A Stable Planar-Chiral N-Heterocyclic Carbene with a 1,1'-Ferrocenediyl Backbone.
Petrov, Alex R.; Derheim, Anatoli; Oetzel, Jan; Leibold, Michael; Bruhn, Clemens; Scheerer, Stefan; Oßwald, Steffen; Winter, Rainer F.; Siemeling, Ulrich; Inorganic chemistry 54 (2015) 6657–6670; doi:10.1021/acs.inorgchem.5b01064

data_4343391
_publ_section_title
;
 A Stable Planar-Chiral N-Heterocyclic Carbene with a 1,1'-Ferrocenediyl
 Backbone.
;
_journal_issue                   13
_journal_name_full               'Inorganic chemistry'
_journal_page_first              6657
_journal_page_last               6670
_journal_paper_doi               10.1021/acs.inorgchem.5b01064
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C18 H24 Fe N6'
_chemical_formula_weight         380.28
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                93.203(13)
_cell_angle_beta                 100.971(12)
_cell_angle_gamma                105.110(12)
_cell_formula_units_Z            2
_cell_length_a                   6.9683(10)
_cell_length_b                   10.7377(17)
_cell_length_c                   13.687(2)
_cell_measurement_reflns_used    7266
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      25.34
_cell_measurement_theta_min      1.52
_cell_volume                     964.6(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_details      ' 240 frames, detector distance = 136 mm'
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_collimation    '0.5 mm diameter, multiple pinhole'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_polarisn_norm  0
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_sigmaI/netI    0.1078
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8120
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.52
_diffrn_source
'sealed X-ray tube, 12 x 0.4 mm long-fine focus'
_diffrn_source_current           30
_diffrn_source_power             1.50
_diffrn_source_voltage           50
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.794
_exptl_absorpt_correction_T_max  0.9805
_exptl_absorpt_correction_T_min  0.8634
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'X-red ver. 1.31 (Stoe & Cie. 2005)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.309
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.437
_refine_diff_density_min         -0.658
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.828
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     232
_refine_ls_number_reflns         3344
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.828
_refine_ls_R_factor_all          0.0990
_refine_ls_R_factor_gt           0.0599
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0558P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1138
_refine_ls_wR_factor_ref         0.1273
_reflns_number_gt                1893
_reflns_number_total             3344
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b01064_si_004.cif
_cod_data_source_block           i1265
_cod_depositor_comments
'Adding full bibliography for 4343389--4343397.cif.'
_cod_database_code               4343391