Through-Space Shielding Effects of Metal-Complexed Phenyl Rings.
Miles, William H.; Robinson, Michael J.; Lessard, Samantha G.; Thamattoor, Dasan M.; The Journal of organic chemistry 81 (2016) 10791–10801; doi:10.1021/acs.joc.6b01858

data_4037261
_publ_section_title
;
 Through-Space Shielding Effects of Metal-Complexed Phenyl Rings.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              10791
_journal_page_last               10801
_journal_paper_doi               10.1021/acs.joc.6b01858
_journal_volume                  81
_journal_year                    2016
_chemical_formula_moiety         'C21 H16 Cr O4'
_chemical_formula_sum            'C21 H16 Cr O4'
_chemical_formula_weight         384.34
_chemical_name_common            BillMilesOMe
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 100.0500(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.5083(10)
_cell_length_b                   7.7384(6)
_cell_length_c                   16.8191(13)
_cell_measurement_reflns_used    8186
_cell_measurement_temperature    173.(2)
_cell_measurement_theta_max      26.3537
_cell_measurement_theta_min      2.6321
_cell_volume                     1731.2(2)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173.(2)
_diffrn_detector_area_resol_mean 8.3660
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0170
_diffrn_reflns_av_unetI/netI     0.0144
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14061
_diffrn_reflns_theta_full        26.39
_diffrn_reflns_theta_max         26.39
_diffrn_reflns_theta_min         1.53
_exptl_absorpt_coefficient_mu    0.684
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.78
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/4 (Bruker AXS Inc.)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.475
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.460
_exptl_crystal_size_mid          0.330
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.331
_refine_diff_density_min         -0.183
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         3541
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0354
_refine_ls_R_factor_gt           0.0331
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0634P)^2^+0.5865P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0948
_refine_ls_wR_factor_ref         0.0972
_reflns_number_gt                3272
_reflns_number_total             3541
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo6b01858_si_002.cif
_cod_data_source_block           1c-Cr
_cod_database_code               4037261