Heterobimetallic Complexes Comprised of Nb and Fe: Isolation of a Coordinatively Unsaturated Nb<sup>III</sup>/Fe<sup>0</sup> Bimetallic Complex Featuring a Nb≡Fe Triple Bond.
Culcu, Gursu; Iovan, Diana A.; Krogman, Jeremy P.; Wilding, Matthew J. T.; Bezpalko, Mark W.; Foxman, Bruce M.; Thomas, Christine M.; Journal of the American Chemical Society 139 (2017) 9627–9636; doi:10.1021/jacs.7b04151

data_4131325
_publ_section_title
;
 Heterobimetallic Complexes Comprised of Nb and Fe: Isolation of a
 Coordinatively Unsaturated Nb<sup>III</sup>/Fe<sup>0</sup> Bimetallic
 Complex Featuring a Nb\\tb Fe Triple Bond.
;
_journal_issue                   28
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9627
_journal_page_last               9636
_journal_paper_doi               10.1021/jacs.7b04151
_journal_volume                  139
_journal_year                    2017
_chemical_formula_moiety         'C53.50 H73 Fe1 N4 Nb1 P4'
_chemical_formula_sum            'C53.5 H73 Fe N4 Nb P4'
_chemical_formula_weight         1044.84
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     other
_audit_creation_date             2017-01-22
_audit_creation_method           CRYSTALS_ver_14.61_build_00000
_cell_angle_alpha                90
_cell_angle_beta                 90.867(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   18.6191(9)
_cell_length_b                   13.1806(6)
_cell_length_c                   42.711(2)
_cell_measurement_reflns_used    9872
_cell_measurement_temperature    120
_cell_measurement_theta_max      30
_cell_measurement_theta_min      3
_cell_volume                     10480.5(9)
_computing_cell_refinement       'Apex2 (Bruker AXS, 2006)'
_computing_data_collection       'Apex2 (Bruker AXS, 2006)'
_computing_data_reduction        'Apex2 (Bruker AXS, 2006)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'Superflip (Palatinus & Chapuis, 2007)'
_diffrn_ambient_temperature      120
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Bruker Kappa Apex2'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.077
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       60
_diffrn_reflns_limit_l_min       -60
_diffrn_reflns_number            131022
_diffrn_reflns_theta_full        29.445
_diffrn_reflns_theta_max         30.046
_diffrn_reflns_theta_min         1.200
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.656
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.81
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
; 
 Analytical Absorption (De Meulenaer & Tompa, 1965) 
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.324
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'prism fragment'
_exptl_crystal_F_000             4392.002
_exptl_crystal_size_max          0.330
_exptl_crystal_size_mid          0.330
_exptl_crystal_size_min          0.160
_refine_diff_density_max         1.97
_refine_diff_density_min         -1.40
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9830
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1142
_refine_ls_number_reflns         30544
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0804
_refine_ls_R_factor_gt           0.0396
_refine_ls_shift/su_max          0.0025354
_refine_ls_shift/su_mean         0.0000967
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.04P)^2^ + 9.81P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1086
_refine_ls_wR_factor_gt          0.0875
_refine_ls_wR_factor_ref         0.1086
_reflns_limit_h_max              26
_reflns_limit_h_min              -26
_reflns_limit_k_max              18
_reflns_limit_k_min              0
_reflns_limit_l_max              60
_reflns_limit_l_min              0
_reflns_number_gt                18266
_reflns_number_total             30544
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_r_factor_ref   0.0804
_oxford_refine_ls_scale          0.0354348(16)
_oxford_reflns_number_all        30544
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title 'gc_09_897b_0m in P2(1)/c'
_cod_data_source_file            ja7b04151_si_002.cif
_cod_data_source_block           9
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_atom_sites_solution_primary' value 'Other' was changed to
'other' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        10480.6(9)
_cod_original_sg_symbol_H-M      'P 1 21/n 1 '
_cod_original_formula_sum        'C53.50 H73 Fe1 N4 Nb1 P4'
_cod_database_code               4131325