Synthesis of α-amino acidato derivatives of niobium and tantalum pentahalides and their conversion into iminium salts.
Bortoluzzi, Marco; Hayatifar, Mohammad; Marchetti, Fabio; Pampaloni, Guido; Zacchini, Stefano; Inorganic chemistry 54 (2015) 4047–4055; doi:10.1021/acs.inorgchem.5b00286

data_4346096
_publ_section_title
;
 Synthesis of \a-amino acidato derivatives of niobium and tantalum
 pentahalides and their conversion into iminium salts.
;
_journal_issue                   8
_journal_name_full               'Inorganic chemistry'
_journal_page_first              4047
_journal_page_last               4055
_journal_paper_doi               10.1021/acs.inorgchem.5b00286
_journal_volume                  54
_journal_year                    2015
_chemical_formula_sum            'C10 H14 Cl6 N Nb'
_chemical_formula_weight         453.83
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.3200(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.1372(9)
_cell_length_b                   28.110(3)
_cell_length_c                   16.105(2)
_cell_measurement_reflns_used    9981
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.6255
_cell_measurement_theta_min      2.515
_cell_volume                     3231.0(7)
_computing_cell_refinement       'APEX2 (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT (Bruker AXS, 2004)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1996)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0330
_diffrn_reflns_av_unetI/netI     0.0237
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            31800
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.26
_exptl_absorpt_coefficient_mu    1.719
_exptl_absorpt_correction_T_max  0.7473
_exptl_absorpt_correction_T_min  0.7142
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 Data were corrected for Lorentz polarization and absorption
 effects (empirical absorption correction SADABS).
 R(int) =  0.1242 (selected reflections only, before parameter refinement)
 R(int) =  0.0507 (selected reflections only, after parameter refinement)
;
_exptl_crystal_colour            orange-yellow
_exptl_crystal_density_diffrn    1.866
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1792
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.654
_refine_diff_density_min         -0.630
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     335
_refine_ls_number_reflns         6351
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0284
_refine_ls_R_factor_gt           0.0266
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0272P)^2^+4.6726P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0652
_refine_ls_wR_factor_ref         0.0663
_reflns_number_gt                6056
_reflns_number_total             6351
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic5b00286_si_003.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' 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        3230.9(7)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4346096