Isobutene Polymerization Using Chelating Diboranes: Polymerization in Aqueous Suspension and Hydrocarbon Solution
Lewis, Stewart P.; Chai, Jianfang; Collins, Scott; Sciarone, Timo J. J.; Henderson, Lee D.; Fan, Cheng; Parvez, Masood; Piers, Warren E.; Organometallics 28 (2009) 249–; doi:10.1021/om8007629

data_4068377
_publ_section_title
;
 Isobutene Polymerization Using Chelating Diboranes: Polymerization in
 Aqueous Suspension and Hydrocarbon Solution
;
_journal_issue                   1
_journal_name_full               Organometallics
_journal_page_first              249
_journal_paper_doi               10.1021/om8007629
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C33 H12 B2 Cl2 F20 O3'
_chemical_formula_weight         928.95
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 96.72(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.283(7)
_cell_length_b                   14.944(7)
_cell_length_c                   16.460(6)
_cell_measurement_reflns_used    11417
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      3.1
_cell_volume                     3489(3)
_computing_cell_refinement       'HKL DENZO (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction        'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SAPI91 (Fan, 1991)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.960
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       ' \w and \f '
_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  0.0386
_diffrn_reflns_av_sigmaI/netI    0.0519
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            11417
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         3.1
_exptl_absorpt_coefficient_mu    0.331
_exptl_absorpt_correction_T_max  0.9869
_exptl_absorpt_correction_T_min  0.8016
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV: (Blessing, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.768
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1832
_exptl_crystal_size_max          0.70
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.42
_refine_diff_density_min         -0.48
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     563
_refine_ls_number_reflns         5859
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.1034
_refine_ls_R_factor_gt           0.0559
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.072P)^2^+3.27P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1345
_refine_ls_wR_factor_ref         0.1617
_reflns_number_gt                3744
_reflns_number_total             5859
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om8007629_si_006.cif
_cod_data_source_block           Compound_I
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4068377