Distinct electronic structures and bonding interactions in inverse-sandwich samarium and ytterbium biphenyl complexes.
Xiao, Yuyuan; Zhao, Xiao-Kun; Wu, Tianpin; Miller, Jeffrey T.; Hu, Han-Shi; Li, Jun; Huang, Wenliang; Diaconescu, Paula L.; Chemical science 12 (2020) 227–238; doi:10.1039/d0sc03555f

data_1559987
_publ_section_title
;
 Distinct electronic structures and bonding interactions in
 inverse-sandwich samarium and ytterbium biphenyl complexes.
;
_journal_issue                   1
_journal_name_full               'Chemical science'
_journal_page_first              227
_journal_page_last               238
_journal_paper_doi               10.1039/d0sc03555f
_journal_volume                  12
_journal_year                    2020
_chemical_formula_sum            'C104 H182 Fe2 K2 N4 O18 Si4 Sm2'
_chemical_formula_weight         2379.49
_chemical_name_systematic        Sm2-biph-K2(18C6)2
_chemical_properties_physical
Air-sensitive,Moisture-sensitive,Oxygen-sensitive,Pyrophoric
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2020-06-25 deposited with the CCDC.	2020-10-26 downloaded from the CCDC.
;
_cell_angle_alpha                83.357(2)
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_cell_length_c                   28.2213(7)
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_cell_measurement_temperature    180.00(10)
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_cell_measurement_theta_min      1.9760
_cell_volume                     6041.8(3)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      180.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB AFC12 (RINC): Kappa single'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0256
_diffrn_reflns_av_unetI/netI     0.0314
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       20
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_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            85093
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.485
_diffrn_reflns_theta_min         1.975
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    1.360
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.85010
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.29a (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_description       block
_exptl_crystal_F_000             2496
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.3
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_refine_diff_density_max         0.734
_refine_diff_density_min         -0.510
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1297
_refine_ls_number_reflns         27609
_refine_ls_number_restraints     54
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0313
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0313P)^2^+5.5526P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0748
_refine_ls_wR_factor_ref         0.0795
_reflns_Friedel_coverage         0.000
_reflns_number_gt                22792
_reflns_number_total             27609
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc03555f2.cif
_cod_data_source_block           3_CCDC1
_cod_depositor_comments
'Adding full bibliography for 1559984--1559990.cif.'
_cod_database_code               1559987
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              41353