Effect of Structure on the Spin-Spin Interactions of Tethered Dicyanomethyl Diradicals.
Zhang, Rui; Peterson, Joshua P.; Fischer, Logan J.; Ellern, Arkady; Winter, Arthur H.; Journal of the American Chemical Society 140 (2018) 14308–14313; doi:10.1021/jacs.8b08628

data_4133133
_publ_section_title
;
 Effect of Structure on the Spin-Spin Interactions of Tethered
 Dicyanomethyl Diradicals.
;
_journal_issue                   43
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14308
_journal_page_last               14313
_journal_paper_doi               10.1021/jacs.8b08628
_journal_volume                  140
_journal_year                    2018
_chemical_formula_sum            'C24 H20 N4 O4'
_chemical_formula_weight         428.44
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 101.603(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.1850(3)
_cell_length_b                   19.0335(7)
_cell_length_c                   14.0560(6)
_cell_measurement_reflns_used    3707
_cell_measurement_temperature    173.(2)
_cell_measurement_theta_max      58.9250
_cell_measurement_theta_min      3.9626
_cell_volume                     2145.02(15)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_data_collection       'APEX3 Suite (Bruker AXS Inc. , 2017)'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_molecular_graphics    'shelXle (C.B. Huebschle, rev 833)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'XT, VERSION 2014/5'
_diffrn_ambient_temperature      173.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 VENTURE diffractometer'
_diffrn_measurement_method
'\w and \f scans, narrow frame width, shutterless'
_diffrn_radiation_monochromator  'multilayer mirror'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0698
_diffrn_reflns_av_unetI/netI     0.0391
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            23390
_diffrn_reflns_theta_full        59.00
_diffrn_reflns_theta_max         59.00
_diffrn_reflns_theta_min         3.96
_diffrn_source                   'microfocus sealed tube'
_diffrn_source_type              'sealed tube'
_exptl_absorpt_coefficient_mu    0.761
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.80
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;

SADABS (Spek A. L., 2015) was used fo an rabsorption correction and scalling
of observed data
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.188
_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     291
_refine_ls_number_reflns         3092
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.0585
_refine_ls_R_factor_gt           0.0404
_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^)+(0.0579P)^2^+0.6347P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0986
_refine_ls_wR_factor_ref         0.1099
_reflns_number_gt                2388
_reflns_number_total             3092
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b08628_si_001.cif
_cod_data_source_block           Win011Cu
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_database_code               4133133
_shelx_res_checksum              89510
_shelx_hkl_checksum              67470