Synthesis and Structural Features of Boratabenzene Rare-Earth Metal Alkyl Complexes
Yuan, Yuanyuan; Chen, Yaofeng; Li, Guangyu; Xia, Wei; Organometallics 29 (2010) 3722–; doi:10.1021/om1005116

data_4066548
_publ_section_title
;
 Synthesis and Structural Features of Boratabenzene Rare-Earth Metal Alkyl
 Complexes
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              3722
_journal_paper_doi               10.1021/om1005116
_journal_volume                  29
_journal_year                    2010
_chemical_formula_sum            'C41 H47 B2 Dy N2 Si2'
_chemical_formula_weight         808.11
_chemical_name_systematic
; 
 ? 
;
_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            4
_cell_length_a                   8.6490(3)
_cell_length_b                   17.8750(5)
_cell_length_c                   25.3892(8)
_cell_measurement_temperature    123(2)
_cell_volume                     3925.2(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0264
_diffrn_reflns_av_sigmaI/netI    0.0234
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            45609
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    1.995
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.631756
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.367
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1644
_exptl_crystal_size_max          0.985
_exptl_crystal_size_mid          0.793
_exptl_crystal_size_min          0.541
_refine_diff_density_max         0.772
_refine_diff_density_min         -0.522
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.003(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.128
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     471
_refine_ls_number_reflns         6881
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.131
_refine_ls_R_factor_all          0.0222
_refine_ls_R_factor_gt           0.0216
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0286P)^2^+1.5675P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0544
_refine_ls_wR_factor_ref         0.0547
_reflns_number_gt                6769
_reflns_number_total             6881
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om1005116_si_001.cif
_cod_data_source_block           z
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4066548