N Heterocyclic Carbene and Cyclic (Alkyl)(Amino)Carbene ligated Half-Sandwich Complexes of Chromium(II) and Chromium(I)
Horrer, Günther; Luff, Martin Simon; Radius, Udo; Dalton Transactions  (2023) –; doi:10.1039/D3DT02123H

data_7713826
_publ_section_title
;
 N Heterocyclic Carbene and Cyclic (Alkyl)(Amino)Carbene ligated
 Half-Sandwich Complexes of Chromium(II) and Chromium(I)
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D3DT02123H
_journal_year                    2023
_chemical_formula_moiety         'C40 H62 Cl4 Cr2 N2'
_chemical_formula_sum            'C40 H62 Cl4 Cr2 N2'
_chemical_formula_weight         816.71
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2023-07-06 deposited with the CCDC.	2023-08-22 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.9570(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   10.41860(10)
_cell_length_b                   9.81210(10)
_cell_length_c                   20.0881(2)
_cell_measurement_reflns_used    13201
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      76.8670
_cell_measurement_theta_min      2.2360
_cell_volume                     2053.29(4)
_computing_cell_refinement       'CrysAlisPro 1.171.40.53 (Rigaku OD, 2019)'
_computing_data_collection       'CrysAlisPro 1.171.40.53 (Rigaku OD, 2019)'
_computing_data_reduction        'CrysAlisPro 1.171.40.53 (Rigaku OD, 2019)'
_computing_molecular_graphics    'ShelXLe (Huebschle et all, 2011)'
_computing_publication_material  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.0000
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0523
_diffrn_reflns_av_unetI/netI     0.0342
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            21657
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        72.000
_diffrn_reflns_theta_max         77.600
_diffrn_reflns_theta_min         4.244
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    6.969
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.236
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.93a (Rigaku Oxford Diffraction, 2020)
Numerical absorption correction based on gaussian integration over
a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear blue'
_exptl_crystal_density_diffrn    1.321
_exptl_crystal_description       block
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.391
_exptl_crystal_size_mid          0.255
_exptl_crystal_size_min          0.169
_refine_diff_density_max         0.765
_refine_diff_density_min         -0.825
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     225
_refine_ls_number_reflns         4304
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0456
_refine_ls_R_factor_gt           0.0432
_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^)+(0.0689P)^2^+2.0349P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1185
_refine_ls_wR_factor_ref         0.1204
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4020
_reflns_number_total             4304
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3dt02123h2.cif
_cod_data_source_block           compound_2
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7713826
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.172
_shelx_estimated_absorpt_t_max   0.384
_shelx_res_checksum              18592