Luminescent N,O-chelated chroman-BF2 complexes: structural variants of BODIPY.
Singh, Roop Shikha; Yadav, Mahendra; Gupta, Rakesh Kumar; Pandey, Rampal; Pandey, Daya Shankar; Dalton transactions (Cambridge, England : 2003) 42 (2013) 1696–1707; doi:10.1039/c2dt31820b

data_7022127
_publ_section_title
;
 Luminescent N,O-chelated chroman-BF2 complexes: structural variants of
 BODIPY.
;
_journal_issue                   5
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1696
_journal_page_last               1707
_journal_paper_doi               10.1039/c2dt31820b
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C19 H13 B F2 N2 O2'
_chemical_formula_weight         350.12
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      9
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.368(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.4354(7)
_cell_length_b                   16.4185(9)
_cell_length_c                   7.8451(5)
_cell_measurement_reflns_used    3663
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      32.7399
_cell_measurement_theta_min      3.3138
_cell_volume                     1580.38(16)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 15.9948
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'OXFORD DIFFRACTION XCALIBUR-S'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0298
_diffrn_reflns_av_sigmaI/netI    0.0308
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            5036
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         3.32
_diffrn_source                   'Enhance (Mo) X-ray Source'
_diffrn_standards_decay_%        <3%>
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.9748
_exptl_absorpt_correction_T_min  0.9641
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.7 (release 18-10-2006 CrysAlis171 .NET)
(compiled Oct 18 2006,16:28:17)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.472
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.142
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.7(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         2096
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0346
_refine_ls_R_factor_gt           0.0307
_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^)+(0.0413P)^2^+0.0653P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0677
_refine_ls_wR_factor_ref         0.0688
_reflns_number_gt                1929
_reflns_number_total             2789
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt31820b.txt
_cod_data_source_block           8
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               7022127