Simultaneous expansion of 9,10 boron-doped anthracene in longitudinal and lateral directions.
John, Alexandra; Kirschner, Sven; Fengel, Melina K.; Bolte, Michael; Lerner, Hans-Wolfram; Wagner, Matthias; Dalton transactions (Cambridge, England : 2003) 48 (2019) 1871–1877; doi:10.1039/c8dt04820g

data_7048415
_publ_section_title
;
 Simultaneous expansion of 9,10 boron-doped anthracene in longitudinal and
 lateral directions.
;
_journal_issue                   5
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1871
_journal_page_last               1877
_journal_paper_doi               10.1039/c8dt04820g
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C20 H26 Si2'
_chemical_formula_sum            'C20 H26 Si2'
_chemical_formula_weight         322.59
_space_group_crystal_system      orthorhombic
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_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_block_doi                 10.5517/ccdc.csd.cc216r23
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_audit_update_record
;
2018-12-05 deposited with the CCDC.
2018-12-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.1691(3)
_cell_length_b                   12.4660(4)
_cell_length_c                   16.2294(8)
_cell_measurement_reflns_used    41378
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      30.8
_cell_measurement_theta_min      2.1
_cell_volume                     1855.05(12)
_computing_cell_refinement       'X-Area (Stoe & Cie, 2001)'
_computing_data_collection       'X-Area (Stoe & Cie, 2001)'
_computing_data_reduction        'X-Area (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP in SHELXTL-Plus (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'STOE IPDS II two-circle-diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0473
_diffrn_reflns_av_unetI/netI     0.0243
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
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_diffrn_reflns_limit_k_min       -17
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_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            29132
_diffrn_reflns_point_group_measured_fraction_full 0.995
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_diffrn_reflns_theta_full        25.000
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_diffrn_reflns_theta_min         2.060
_exptl_absorpt_coefficient_mu    0.187
_exptl_absorpt_correction_T_max  0.942
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_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'X-Area (Stoe & Cie, 2001)'
_exptl_crystal_colour            colourless
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_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
; 
 Flack x determined using 2294 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   -0.03(3)
_refine_ls_extinction_coef       0.041(5)
_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   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         5529
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0363
_refine_ls_R_factor_gt           0.0353
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0578P)^2^+0.3532P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0965
_refine_ls_wR_factor_ref         0.0975
_reflns_Friedel_coverage         0.773
_reflns_Friedel_fraction_full    0.997
_reflns_Friedel_fraction_max     0.991
_reflns_number_gt                5372
_reflns_number_total             5529
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt04820g2.cif
_cod_data_source_block           wa1940
_cod_depositor_comments
'Adding full bibliography for 7048415--7048428.cif.'
_cod_database_code               7048415
_shelx_estimated_absorpt_t_min   0.936
_shelx_estimated_absorpt_t_max   0.960
_shelxl_version_number           2014-1
_shelx_res_checksum              79156