Nitroxide-nitroxide and nitroxide-metal distance measurements in transition metal complexes with two or three paramagnetic centres give access to thermodynamic and kinetic stabilities.
Giannoulis, A.; Ackermann, K.; Spindler, P. E.; Higgins, C.; Cordes, D. B.; Slawin, A. M. Z.; Prisner, T. F.; Bode, B. E.; Physical chemistry chemical physics : PCCP 20 (2018) 11196–11205; doi:10.1039/c8cp01611a

data_7230391
_publ_section_title
;
 Nitroxide-nitroxide and nitroxide-metal distance measurements in
 transition metal complexes with two or three paramagnetic centres give
 access to thermodynamic and kinetic stabilities.
;
_journal_issue                   16
_journal_name_full               'Physical chemistry chemical physics : PCCP'
_journal_page_first              11196
_journal_page_last               11205
_journal_paper_doi               10.1039/c8cp01611a
_journal_volume                  20
_journal_year                    2018
_chemical_formula_moiety         'C38 H31 N4 O3, 2(C H2 Cl2)'
_chemical_formula_sum            'C40 H35 Cl4 N4 O3'
_chemical_formula_weight         761.55
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-I 2ya'
_space_group_name_H-M_alt        'I 1 2/a 1'
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2015-04-13
_audit_creation_method           'by CrystalStructure 4.1'
_audit_update_record
;
2016-08-04 deposited with the CCDC.
2018-03-29 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 91.149(6)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            8
_cell_length_a                   16.901(3)
_cell_length_b                   9.2057(13)
_cell_length_c                   47.963(8)
_cell_measurement_reflns_used    7018
_cell_measurement_temperature    173
_cell_measurement_theta_max      25.40
_cell_measurement_theta_min      1.70
_cell_volume                     7461(2)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b32'
_computing_data_collection
'CrystalClear-SM Expert 2.1 b32 (Rigaku, 2014)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b32'
_computing_molecular_graphics    'CrystalStructure 4.1'
_computing_publication_material  'CrystalStructure 4.1 (Rigaku, 2014)'
_computing_structure_refinement  'SHELXL2013 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2011 (Burla, et al., 2012)'
_diffrn_ambient_temperature      173
_diffrn_detector_area_resol_mean 11.628
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1102
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       57
_diffrn_reflns_limit_l_min       -57
_diffrn_reflns_number            58867
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.381
_diffrn_reflns_theta_min         1.699
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.361
_exptl_absorpt_correction_T_max  0.951
_exptl_absorpt_correction_T_min  0.569
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3160.00
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Dichloromethane/hexane'
_exptl_crystal_size_max          0.240
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.140
_refine_diff_density_max         1.21
_refine_diff_density_min         -0.88
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.137
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     481
_refine_ls_number_reflns         6853
_refine_ls_number_restraints     6
_refine_ls_R_factor_all          0.1332
_refine_ls_R_factor_gt           0.1008
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.2000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2810
_refine_ls_wR_factor_ref         0.3125
_reflns_number_gt                4270
_reflns_number_total             6853
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c8cp01611a2.cif
_cod_data_source_block           1
_cod_depositor_comments
'Adding full bibliography for 7230391--7230392.cif.'
_cod_database_code               7230391
_shelx_res_checksum              89389