Structure and magnetism of the first strictly dinuclear compound containing paramagnetic 3d and 5f metal ions. Major influence of the CuII ion coordination on the exchange CuII–UIV interaction
Salmon, Lionel; Thuéry, Pierre; Rivière, Eric; Girerd, Jean-Jacques; Ephritikhine, Michel; Chemical Communications (Cambridge, United Kingdom)  (2003) 762–763; doi:10.1039/b212635d

data_7104026
_publ_section_title
;
 Structure and magnetism of the first strictly dinuclear compound
 containing paramagnetic 3d and 5f metal ions. Major influence of the CuII
 ion coordination on the exchange CuII--UIV interaction
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   6
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              762
_journal_page_last               763
_journal_paper_doi               10.1039/b212635d
_journal_year                    2003
_chemical_formula_sum            'C61 H57 N9 O8 U Zn2'
_chemical_formula_weight         1412.93
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.1496(19)
_cell_length_b                   14.6344(15)
_cell_length_c                   19.2905(12)
_cell_measurement_reflns_used    33720
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.68
_cell_measurement_theta_min      2.67
_cell_volume                     5688.3(9)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Kappa-CCD software (Nonius B.V., 1998)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1999)'
_computing_publication_material  'SHELXTL (Sheldrick, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.938
_diffrn_measurement_device_type  'Nonius Kappa-CCD'
_diffrn_measurement_method       '\f 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  0.0786
_diffrn_reflns_av_sigmaI/netI    0.0823
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            33720
_diffrn_reflns_theta_full        25.68
_diffrn_reflns_theta_max         25.68
_diffrn_reflns_theta_min         2.67
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  0
_exptl_absorpt_coefficient_mu    3.741
_exptl_absorpt_correction_T_max  0.963
_exptl_absorpt_correction_T_min  0.314
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'program DELABS from PLATON (Spek, 2000)'
_exptl_crystal_colour            'translucent dark orange'
_exptl_crystal_density_diffrn    1.650
_exptl_crystal_density_meas      ?
_exptl_crystal_description       platelet
_exptl_crystal_F_000             2808
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.01
_refine_diff_density_max         1.239
_refine_diff_density_min         -1.511
_refine_diff_density_rms         0.134
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.000(13)
_refine_ls_extinction_coef       0.0054(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.956
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     736
_refine_ls_number_reflns         9915
_refine_ls_number_restraints     273
_refine_ls_restrained_S_all      0.948
_refine_ls_R_factor_all          0.1896
_refine_ls_R_factor_gt           0.0741
_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^)+(0.0515P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1281
_refine_ls_wR_factor_ref         0.1679
_reflns_number_gt                4595
_reflns_number_total             9915
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b212635d.txt
_cod_data_source_block           4.3py
_cod_original_sg_symbol_H-M      Pca2~1~
_cod_database_code               7104026