Group 13 decamethylmetallocenium cations
Macdonald, Charles L. B.; Gorden, John D.; Voigt, Andreas; Filipponi, Silvia; Cowley, Alan H.; Dalton Transactions  (2008) 1161–1176; doi:10.1039/b716220k

data_7003454
_publ_section_title
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 Group 13 decamethylmetallocenium cations
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_journal_issue                   9
_journal_name_full               'Dalton Transactions'
_journal_page_first              1161
_journal_page_last               1176
_journal_paper_doi               10.1039/b716220k
_journal_year                    2008
_chemical_formula_moiety         'c21 h33 b'
_chemical_formula_sum            'C21 H33 B'
_chemical_formula_weight         296.28
_chemical_melting_point          329.6(5)
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            8
_cell_length_a                   7.5688(15)
_cell_length_b                   17.863(4)
_cell_length_c                   27.857(6)
_cell_measurement_reflns_used    7702
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.92
_cell_volume                     3766.3(14)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Collect software, Nonius B.V. 1998'
_computing_data_reduction        ScalePack
_computing_molecular_graphics    'SHELXTL-Plus, XP, Siemens, 1994'
_computing_publication_material  'SHELXTL-Plus, XCIF, Siemens, 1994'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.963
_diffrn_measurement_device_type  'Nonius KAPPA-CCD'
_diffrn_measurement_method       '\w 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  0.0599
_diffrn_reflns_av_sigmaI/netI    0.0943
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            7702
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.92
_exptl_absorpt_coefficient_mu    0.057
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.045
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.176
_refine_diff_density_min         -0.255
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -10(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     419
_refine_ls_number_reflns         4672
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.1297
_refine_ls_R_factor_gt           0.0650
_refine_ls_shift/su_max          0.403
_refine_ls_shift/su_mean         0.009
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0823P)^2^+0.6240P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1398
_refine_ls_wR_factor_ref         0.1691
_reflns_number_gt                2804
_reflns_number_total             4672
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b716220k.txt
_cod_data_source_block           8
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value '56-57C' was changed to '329.6(5)' -
it was converted from degrees Celsius(C) to Kelvins(K), the average
value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
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_cod_original_cell_volume        3766.4(13)
_cod_original_sg_symbol_H-M      p2(1)2(1)2(1)
_cod_database_code               7003454