Interfacial Ring-Opening Polymerization of Amino-Acid-Derived N-Thiocarboxyanhydrides Toward Well-Defined Polypeptides
Cao, Jinbao; Siefker, David; Chan, Brandon A.; Yu, Tianyi; Lu, Lu; Saputra, Mirza A.; Fronczek, Frank R.; Xie, Weiwei; Zhang, Donghui; ACS Macro Letters 6 (2017) 836–; doi:10.1021/acsmacrolett.7b00411

data_4516807
_publ_section_title
;
 Interfacial Ring-Opening Polymerization of Amino-Acid-Derived
 N-Thiocarboxyanhydrides Toward Well-Defined Polypeptides
;
_journal_issue                   8
_journal_name_full               'ACS Macro Letters'
_journal_page_first              836
_journal_paper_doi               10.1021/acsmacrolett.7b00411
_journal_volume                  6
_journal_year                    2017
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C15 H18 N2 O4 S'
_chemical_formula_sum            'C15 H18 N2 O4 S'
_chemical_formula_weight         322.37
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_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
_cell_angle_beta                 108.097(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.9376(6)
_cell_length_b                   18.7907(10)
_cell_length_c                   11.1825(9)
_cell_measurement_reflns_used    3090
_cell_measurement_temperature    200.0(5)
_cell_measurement_theta_max      26.373
_cell_measurement_theta_min      2.546
_cell_volume                     1585.4(2)
_computing_cell_refinement
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction
'Denzo and Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
'Direct_methods (SIR, Altomare, et al., 1994)'
_diffrn_ambient_temperature      200.0(5)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device       'Nonius KappaCCD '
_diffrn_measurement_method       '\f and \w scans '
_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  0.080
_diffrn_reflns_av_sigmaI/netI    0.1070
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            9823
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.45
_diffrn_reflns_theta_min         2.70
_exptl_absorpt_coefficient_mu    0.223
_exptl_absorpt_correction_T_max  0.9652
_exptl_absorpt_correction_T_min  0.9120
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo & Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.351
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'needle fragment'
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.166
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 1054 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.12(9)
_refine_ls_extinction_coef       0.0068(13)
_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   1.004
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     410
_refine_ls_number_reflns         5929
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.1511
_refine_ls_R_factor_gt           0.0648
_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^)+(0.0471P)^2^+0.7730P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1143
_refine_ls_wR_factor_ref         0.1452
_reflns_number_gt                3258
_reflns_number_total             5929
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            mz7b00411_si_003.cif
_cod_data_source_block           JCao1
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        1585.40(19)
_cod_original_sg_symbol_Hall     'P 2yb '
_cod_original_sg_symbol_H-M      'P 21          '
_cod_database_code               4516807