External Heavy-Atom Effect via Orbital Interactions Revealed by Single-Crystal X-ray Diffraction.
Sun, Xingxing; Zhang, Baicheng; Li, Xinyang; Trindle, Carl O.; Zhang, Guoqing; The journal of physical chemistry. A 120 (2016) 5791–5797; doi:10.1021/acs.jpca.6b03867

data_1554016
_publ_section_title
;
 External Heavy-Atom Effect via Orbital Interactions Revealed by
 Single-Crystal X-ray Diffraction.
;
_journal_issue                   29
_journal_name_full               'The journal of physical chemistry. A'
_journal_page_first              5791
_journal_page_last               5797
_journal_paper_doi               10.1021/acs.jpca.6b03867
_journal_volume                  120
_journal_year                    2016
_chemical_formula_sum            'C18 H20 Br N'
_chemical_formula_weight         330.26
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.3828(18)
_cell_length_b                   8.1068(7)
_cell_length_c                   24.499(3)
_cell_measurement_reflns_used    1458
_cell_measurement_temperature    290(2)
_cell_measurement_theta_max      28.9873
_cell_measurement_theta_min      2.9855
_cell_volume                     3253.8(6)
_computing_cell_refinement       'CrysAlisPro (Agilent Technologies)'
_computing_data_collection       'CrysAlisPro (Agilent Technologies)'
_computing_data_reduction        'CrysAlisPro (Agilent Technologies)'
_computing_molecular_graphics    'Ortep-3 (L. J. Farrugia, 2001)'
_computing_publication_material  SHELXL-2013
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      290(2)
_diffrn_detector_area_resol_mean 15.9149
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Gemini S Ultra, Agilent Technologies'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0565
_diffrn_reflns_av_unetI/netI     0.0548
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            14208
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.367
_diffrn_reflns_theta_min         2.992
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    2.517
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.66973
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.21 (release 14-08-2012 CrysAlis171 .NET)
(compiled Sep 14 2012,17:21:16)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_description       block
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.310
_exptl_crystal_size_mid          0.280
_exptl_crystal_size_min          0.270
_refine_diff_density_max         0.349
_refine_diff_density_min         -0.487
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         3319
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.1508
_refine_ls_R_factor_gt           0.0557
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0561P)^2^+0.8498P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1192
_refine_ls_wR_factor_ref         0.1547
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1445
_reflns_number_total             3319
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp6b03867_si_008.cif
_cod_data_source_block           shelxl
_cod_database_code               1554016
_shelx_estimated_absorpt_t_min   0.509
_shelx_estimated_absorpt_t_max   0.550
_shelxl_version_number           2013-4
_shelx_res_checksum              35558
_shelx_hkl_checksum              5177