Rare-earth metal complexes having an unusual indolyl-1,2-dianion through C–H activation with a novel η1:(μ2–η1:η1) bonding with metals
Zhu, Xiancui; Zhou, Shuangliu; Wang, Shaowu; Wei, Yun; Zhang, Lijun; Wang, Fenhua; Wang, Shaoyin; Feng, Zhijun; Chemical Communications (Cambridge, United Kingdom) 48 (2012) 12020–12022; doi:10.1039/c2cc36045d

data_7108653
_publ_section_title
;
 Rare-earth metal complexes having an unusual indolyl-1,2-dianion through
 C--H activation with a novel \h1:(\m2--\h1:\h1) bonding with metals
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   98
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              12020
_journal_page_last               12022
_journal_paper_doi               10.1039/c2cc36045d
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C38 H70 Li N6 Si4 Y'
_chemical_formula_weight         819.21
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/c 1'
_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                 124.166(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.431(2)
_cell_length_b                   15.176(3)
_cell_length_c                   15.3466(17)
_cell_measurement_temperature    293(2)
_cell_volume                     2395.5(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.1383
_diffrn_reflns_av_sigmaI/netI    0.1691
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            20090
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    1.348
_exptl_absorpt_correction_T_max  0.7650
_exptl_absorpt_correction_T_min  0.7041
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.136
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             876
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.413
_refine_diff_density_min         -0.371
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.121
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     240
_refine_ls_number_reflns         5483
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.173
_refine_ls_R_factor_all          0.1974
_refine_ls_R_factor_gt           0.0620
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0100P)^2^+1.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0870
_refine_ls_wR_factor_ref         0.1067
_reflns_number_gt                2306
_reflns_number_total             5483
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc36045d.txt
_cod_data_source_block           110817a_0m
_cod_original_sg_symbol_H-M      P2/c
_cod_database_code               7108653