Synthesis and Size-Dependent Properties of [12], [16], and [24]Carbon Nanobelts.
Povie, Guillaume; Segawa, Yasutomo; Nishihara, Taishi; Miyauchi, Yuhei; Itami, Kenichiro; Journal of the American Chemical Society 140 (2018) 10054–10059; doi:10.1021/jacs.8b06842

data_4132834
_publ_section_title
;
 Synthesis and Size-Dependent Properties of [12], [16], and [24]Carbon
 Nanobelts.
;
_journal_issue                   31
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10054
_journal_page_last               10059
_journal_paper_doi               10.1021/jacs.8b06842
_journal_volume                  140
_journal_year                    2018
_chemical_absolute_configuration unk
_chemical_formula_sum            'C16 H10 Br2'
_chemical_formula_weight         362.06
_space_group_crystal_system      tetragonal
_space_group_IT_number           81
_space_group_name_Hall           'P -4'
_space_group_name_H-M_alt        'P -4'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.425(5)
_cell_length_b                   17.425(5)
_cell_length_c                   4.1752(11)
_cell_measurement_reflns_used    3102
_cell_measurement_temperature    123
_cell_measurement_theta_max      25.3
_cell_measurement_theta_min      3.5
_cell_volume                     1267.7(6)
_computing_cell_refinement
;
Rigaku CrystalClear-SM Expert 2.1 b29
;
_computing_data_collection
;
Rigaku CrystalClear-SM Expert 2.1 b29
;
_computing_data_reduction
;
Rigaku CrystalClear-SM Expert 2.1 b29
;
_computing_molecular_graphics    'Yadokari-XG 2009 (Wakita Nemoto et al., 2009)'
_computing_publication_material  'Yadokari-XG 2009 (Wakita,Nemoto et al., 2009)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    SIRL-97
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 5.8140
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
;
Rigaku CrystalClear-SM Expert 2.1 b29
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1460
_diffrn_reflns_av_unetI/netI     0.0857
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       4
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            13380
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        24.980
_diffrn_reflns_theta_max         24.980
_diffrn_reflns_theta_min         3.508
_diffrn_source                   'Rotating Anode'
_exptl_absorpt_coefficient_mu    6.371
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.458
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'\\\\'Jacobson, R. (1998) Private communication\\\\''
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.897
_exptl_crystal_description       Block
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.010
_refine_diff_density_max         1.488
_refine_diff_density_min         -0.694
_refine_diff_density_rms         0.141
_refine_ls_abs_structure_details
;
 Flack x determined using 614 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.938
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2214
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.938
_refine_ls_R_factor_all          0.0566
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0299P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0913
_refine_ls_wR_factor_ref         0.0946
_reflns_Friedel_coverage         0.735
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                1789
_reflns_number_total             2214
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b06842_si_002.cif
_cod_data_source_block           20
_cod_original_cell_volume        1267.7(8)
_cod_database_code               4132834
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.568
_shelx_estimated_absorpt_t_max   0.939
_shelx_res_checksum              15873
_shelx_hkl_checksum              56930