Cation size dependent reactivity of lanthanide trihalides with bulky alkylcyclopentadienyl anions
Marc D. Walter; Dirk Bentz; Frank Weber; Oliver Schmitt; Gotthelf Wolmershäuser; Helmut Sitzmann; New Journal of Chemistry 31 (2007) 305–; doi:10.1039/b603701a

data_7052040
_publ_section_title
;
 Cation size dependent reactivity of lanthanide trihalides with bulky
 alkylcyclopentadienyl anions
;
_journal_issue                   2
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              305
_journal_paper_doi               10.1039/b603701a
_journal_volume                  31
_journal_year                    2007
_chemical_formula_sum            'C23 H45 Ce0.5 Cl N2 Na0.5'
_chemical_formula_weight         466.62
_chemical_name_systematic
;
?
;
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   18.7950(9)
_cell_length_b                   18.7950(9)
_cell_length_c                   29.9286(19)
_cell_measurement_reflns_used    8000
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26
_cell_measurement_theta_min      1.95
_cell_volume                     10572.3(10)
_computing_cell_refinement       'Stoe IPDS V2.63'
_computing_data_collection       'Stoe IPDS V2.63'
_computing_data_reduction        'Stoe IPDS V2.63'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Giacovazzo et al., 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'Stoe IPDS'
_diffrn_measurement_method       Phi-Oscillation
_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  0.1095
_diffrn_reflns_av_sigmaI/netI    0.0483
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            70557
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         2.72
_exptl_absorpt_coefficient_mu    1.002
_exptl_absorpt_correction_T_max  0.69259
_exptl_absorpt_correction_T_min  0.57291
_exptl_absorpt_correction_type   'empirical (MULABS/PLATON 98)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular shaped transparent block'
_exptl_crystal_F_000             3976
_exptl_crystal_size_max          0.59
_exptl_crystal_size_mid          0.47
_exptl_crystal_size_min          0.35
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.284
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.914
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     282
_refine_ls_number_reflns         5027
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      0.917
_refine_ls_R_factor_all          0.0628
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0448P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0715
_refine_ls_wR_factor_ref         0.0798
_reflns_number_gt                3416
_reflns_number_total             5027
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b603701a.txt
_cod_data_source_block           0179
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0448P)^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^)+(0.0448P)^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_original_sg_symbol_H-M      I4(1)/a
_cod_original_formula_sum        'C23 H45 Ce0.50 Cl N2 Na0.50'
_cod_database_code               7052040