Accessing sodium ferrate complexes containing neutral and anionic N-heterocyclic carbene ligands: structural, synthetic, and magnetic insights.
Maddock, Lewis C. H.; Cadenbach, Thomas; Kennedy, Alan R.; Borilovic, Ivana; Aromí, Guillem; Hevia, Eva; Inorganic chemistry 54 (2015) 9201–9210; doi:10.1021/acs.inorgchem.5b01638

data_4346534
_publ_section_title
;
 Accessing sodium ferrate complexes containing neutral and anionic
 N-heterocyclic carbene ligands: structural, synthetic, and magnetic
 insights.
;
_journal_issue                   18
_journal_name_full               'Inorganic chemistry'
_journal_page_first              9201
_journal_page_last               9210
_journal_paper_doi               10.1021/acs.inorgchem.5b01638
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C16 H47 Fe N2 Na Si5'
_chemical_formula_weight         486.84
_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-2013
_cell_angle_alpha                96.895(4)
_cell_angle_beta                 100.584(4)
_cell_angle_gamma                92.769(4)
_cell_formula_units_Z            2
_cell_length_a                   10.1531(5)
_cell_length_b                   11.8733(5)
_cell_length_c                   12.0556(5)
_cell_measurement_reflns_used    4629
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      28.8909
_cell_measurement_theta_min      3.0135
_cell_volume                     1414.56(11)
_computing_cell_refinement       CrysalisPro
_computing_data_collection       CrysalisPro
_computing_data_reduction        CrysalisPro
_computing_publication_material  SHELXL-2013
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    SHELXS
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur E'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0249
_diffrn_reflns_av_unetI/netI     0.0492
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8652
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.022
_diffrn_reflns_theta_min         3.020
_diffrn_source                   tube
_exptl_absorpt_coefficient_mu    0.765
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.91647
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.40 (release 27-08-2010 CrysAlis171 .NET)
(compiled Aug 27 2010,11:50:40)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.143
_exptl_crystal_description       large_plates
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.386
_refine_diff_density_min         -0.258
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         5523
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0348
_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^)+(0.0331P)^2^+0.4696P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0782
_refine_ls_wR_factor_ref         0.0842
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4612
_reflns_number_total             5523
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic5b01638_si_002.cif
_cod_data_source_block           lewis_42
_cod_database_code               4346534
_shelxl_version_number           2013-3
_shelx_res_checksum              18240
_shelx_hkl_checksum              37135