Strong Intermolecular Antiferromagnetic Verdazyl-Verdazyl Coupling in the Solid State
Eusterwiemann, Steffen; Doerenkamp, Carsten; Dresselhaus, Thomas; Janka, Oliver; de Oliveira, Jr, Marcos; Daniliuc, Constantin Gabriel; Eckert, Helmut; Neugebauer, Johannes; Poettgen, Rainer; Studer, Armido; Phys. Chem. Chem. Phys.  (2017) –; doi:10.1039/C7CP02950K

data_7228344
_publ_section_title
;
 Strong Intermolecular Antiferromagnetic Verdazyl-Verdazyl Coupling in the
 Solid State
;
_journal_name_full               'Phys. Chem. Chem. Phys.'
_journal_paper_doi               10.1039/C7CP02950K
_journal_year                    2017
_chemical_formula_sum            'C19 H17 Br2 N4 O Si'
_chemical_formula_weight         505.28
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-03-17 deposited with the CCDC.
2017-05-30 downloaded from the CCDC.
;
_cell_angle_alpha                72.976(3)
_cell_angle_beta                 85.718(3)
_cell_angle_gamma                86.366(4)
_cell_formula_units_Z            2
_cell_length_a                   7.1059(5)
_cell_length_b                   10.9332(8)
_cell_length_c                   13.9604(11)
_cell_measurement_reflns_used    2157
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      4.08
_cell_volume                     1033.19(13)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.945
_diffrn_measured_fraction_theta_max 0.945
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Montel mirror'
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.063
_diffrn_reflns_av_sigmaI/netI    0.0687
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            7790
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         4.07
_exptl_absorpt_coefficient_mu    3.997
_exptl_absorpt_correction_T_max  0.9243
_exptl_absorpt_correction_T_min  0.3521
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.624
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             502
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.836
_refine_diff_density_min         -0.962
_refine_diff_density_rms         0.121
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     247
_refine_ls_number_reflns         3434
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0623
_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^)+(0.0771P)^2^+3.4127P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1571
_refine_ls_wR_factor_ref         0.1699
_reflns_number_gt                2929
_reflns_number_total             3434
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7cp02950k2.cif
_cod_data_source_block           stu8498-100
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7228344