Highly fluorescent aryl-cyclopentadienyl ligands and their tetra-nuclear mixed metallic potassium–dysprosium clusters
Arumugam, Selvakumar; Reddy, Pulikanti Guruprasad; Francis, Maria; Kulkarni, Aditya; Roy, Sudipta; Mondal, Kartik Chandra; RSC Advances 10 (2020) 39366–39372; doi:10.1039/D0RA05316C

data_7241688
_publ_section_title
;
 Highly fluorescent aryl-cyclopentadienyl ligands and their tetra-nuclear
 mixed metallic potassium--dysprosium clusters
;
_journal_issue                   65
_journal_name_full               'RSC Advances'
_journal_page_first              39366
_journal_page_last               39372
_journal_paper_doi               10.1039/D0RA05316C
_journal_volume                  10
_journal_year                    2020
_chemical_formula_sum            'C26 H24'
_chemical_formula_weight         336.45
_space_group_crystal_system      orthorhombic
_space_group_IT_number           45
_space_group_name_Hall           'I 2 -2c'
_space_group_name_H-M_alt        'I b a 2'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2020-05-29 deposited with the CCDC.	2020-10-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   22.059(2)
_cell_length_b                   22.2927(12)
_cell_length_c                   7.6696(3)
_cell_measurement_reflns_used    5713
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.09
_cell_measurement_theta_min      2.60
_cell_volume                     3771.6(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0280
_diffrn_reflns_av_unetI/netI     0.0260
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            14443
_diffrn_reflns_point_group_measured_fraction_full 0.912
_diffrn_reflns_point_group_measured_fraction_max 0.892
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.245
_diffrn_reflns_theta_min         1.846
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.185
_exptl_crystal_description       Rectangular
_exptl_crystal_F_000             1440
_exptl_crystal_preparation       Luminescent
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Hexane'
_exptl_crystal_size_max          0.280
_exptl_crystal_size_mid          0.220
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
;
 Flack x determined using 1130 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -2.1(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         3393
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0473
_refine_ls_R_factor_gt           0.0386
_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^)+(0.0558P)^2^+1.1470P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0952
_refine_ls_wR_factor_ref         0.1011
_reflns_Friedel_coverage         0.659
_reflns_Friedel_fraction_full    0.810
_reflns_Friedel_fraction_max     0.772
_reflns_number_gt                2980
_reflns_number_total             3393
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ra05316c2.cif
_cod_data_source_block           shelx_CCDC1
_cod_original_cell_volume        3771.5(4)
_cod_database_code               7241688
_shelx_estimated_absorpt_t_min   0.982
_shelx_estimated_absorpt_t_max   0.993
_shelxl_version_number           2014-3
_shelx_res_checksum              22966