Synthesis and Structure of Silicon-Bridged Boratabenzene Fluorenyl Rare-Earth Metal Complexes
Wang, Chunhong; Xiang, Li; Leng, Xuebing; Chen, Yaofeng; Organometallics 35 (2016) 1995–; doi:10.1021/acs.organomet.6b00282

data_4088664
_publ_section_title
;
 Synthesis and Structure of Silicon-Bridged Boratabenzene Fluorenyl
 Rare-Earth Metal Complexes
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              1995
_journal_paper_doi               10.1021/acs.organomet.6b00282
_journal_volume                  35
_journal_year                    2016
_chemical_formula_moiety         'C37 H48 B La N2 O Si'
_chemical_formula_sum            'C37 H48 B La N2 O Si'
_chemical_formula_weight         714.58
_space_group_crystal_system      tetragonal
_space_group_IT_number           82
_space_group_name_Hall           'I -4'
_space_group_name_H-M_alt        'I -4'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2016-04-05
_audit_creation_method
;
Olex2 1.2
(compiled 2014.09.19 svn.r3010 for OlexSys, GUI svn.r4874)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   20.555(5)
_cell_length_b                   20.555(5)
_cell_length_c                   16.443(4)
_cell_measurement_reflns_used    7202
_cell_measurement_temperature    140(2)
_cell_measurement_theta_max      24.630
_cell_measurement_theta_min      2.478
_cell_volume                     6947(3)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      140.15
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0703
_diffrn_reflns_av_unetI/netI     0.0691
_diffrn_reflns_Laue_measured_fraction_full 0.983
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            22072
_diffrn_reflns_point_group_measured_fraction_full 0.981
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.080
_diffrn_reflns_theta_min         1.401
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.295
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.4856
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.1162 before and 0.0897 after correction.
The Ratio of minimum to maximum transmission is 0.6513.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.366
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2944
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_platon_squeeze_details
;

;
_refine_diff_density_max         1.706
_refine_diff_density_min         -1.174
_refine_diff_density_rms         0.117
_refine_ls_abs_structure_details
;
 Flack x determined using 1963 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   0.004(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     394
_refine_ls_number_reflns         6166
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0809
_refine_ls_R_factor_gt           0.0551
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0760P)^2^+25.6487P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1375
_refine_ls_wR_factor_ref         0.1606
_reflns_Friedel_coverage         0.921
_reflns_Friedel_fraction_full    0.979
_reflns_Friedel_fraction_max     0.997
_reflns_number_gt                4660
_reflns_number_total             6166
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            om6b00282_si_002.cif
_cod_data_source_block           11
_cod_original_cell_volume        6947(4)
_cod_database_code               4088664
_shelxl_version_number           2013-2
_shelx_estimated_absorpt_t_max   0.800
_shelx_estimated_absorpt_t_min   0.697
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C2(H2), C1(H1), C4(H4)
2.b Secondary CH2 refined with riding coordinates:
 C23(H23A,H23B), C21(H21A,H21B), C25(H25A,H25B), C34(H34A,H34B), C35(H35A,
 H35B), C36(H36A,H36B), C37(H37A,H37B)
2.c Aromatic/amide H refined with riding coordinates:
 C11(H11), C12(H12), C13(H13), C14(H14), C15(H15), C16(H16), C17(H17),
 C18(H18), C5(H5), C27(H27), C28(H28), C29(H29), C30(H30)
2.d Idealised Me refined as rotating group:
 C20(H20A,H20B,H20C), C19(H19A,H19B,H19C), C33(H33A,H33B,H33C), C32(H32A,H32B,
 H32C), C24(H24A,H24B,H24C), C22(H22A,H22B,H22C)
;
_shelx_res_checksum              33180
_shelx_hkl_checksum              4292
_olex2_submission_special_instructions 'No special instructions were received'