Low-spin [MII(L)2] and [MIII(L)2]+ (M = Fe and Co) complexes of tridentate azo-containing pyridine/pyrazine amide ligands: structures, properties and redox potential correlations
Sengupta, Arunava; Rajput, Amit; Barman, Suman K.; Mukherjee, Rabi; Dalton Trans.  (2017) –; doi:10.1039/C7DT01577A

data_7043845
_publ_section_title
;
 Low-spin [MII(L)2] and [MIII(L)2]+ (M = Fe and Co) complexes of
 tridentate azo-containing pyridine/pyrazine amide ligands: structures,
 properties and redox potential correlations
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT01577A
_journal_year                    2017
_chemical_formula_moiety         'C36 H26 Co N8 O2'
_chemical_formula_sum            'C36 H26 Co N8 O2'
_chemical_formula_weight         661.58
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2017-07-04
_audit_creation_method
;
Olex2 1.2-alpha
(compiled 2017.05.22 svn.r3414 for OlexSys, GUI svn.r5347)
;
_audit_update_record
;
2017-07-09 deposited with the CCDC.
2017-07-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.100(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.9608(16)
_cell_length_b                   11.8152(14)
_cell_length_c                   19.486(2)
_cell_measurement_reflns_used    1855
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      22.73
_cell_measurement_theta_min      2.33
_cell_volume                     2982.0(6)
_computing_cell_refinement       'SAINT v6.45A (Bruker, 2003)'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'SAINT v6.45A (Bruker, 2003)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0682
_diffrn_reflns_av_unetI/netI     0.0839
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            14950
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.027
_diffrn_reflns_theta_max         25.027
_diffrn_reflns_theta_min         1.856
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.625
_exptl_absorpt_correction_T_max  0.687
_exptl_absorpt_correction_T_min  0.295618
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS v.2.10 (Bruker,2003) was used for absorption correction.
R(int) was 0.0678 before and 0.0430 after correction.
The Ratio of minimum to maximum transmission is 0.2956.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.474
_exptl_crystal_description       block
_exptl_crystal_F_000             1364
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.150
_refine_diff_density_max         1.360
_refine_diff_density_min         -0.626
_refine_diff_density_rms         0.107
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         5238
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0985
_refine_ls_R_factor_gt           0.0620
_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^)+(0.0915P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1500
_refine_ls_wR_factor_ref         0.1722
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3548
_reflns_number_total             5238
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt01577a2.cif
_cod_data_source_block           4junam_a_complex_3
_cod_database_code               7043845
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.911
_shelx_estimated_absorpt_t_min   0.829
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2. Uiso/Uaniso restraints and constraints
Uanis(C1) = Uanis(C2) = Uanis(C3) = Uanis(C4) = Uanis(C5) = Uanis(C19) =
Uanis(C20) = Uanis(C21) = Uanis(C22) = Uanis(C23)
3.a Aromatic/amide H refined with riding coordinates:
 C3(H3), C21(H21), C8(H8), C19(H19), C4(H4), C11(H11), C16(H16), C17(H17),
 C32(H32), C18(H18), C33(H33), C36(H36), C1(H1), C20(H20), C9(H9), C34(H34),
 C10(H10), C29(H29), C15(H15), C26(H26), C14(H14), C35(H35), C2(H2), C27(H27),
 C22(H22), C28(H28)
;
_shelx_res_checksum              75853
_olex2_submission_special_instructions 'No special instructions were received'