A delocalized arene-bridged diuranium single-molecule magnet.
Mills, David P.; Moro, Fabrizio; McMaster, Jonathan; van Slageren, Joris; Lewis, William; Blake, Alexander J.; Liddle, Stephen T.; Nature chemistry 3 (2011) 454–460; doi:10.1038/nchem.1028

data_1507931
_publ_section_title
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 A delocalized arene-bridged diuranium single-molecule magnet.
;
_journal_issue                   6
_journal_name_full               'Nature chemistry'
_journal_page_first              454
_journal_page_last               460
_journal_paper_doi               10.1038/nchem.1028
_journal_volume                  3
_journal_year                    2011
_chemical_formula_moiety         'C62 H78 Cl6 N4 P4 Si4 U2, C7 H8'
_chemical_formula_sum            'C69 H86 Cl6 N4 P4 Si4 U2'
_chemical_formula_weight         1896.42
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   'geom, Me from difmap'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                106.254(2)
_cell_angle_beta                 101.926(2)
_cell_angle_gamma                105.292(2)
_cell_formula_units_Z            1
_cell_length_a                   12.3462(16)
_cell_length_b                   13.0526(18)
_cell_length_c                   13.5703(18)
_cell_measurement_reflns_used    5883
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.24
_cell_measurement_theta_min      2.56
_cell_volume                     1930.0(4)
_computing_cell_refinement       'Bruker SAINT version 6.36a (Bruker, 2000)'
_computing_data_collection       'Bruker SMART version 5.625 (Bruker, 2001)'
_computing_data_reduction        'Bruker SAINT; Bruker SHELXTL (Bruker, 2001)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'enCIFer(Allen et al.,2004);PLATON(Spek,2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0550
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            17625
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         1.79
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.584
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6615
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2001)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.632
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             930
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.02
_refine_diff_density_max         3.206
_refine_diff_density_min         -0.916
_refine_diff_density_rms         0.147
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     428
_refine_ls_number_reflns         8690
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0519
_refine_ls_R_factor_gt           0.0369
_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^)+(0.0385P)^2^+1.8493P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0774
_refine_ls_wR_factor_ref         0.0839
_reflns_number_gt                7193
_reflns_number_total             8690
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            nchem.1028-s2.cif
_cod_data_source_block           1
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1507931