Primary amido substituted diborane4 compounds and imidodiborate4 anions.
Baber, R. Angharad; Charmant, Jonathan P. H.; Cook, Alistair J. R.; Farthing, Natalie E.; Haddow, Mairi F.; Norman, Nicholas C.; Orpen, A. Guy; Russell, Christopher A.; Slattery, John M.; Dalton transactions (Cambridge, England : 2003)  (2005) 3137–3139; doi:10.1039/b509653g

data_7008836
_publ_section_title
;
 Primary amido substituted diborane4 compounds and imidodiborate4
 anions.
;
_journal_issue                   19
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3137
_journal_page_last               3139
_journal_paper_doi               10.1039/b509653g
_journal_year                    2005
_chemical_formula_moiety         'C48 H68 B2 Li4 N4 O6'
_chemical_formula_sum            'C48 H68 B2 Li4 N4 O6'
_chemical_formula_weight         846.44
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                   17.9789(8)
_cell_length_b                   13.8833(6)
_cell_length_c                   19.6293(9)
_cell_measurement_reflns_used    157
_cell_measurement_temperature    173(2)
_cell_volume                     4899.6(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      173(2)
_diffrn_detector_area_resol_mean 8.2
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD Area Detector'
_diffrn_measurement_method       'Frames, each covering 0.3 \% in \w'
_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  0.0607
_diffrn_reflns_av_sigmaI/netI    0.0454
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            30851
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.07
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.840
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.147
_exptl_crystal_density_method    none
_exptl_crystal_description       block
_exptl_crystal_F_000             1816
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.211
_refine_diff_density_min         -0.209
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.983
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     427
_refine_ls_number_reflns         5620
_refine_ls_number_restraints     217
_refine_ls_restrained_S_all      0.983
_refine_ls_R_factor_all          0.0976
_refine_ls_R_factor_gt           0.0521
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0646P)^2^+1.0443P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1184
_refine_ls_wR_factor_ref         0.1411
_reflns_number_gt                3436
_reflns_number_total             5620
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            b509653g.txt
_cod_data_source_block           6
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               7008836