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_4068373
_publ_section_title
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 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            'C18 H7 B F14 O3'
_chemical_formula_weight         548.05
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                88.83(2)
_cell_angle_beta                 75.85(2)
_cell_angle_gamma                62.85(2)
_cell_formula_units_Z            2
_cell_length_a                   10.067(4)
_cell_length_b                   10.232(4)
_cell_length_c                   10.945(3)
_cell_measurement_reflns_used    8493
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     967.3(6)
_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 0.992
_diffrn_measured_fraction_theta_max 0.992
_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  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0396
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8493
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    0.214
_exptl_absorpt_correction_T_max  0.9789
_exptl_absorpt_correction_T_min  0.9584
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV: (Blessing, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.882
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             540
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.519
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     347
_refine_ls_number_reflns         4422
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0742
_refine_ls_R_factor_gt           0.0475
_refine_ls_shift/su_max          0.029
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0600P)^2^+0.7000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1183
_refine_ls_wR_factor_ref         0.1348
_reflns_number_gt                3135
_reflns_number_total             4422
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om8007629_si_002.cif
_cod_data_source_block           Compound_I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_database_code               4068373