ansa-Chromocene Complexes. 2. Isocyanide Derivatives of Cr(II) and Cr(III), Their Syntheses, X-ray Crystal Structures, and Physical Properties
Shapiro, Pamela J.; Zehnder, Ralph; Foo, David M.; Perrotin, Philippe; Budzelaar, Peter H. M.; Leitch, Sharon; Twamley, Brendan; Organometallics 25 (2006) 719–; doi:10.1021/om050710j

data_4074651
_publ_section_title
;
 ansa-Chromocene Complexes. 2. Isocyanide Derivatives of Cr(II) and
 Cr(III), Their Syntheses, X-ray Crystal Structures, and Physical
 Properties
;
_journal_issue                   3
_journal_name_full               Organometallics
_journal_page_first              719
_journal_paper_doi               10.1021/om050710j
_journal_volume                  25
_journal_year                    2006
_chemical_formula_moiety         'C44 H48 Cr2 Fe N2, C6 H6'
_chemical_formula_sum            'C50 H54 Cr2 Fe N2'
_chemical_formula_weight         842.80
_chemical_name_common            '[(Me4C2Cp2CrCN)2Fec] + C6H6'
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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                69.17(1)
_cell_angle_beta                 68.65(1)
_cell_angle_gamma                71.84(1)
_cell_formula_units_Z            2
_cell_length_a                   12.8945(5)
_cell_length_b                   13.3213(5)
_cell_length_c                   13.4444(5)
_cell_measurement_reflns_used    1305
_cell_measurement_temperature    81(2)
_cell_measurement_theta_max      21.69
_cell_measurement_theta_min      2.65
_cell_volume                     1965.8(2)
_computing_cell_refinement       'Bruker SAINT+ v. 6.22'
_computing_data_collection       'Bruker SMART v. 5.625'
_computing_data_reduction        'Bruker SAINT+ v. 6.22'
_computing_molecular_graphics    'XP, Bruker SHELXTL v. 6.10'
_computing_publication_material  'XCIF, Bruker SHELXTL v. 6.10'
_computing_structure_refinement  'XL, Bruker SHELXTL v. 6.10'
_computing_structure_solution    'XS, Bruker SHELXTL v. 6.10'
_diffrn_ambient_temperature      81(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker/Siemens SMART APEX'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0868
_diffrn_reflns_av_sigmaI/netI    0.1276
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            24182
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.67
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.946
_exptl_absorpt_correction_T_max  0.9631
_exptl_absorpt_correction_T_min  0.8407
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker, 2001'
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.424
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Parallelepiped
_exptl_crystal_F_000             884
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.565
_refine_diff_density_min         -0.523
_refine_diff_density_rms         0.107
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.967
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     504
_refine_ls_number_reflns         9731
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.967
_refine_ls_R_factor_all          0.1093
_refine_ls_R_factor_gt           0.0625
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0406P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1115
_refine_ls_wR_factor_ref         0.1275
_reflns_number_gt                6254
_reflns_number_total             9731
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om050710jsi20050817_120122.cif
_cod_data_source_block           bt387
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4074651