Atomically precise edge chlorination of nanographenes and its application in graphene nanoribbons
Yuan-Zhi Tan; Bo Yang; Khaled Parvez; Akimitsu Narita; Silvio Osella; David Beljonne; Xinliang Feng; Klaus Mullen; Nature Communications 4 (2013) 2646–; doi:10.1038/ncomms3646

data_1548324
_publ_section_title
;
 Atomically precise edge chlorination of nanographenes and its application
 in graphene nanoribbons
;
_journal_name_full               'Nature Communications'
_journal_page_first              2646
_journal_paper_doi               10.1038/ncomms3646
_journal_volume                  4
_journal_year                    2013
_chemical_formula_moiety         'C48 Cl18'
_chemical_formula_sum            'C48 Cl18'
_chemical_formula_weight         1214.58
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 97.155(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.861(2)
_cell_length_b                   28.435(4)
_cell_length_c                   10.629(3)
_cell_measurement_temperature    173(2)
_cell_volume                     3856.8(14)
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
XL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.960
_diffrn_measured_fraction_theta_max 0.960
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0430
_diffrn_reflns_av_unetI/netI     0.0437
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            9190
_diffrn_reflns_theta_full        64.99
_diffrn_reflns_theta_max         64.99
_diffrn_reflns_theta_min         3.80
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    12.097
_exptl_absorpt_correction_T_max  0.4090
_exptl_absorpt_correction_T_min  0.2641
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    2.092
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             2376
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.09
_refine_diff_density_max         2.751
_refine_diff_density_min         -0.725
_refine_diff_density_rms         0.187
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.143
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         3161
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          0.0988
_refine_ls_R_factor_gt           0.0825
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1717P)^2^+13.0550P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2390
_refine_ls_wR_factor_ref         0.2542
_reflns_number_gt                2510
_reflns_number_total             3161
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            2.cif
_cod_data_source_block           2
_cod_original_cell_volume        3856.7(13)
_cod_database_code               1548324