method       '\f or \w oscillation scans'
_diffrn_orient_matrix_UB_11      0.035243
_diffrn_orient_matrix_UB_12      -0.078219
_diffrn_orient_matrix_UB_13      0.013265
_diffrn_orient_matrix_UB_21      0.011692
_diffrn_orient_matrix_UB_22      0.019444
_diffrn_orient_matrix_UB_23      0.136548
_diffrn_orient_matrix_UB_31      -0.037501
_diffrn_orient_matrix_UB_32      -0.067447
_diffrn_orient_matrix_UB_33      0.023982
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0589
_diffrn_reflns_av_unetI/netI     0.0924
_diffrn_reflns_Laue_measured_fraction_full 1
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            13501
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_reduction_process
;
        Scaled and merged with Sortav
        R.H. Blessing, (1987) Cryst. Rev. 1, 3-58
        R.H. Blessing, (1989) J. Appl. Cryst. 22, 396-397
;
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.615
_diffrn_reflns_theta_min         2.15
_diffrn_source                   'sealed x-ray tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.96
_exptl_absorpt_correction_T_min  0.876
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.196
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details
;
 Flack x determined using 845 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.7(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.963
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     178
_refine_ls_number_reflns         3979
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.963
_refine_ls_R_factor_all          0.0904
_refine_ls_R_factor_gt           0.0511
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0419P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0882
_refine_ls_wR_factor_ref         0.1038
_reflns_Friedel_coverage         0.868
_reflns_Friedel_fraction_full    1
_reflns_Friedel_fraction_max     0.965
_reflns_number_gt                2673
_reflns_number_total             3979
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ma0c00085_si_005.cif
_cod_data_source_block           shelx
_cod_depositor_comments
;Adding full bibliography for 1557803--1557808.cif.

 Adding full bibliography for 1557803--1557808.cif.
;
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               1557804
_shelx_estimated_absorpt_t_min   0.973
_shelx_estimated_absorpt_t_max   0.992
_shelx_res_checksum              82484
_shelx_hkl_checksum              75816