4,4-Difluoro-8-methyl-4-bora-3a,4a-diaza-<i>s</i>-indacene
Dong-Chuan Wang; Hong-Ping Wang; Shang Gao; Tong-Yan Zhang; Xiao-Jun Peng; Acta Crystallographica Section E 63 (2007) o2238–o2239; doi:10.1107/S1600536807015243

data_2213339
_publ_section_title
;
 4,4-Difluoro-8-methyl-4-bora-3a,4a-diaza-<i>s</i>-indacene
;
_journal_coeditor_code           HB2349
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2238
_journal_page_last               o2239
_journal_paper_doi               10.1107/S1600536807015243
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C10 H9 B F2 N2'
_chemical_formula_moiety         'C10 H9 B F2 N2'
_chemical_formula_sum            'C10 H9 B F2 N2'
_chemical_formula_weight         206.00
_chemical_melting_point          145.0(10)
_chemical_name_systematic
;
4,4-Difluoro-8-methyl-4-bora-3a,4a-diaza-<i>s</i>-indacene
;
_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
_cell_angle_alpha                102.952(3)
_cell_angle_beta                 93.604(3)
_cell_angle_gamma                92.362(4)
_cell_formula_units_Z            4
_cell_length_a                   7.7156(4)
_cell_length_b                   7.7329(4)
_cell_length_c                   16.6895(8)
_cell_measurement_reflns_used    3372
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      33.72
_cell_measurement_theta_min      2.71
_cell_volume                     966.94(9)
_computing_cell_refinement       'SAINT-Plus (Bruker, 2001)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 12.72
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker SMART APEXII CCD'
_diffrn_measurement_method       \w
_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  0.0180
_diffrn_reflns_av_sigmaI/netI    0.0218
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            7399
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.65
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.953
_exptl_absorpt_correction_T_min  0.936
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1997)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.415
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             424
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.55
_exptl_crystal_size_min          0.44
_refine_diff_density_max         0.256
_refine_diff_density_min         -0.173
_refine_ls_extinction_coef       0.032(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         3372
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0472
_refine_ls_R_factor_gt           0.0385
_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^)+(0.0687P)^2^+0.1545P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1077
_refine_ls_wR_factor_ref         0.1136
_reflns_number_gt                2780
_reflns_number_total             3372
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb2349.cif
_cod_data_source_block           I
_cod_original_cell_volume        966.94(8)
_cod_database_code               2213339
_cod_database_fobs_code          2213339