Thiol−Yne Click Polymerization: Regio- and Stereoselective Synthesis of Sulfur-Rich Acetylenic Polymers with Controllable Chain Conformations and Tunable Optical Properties
Liu, Jianzhao; Lam, Jacky W. Y.; Jim, Cathy K. W.; Ng, Jason C. Y.; Shi, Jianbing; Su, Huimin; Yeung, Kwok Fai; Hong, Yuning; Faisal, Mahtab; Yu, Yong; Wong, Kam Sing; Tang, Ben Zhong; Macromolecules 44 (2011) 68–; doi:10.1021/ma1023473

data_1501777
_publ_section_title
;
 Thiol&#x2212;Yne Click Polymerization: Regio- and Stereoselective
 Synthesis of Sulfur-Rich Acetylenic Polymers with Controllable Chain
 Conformations and Tunable Optical Properties
;
_journal_issue                   1
_journal_name_full               Macromolecules
_journal_page_first              68
_journal_paper_doi               10.1021/ma1023473
_journal_volume                  44
_journal_year                    2011
_chemical_formula_sum            'C18 H16 Si'
_chemical_formula_weight         260.40
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.365(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.613(8)
_cell_length_b                   18.074(12)
_cell_length_c                   6.101(4)
_cell_measurement_reflns_used    263
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.37
_cell_measurement_theta_min      3.56
_cell_volume                     1485.1(16)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.969
_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  0.0456
_diffrn_reflns_av_sigmaI/netI    0.0600
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            8036
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         1.51
_exptl_absorpt_coefficient_mu    0.142
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.165
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bar
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.448
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     174
_refine_ls_number_reflns         3137
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0649
_refine_ls_R_factor_gt           0.0465
_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^)+(0.0500P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1011
_refine_ls_wR_factor_ref         0.1071
_reflns_number_gt                2434
_reflns_number_total             3137
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ma1023473_si_002.cif
_cod_data_source_block           jian8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1501777