Substituent Effect in 2-Benzoylmethylenequinoline Difluoroborates Exhibiting Through-Space Couplings. Multinuclear Magnetic Resonance, X-ray Diffraction, and Computational Study.
Zakrzewska, Anna; Kolehmainen, Erkki; Valkonen, Arto; Haapaniemi, Esa; Rissanen, Kari; Chęcińska, Lilianna; Ośmiałowski, Borys; The journal of physical chemistry. A 117 (2013) 252–256; doi:10.1021/jp311072q

data_1508829
_publ_section_title
;
 Substituent Effect in 2-Benzoylmethylenequinoline Difluoroborates
 Exhibiting Through-Space Couplings. Multinuclear Magnetic Resonance,
 X-ray Diffraction, and Computational Study.
;
_journal_issue                   1
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              252
_journal_page_last               256
_journal_paper_doi               10.1021/jp311072q
_journal_volume                  117
_journal_year                    2013
_chemical_formula_moiety         'C18 H14 B F2 N O'
_chemical_formula_sum            'C18 H14 B F2 N O'
_chemical_formula_weight         309.11
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 100.811(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.11190(10)
_cell_length_b                   14.2344(4)
_cell_length_c                   14.2595(4)
_cell_measurement_reflns_used    4236
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      74.8912
_cell_measurement_theta_min      3.1020
_cell_volume                     1417.92(6)
_computing_cell_refinement       'CrysAlisPro (Agilent Technologies, 2012)'
_computing_data_collection       'CrysAlisPro (Agilent Technologies, 2012)'
_computing_data_reduction        'CrysAlisPro (Agilent Technologies, 2012)'
_computing_molecular_graphics
'ORTEP-3 (Farrugia, 1997); MERCURY (Macrae, <i>et al.</i>, 2008)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR-2004 (Burla, et al., 2005)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 10.3953
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0307
_diffrn_reflns_av_sigmaI/netI    0.0253
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            8985
_diffrn_reflns_theta_full        69.98
_diffrn_reflns_theta_max         69.98
_diffrn_reflns_theta_min         4.43
_exptl_absorpt_coefficient_mu    0.886
_exptl_absorpt_correction_T_max  0.9325
_exptl_absorpt_correction_T_min  0.7894
_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_colour            yellow
_exptl_crystal_density_diffrn    1.448
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.895
_refine_diff_density_min         -0.345
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.124
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         2678
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.119
_refine_ls_R_factor_all          0.0663
_refine_ls_R_factor_gt           0.0622
_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^)+(0.0640P)^2^+1.9029P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1668
_refine_ls_wR_factor_ref         0.1699
_reflns_number_gt                2441
_reflns_number_total             2678
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            jp311072q_si_006.cif
_cod_data_source_block           q3mebf2
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1508829