Stabilisation of tetrabromo- and tetrachlorosemiquinone (bromanil and chloranil) anion radicals in crystals
Molčanov, Krešimir; Kojić-Prodić, Biserka; Babić, Darko; Žilić, Dijana; Rakvin, Boris; CrystEngComm 13 (2011) 5170–; doi:10.1039/c1ce05513e

data_7206339
_publ_section_title
;
 Stabilisation of tetrabromo- and tetrachlorosemiquinone (bromanil and
 chloranil) anion radicals in crystals
;
_journal_issue                   16
_journal_name_full               CrystEngComm
_journal_page_first              5170
_journal_paper_doi               10.1039/c1ce05513e
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C6 Br4 Na1 O2'
_chemical_formula_sum            'C6 Br4 Na O2'
_chemical_formula_weight         446.67
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_audit_creation_date             2009-05-11T10:48:22-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 97.712(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.1909(3)
_cell_length_b                   3.6689(3)
_cell_length_c                   15.5125(6)
_cell_measurement_reflns_used    1589
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      75.8036
_cell_measurement_theta_min      2.8658
_cell_volume                     461.96(5)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.4323
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device_type  'Oxford Xcalibur Nova'
_diffrn_measurement_method
;
CCD detector
;
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54179
_diffrn_reflns_av_R_equivalents  0.0433
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2253
_diffrn_reflns_theta_full        75.95
_diffrn_reflns_theta_max         75.95
_diffrn_reflns_theta_min         5.76
_exptl_absorpt_coefficient_mu    21.425
_exptl_absorpt_correction_T_max  0.8036
_exptl_absorpt_correction_T_min  0.0858
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.11 (release 31-10-2007 CrysAlis171 .NET)
(compiled Oct 31 2007,17:16:07)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    3.211
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             406
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.01
_refine_diff_density_max         3.789
_refine_diff_density_min         -2.57
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.092
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     61
_refine_ls_number_reflns         939
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_gt           0.072
_refine_ls_shift/su_max          0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1527P)^2^+29.5980P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.2649
_reflns_number_gt                784
_reflns_number_total             939
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ce05513e.txt
_cod_data_source_block           NaBr4Q
_cod_database_code               7206339