Synthesis, Characterization, and Structures of Divalent Europium and Ytterbium N,N-Dimethylaminodiboranates
Scott R. Daly; Gregory S. Girolami; Inorganic Chemistry 49 (2010) 4578–4585; doi:10.1021/ic100292u

data_4315511
_publ_contact_author_address
;Department of Chemistry, Box 4-6
University of Illinois at Urbana-Champaign
600 South Mathews
Urbana, IL 61801
;
_publ_contact_author_email       girolami@scs.illinois.edu
_publ_contact_author_fax         '(217) 333-2685'
_publ_contact_author_name        'Gregory S. Girolami'
_publ_contact_author_phone       '(217) 333-2729'
_publ_section_title
;
 Synthesis, Characterization, and Structures of Divalent Europium and
 Ytterbium N,N-Dimethylaminodiboranates
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4578
_journal_page_last               4585
_journal_paper_doi               10.1021/ic100292u
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C24 H80 B8 Eu2 N4 O4'
_chemical_formula_weight         879.32
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 90.5740(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.2155(2)
_cell_length_b                   20.5596(5)
_cell_length_c                   10.4732(3)
_cell_measurement_reflns_used    5406
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.54
_cell_measurement_theta_min      1.98
_cell_volume                     2199.54(9)
_computing_cell_refinement       'Bruker APEX'
_computing_data_collection       'Bruker APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.959
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'psi and omega 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  0.0723
_diffrn_reflns_av_sigmaI/netI    0.0376
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            30569
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    2.854
_exptl_absorpt_correction_T_max  0.73379
_exptl_absorpt_correction_T_min  0.59415
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   XPREP/SHELXTL
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.328
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             900
_exptl_crystal_size_max          0.210
_exptl_crystal_size_mid          0.190
_exptl_crystal_size_min          0.140
_refine_diff_density_max         0.646
_refine_diff_density_min         -0.473
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.999
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     306
_refine_ls_number_reflns         4865
_refine_ls_number_restraints     34
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0458
_refine_ls_R_factor_gt           0.0285
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0421P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0694
_refine_ls_wR_factor_ref         0.0766
_reflns_number_gt                3648
_reflns_number_total             4865
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic100292u_si_001_1.cif
_cod_data_source_block           fa16y_face
_cod_database_code               4315511