Molecular Structures and FT-Raman Spectroscopy of Luminescent Niobium and Tantalum Arylimido Compounds
Kurt S. Heinselman; Vincent M. Miskowski; Steven J. Geib; Louis C. Wang; Michael D. Hopkins; Inorganic Chemistry 36 (1997) 5530–5538; doi:10.1021/ic970494+

data_4327706
_publ_section_title
;
 Molecular Structures and FT-Raman Spectroscopy of Luminescent Niobium and
 Tantalum Arylimido Compounds
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5530
_journal_page_last               5538
_journal_paper_doi               10.1021/ic970494+
_journal_volume                  36
_journal_year                    1997
_chemical_formula_sum            'C18 H33 Br3 N3 Ta'
_chemical_formula_weight         712.15
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 91.95(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.111(2)
_cell_length_b                   14.700(3)
_cell_length_c                   15.931(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    208(2)
_cell_measurement_theta_max      15.0
_cell_measurement_theta_min      10.0
_cell_volume                     2366.5(8)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      208(2)
_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  0.0961
_diffrn_reflns_av_sigmaI/netI    0.0776
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            3952
_diffrn_reflns_theta_max         24.00
_diffrn_reflns_theta_min         2.35
_exptl_absorpt_coefficient_mu    9.717
_exptl_absorpt_correction_T_max  0.89
_exptl_absorpt_correction_T_min  0.42
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_density_diffrn    1.999
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.17
_refine_diff_density_max         2.280
_refine_diff_density_min         -1.217
_refine_diff_density_rms         0.172
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.033
_refine_ls_goodness_of_fit_obs   1.093
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         3726
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_restrained_S_obs      1.093
_refine_ls_R_factor_all          0.0908
_refine_ls_R_factor_obs          0.0521
_refine_ls_shift/esd_max         -0.124
_refine_ls_shift/esd_mean        0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0607P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1290
_refine_ls_wR_factor_obs         0.1104
_reflns_number_observed          2562
_reflns_number_total             3726
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ic9704942B_3.cif
_cod_data_source_block           compound6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0607P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0607P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4327706