Carbene-derived α-acyl formamidinium cations: organic molecules with readily tunable multiple redox processes.
Deardorff, Cassie L.; Eric Sikma, R.; Rhodes, Christopher P.; Hudnall, Todd W.; Chemical communications (Cambridge, England) 52 (2016) 9024–9027; doi:10.1039/c5cc06322a

data_7124584
_publ_section_title
;
 Carbene-derived \a-acyl formamidinium cations: organic molecules with
 readily tunable multiple redox processes.
;
_journal_issue                   58
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              9024
_journal_page_last               9027
_journal_paper_doi               10.1039/c5cc06322a
_journal_volume                  52
_journal_year                    2016
_chemical_formula_moiety         {(C27H36N2)-(COC6H5)}-CH2Cl3
_chemical_formula_sum            'C35 H43 Cl3 N2 O'
_chemical_formula_weight         614.06
_chemical_name_common            'IPr-COPh-Cl Cation'
_chemical_properties_physical    Hygroscopic
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2014-09-18 deposited with the CCDC.
2015-09-21 downloaded from the CCDC.
;
_cell_angle_alpha                81.869(6)
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_cell_angle_gamma                88.774(6)
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_cell_length_b                   11.8275(19)
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_cell_measurement_temperature    223(2)
_cell_volume                     1729.8(5)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      223(2)
_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_type           MoK\a
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_diffrn_reflns_av_unetI/netI     0.1709
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
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_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
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_diffrn_reflns_number            13521
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        23.999
_diffrn_reflns_theta_max         23.999
_diffrn_reflns_theta_min         3.060
_exptl_absorpt_coefficient_mu    0.293
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_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.179
_exptl_crystal_description       block
_exptl_crystal_F_000             652
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: hexanes and dichloromethane'
_exptl_crystal_size_max          0.11
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_exptl_crystal_size_min          0.06
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_refine_ls_restrained_S_all      1.004
_refine_ls_R_factor_all          0.1924
_refine_ls_R_factor_gt           0.0786
_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^)+(0.0492P)^2^+0.8075P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1302
_refine_ls_wR_factor_ref         0.1685
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2497
_reflns_number_total             5427
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5cc06322a2.cif
_cod_data_source_block           2c
_cod_database_code               7124584
_shelx_shelxl_version_number     2014/7
_exptl_absorpt_special_details   none
_shelx_res_checksum              54992
_shelx_hkl_checksum              43783