Synthesis of mono-nitroxides and of bis-nitroxides with varying electronic through-bond communication.
Giannoulis, Angeliki; Ackermann, Katrin; Bogdanov, Alexey; Cordes, David B.; Higgins, Catherine; Ward, Joshua; Slawin, Alexandra M. Z.; Taylor, James E.; Bode, Bela E.; Organic & biomolecular chemistry 21 (2023) 375–385; doi:10.1039/d2ob01863b

data_7159031
_publ_section_title
;
 Synthesis of mono-nitroxides and of bis-nitroxides with varying
 electronic through-bond communication.
;
_journal_issue                   2
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              375
_journal_page_last               385
_journal_paper_doi               10.1039/d2ob01863b
_journal_volume                  21
_journal_year                    2023
_chemical_formula_moiety         'C31 H34 N2 O4'
_chemical_formula_sum            'C31 H34 N2 O4'
_chemical_formula_weight         498.60
_space_group_crystal_system      monoclinic
_space_group_IT_number           12
_space_group_name_Hall           '-C 2y'
_space_group_name_H-M_alt        'C 1 2/m 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2022-10-08
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2022-10-10 deposited with the CCDC.	2022-12-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.203(11)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.690(3)
_cell_length_b                   9.570(4)
_cell_length_c                   21.704(9)
_cell_measurement_reflns_used    517
_cell_measurement_temperature    173
_cell_measurement_theta_max      68.00
_cell_measurement_theta_min      40.80
_cell_volume                     1383.8(10)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b32 (Rigaku, 2015)'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b32'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b32'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL Version 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'Superflip (Palatinus, et al., 2007)'
_diffrn_ambient_temperature      173
_diffrn_detector                 'hybrid photon counting detector'
_diffrn_detector_area_resol_mean 5.814
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.969
_diffrn_measurement_device       'AFC12: Kappa 4 circle'
_diffrn_measurement_device_type  'Rigaku XtaLAB P100K'
_diffrn_measurement_method       \w
_diffrn_measurement_specimen_support Loop
_diffrn_radiation_monochromator  'Rigaku Osmic Confocal Optical System'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0653
_diffrn_reflns_av_unetI/netI     0.0442
_diffrn_reflns_Laue_measured_fraction_full 0.973
_diffrn_reflns_Laue_measured_fraction_max 0.969
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            7060
_diffrn_reflns_point_group_measured_fraction_full 0.973
_diffrn_reflns_point_group_measured_fraction_max 0.969
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         68.138
_diffrn_reflns_theta_min         4.091
_diffrn_source                   'Rotating Anode'
_diffrn_source_current           30.0
_diffrn_source_power             1.2
_diffrn_source_type              'Rigaku MM-007HF'
_diffrn_source_voltage           40.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.632
_exptl_absorpt_correction_T_max  0.994
_exptl_absorpt_correction_T_min  0.735
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.197
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             532
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Chloroform/hexane'
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.659
_refine_diff_density_min         -0.967
_refine_diff_density_rms         0.199
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.978
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     153
_refine_ls_number_reflns         1294
_refine_ls_number_restraints     120
_refine_ls_restrained_S_all      1.972
_refine_ls_R_factor_all          0.1361
_refine_ls_R_factor_gt           0.1316
_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^)+(0.2000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3936
_refine_ls_wR_factor_ref         0.4012
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1155
_reflns_number_total             1294
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ob01863b2.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 7159031--7159038.cif.
;
_cod_original_sg_symbol_H-M      C2/m
_cod_database_code               7159031
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.994
_shelx_estimated_absorpt_t_min   0.928
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 C10-C11 = C11-C12 = C12-C13 = C10A-C11A = C11A-C12A = C12A-C13A = C13A-C14 =
 C14-C15 = C15-C10A
 1.39 with sigma of 0.01
3. Uiso/Uaniso restraints and constraints
C11 \\sim C11A \\sim C15: within 2.5A with sigma of 0.04 and sigma for terminal
atoms of 0.08 within 2.5A
C12 \\sim C12A \\sim C14: within 2.5A with sigma of 0.04 and sigma for terminal
atoms of 0.08 within 2.5A
4. Rigid body (RIGU) restrains
 O8, O9, C3, C8, C10, C11, C12, C13, C8A, C9, C10A, C11A, C12A, C13A
 with sigma for 1-2 distances of 0.004 and sigma for 1-3 distances of 0.004
5. Others
 Fixed Sof: O8(0.25) O9(0.25) C8(0.25) C10(0.25) C11(0.5) H11(0.5) C12(0.5)
 H12(0.5) C13(0.25) C8A(0.25) C9(0.25) C10A(0.25) C11A(0.25) H11A(0.25)
 C12A(0.25) H12A(0.25) C13A(0.25) C14(0.25) H14(0.25) C15(0.25) H15(0.25)
6.a Aromatic/amide H refined with riding coordinates:
 C4(H4), C11(H11), C12(H12), C11A(H11A), C12A(H12A), C14(H14), C15(H15)
6.b Idealised Me refined as rotating group:
 C6(H6A,H6B,H6C), C7(H7A,H7B,H7C)
;
_shelx_res_checksum              62818