Crystalline Hybrid Polyphenylene Macromolecules from Octaalkynylsilsesquioxanes, Crystal Structures, and a Potential Route to 3-D Graphenes
Roll, Mark F.; Kampf, Jeffrey W.; Laine, Richard M.; Macromolecules 44 (2011) 3425–; doi:10.1021/ma200081q

data_1501789
_publ_section_title
;
 Crystalline Hybrid Polyphenylene Macromolecules from
 Octaalkynylsilsesquioxanes, Crystal Structures, and a Potential Route to
 3-D Graphenes
;
_journal_issue                   9
_journal_name_full               Macromolecules
_journal_page_first              3425
_journal_paper_doi               10.1021/ma200081q
_journal_volume                  44
_journal_year                    2011
_chemical_formula_moiety         'C336 H232 O12 Si8, 18(C7 H8)'
_chemical_formula_sum            'C462 H376 O12 Si8'
_chemical_formula_weight         6344.35
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                70.874(1)
_cell_angle_beta                 88.818(1)
_cell_angle_gamma                64.954(1)
_cell_formula_units_Z            1
_cell_length_a                   21.6705(18)
_cell_length_b                   22.7273(19)
_cell_length_c                   27.648(2)
_cell_measurement_reflns_used    9619
_cell_measurement_temperature    85(2)
_cell_measurement_theta_max      286.24
_cell_measurement_theta_min      2.39
_cell_volume                     11544.1(16)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART-APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      85(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0521
_diffrn_reflns_av_sigmaI/netI    0.0414
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            350341
_diffrn_reflns_theta_full        27.15
_diffrn_reflns_theta_max         27.15
_diffrn_reflns_theta_min         1.05
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9877
_exptl_absorpt_correction_T_min  0.9743
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  Blessing, R. Acta Cryst. (1995) A51 33-38.
  Sheldrick, G.  SADABS (Version 2008/1) Bruker AXS area
  detector absorption and other corrections, University of
  Gottingen, Germany 2008.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    0.913
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3356
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.478
_refine_diff_density_min         -0.284
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1603
_refine_ls_number_reflns         51117
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0755
_refine_ls_R_factor_gt           0.0566
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1051P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1577
_refine_ls_wR_factor_ref         0.1655
_reflns_number_gt                36764
_reflns_number_total             51117
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ma200081q_si_003.cif
_cod_data_source_block           hpb
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        11544.0(16)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1501789