Experimental and theoretical evidence for low-lying excited states in [Cr6E8(PEt3)6] (E = S, Se, Te) cluster molecules
Bügel, Patrick; Krummenacher, Ivo; Weigend, Florian; Eichhöfer, Andreas; Dalton Transactions  (2022) –; doi:10.1039/D2DT01690G

data_7711212
_publ_section_title
;
 Experimental and theoretical evidence for low-lying excited states in
 [Cr6E8(PEt3)6] (E = S, Se, Te) cluster molecules
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D2DT01690G
_journal_year                    2022
_chemical_formula_moiety         'C36 H90 Cr6 P6 Se8'
_chemical_formula_sum            'C36 H90 Cr6 P6 Se8'
_chemical_formula_weight         1652.57
_chemical_properties_physical    Air-sensitive,Heat-sensitive
_space_group_crystal_system      trigonal
_space_group_IT_number           148
_space_group_name_Hall           '-R 3'
_space_group_name_H-M_alt        'R -3 :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2021-08-17
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6272)
;
_audit_update_record
;
2022-05-12 deposited with the CCDC.	2022-08-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   17.289(2)
_cell_length_b                   17.289(2)
_cell_length_c                   19.544(4)
_cell_measurement_reflns_used    17083
_cell_measurement_temperature    180
_cell_measurement_theta_max      27.36
_cell_measurement_theta_min      1.71
_cell_volume                     5059.2(13)
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
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_computing_structure_solution    'SHELXT  (Sheldrick, 2015)'
_diffrn_ambient_temperature      180
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS2 Drehanode'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_collimation    '0.5 mm diameter, monocapillary'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_polarisn_norm  0
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0628
_diffrn_reflns_av_unetI/netI     0.0353
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            10660
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.744
_diffrn_reflns_theta_min         2.356
_diffrn_source                   'Bruker rotating anode'
_diffrn_source_current           150
_diffrn_source_power             7.500
_diffrn_source_target            Mo
_diffrn_source_type              'Rotating Anode'
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    5.414
_exptl_absorpt_correction_T_max  0.482
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_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
Koziskova, J.; Hahn, F.; Richter, J.; Kozisek, J. Comparison of different
absorption corrections on the model structure of tetrakis(\m~2~-acetato)-
diaqua-di-copper(II), Acta Chim. Slov., 2016, 9(2), 136-140.
;
_exptl_crystal_colour            black
_exptl_crystal_colour_primary    black
_exptl_crystal_density_diffrn    1.627
_exptl_crystal_description       octahedral
_exptl_crystal_F_000             2436
_exptl_crystal_preparation       'Magnetic properties'
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.589
_refine_diff_density_min         -0.729
_refine_diff_density_rms         0.087
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     88
_refine_ls_number_reflns         2377
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0264
_refine_ls_R_factor_gt           0.0236
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0403P)^2^+0.0976P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0648
_refine_ls_wR_factor_ref         0.0657
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2129
_reflns_number_total             2377
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2dt01690g2.cif
_cod_data_source_block           r-3_CCDC1
_cod_original_cell_volume        5058.9(17)
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               7711212
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.563
_shelx_estimated_absorpt_t_min   0.442
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C3(H3A,H3B), C5(H5A,H5B)
2.b Idealised Me refined as rotating group:
 C2(H2A,H2B,H2C), C4(H4A,H4B,H4C), C6(H6A,H6B,H6C)
;
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_shelx_res_checksum              31790
_shelx_fab_checksum              87648
_olex2_submission_special_instructions 'No special instructions were received'