Synthetic and Structural Investigations of Monomeric Dilithium Boraamidinates and Bidentate NBNCN Ligands with Bulky N-Bonded Groups
T. Chivers; C. Fedorchuk; M. Parvez; Inorganic Chemistry 43 (2004) 2643–2653; doi:10.1021/ic0352755

data_4310846
_publ_section_title
;
 Synthetic and Structural Investigations of Monomeric Dilithium
 Boraamidinates and Bidentate NBNCN Ligands with Bulky N-Bonded Groups
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2643
_journal_page_last               2653
_journal_paper_doi               10.1021/ic0352755
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C31 H50 B N3'
_chemical_formula_weight         475.55
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 99.06(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.634(7)
_cell_length_b                   9.724(7)
_cell_length_c                   14.733(13)
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.4
_cell_measurement_theta_min      3.3
_cell_volume                     1504(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics
'Cameron (WinGX v1.64-04), Ortep (SHELXTL-NT v5.1, Bruker)'
_computing_publication_material  'WinGX v1.64-05 (L.J. Farrugia)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.966
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Kappa CCD (Nonius, FR540C)'
_diffrn_measurement_method       'CCD rotation images, thick slices'
_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  0.0486
_diffrn_reflns_av_sigmaI/netI    0.0896
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5614
_diffrn_reflns_theta_full        27.42
_diffrn_reflns_theta_max         27.42
_diffrn_reflns_theta_min         3.31
_diffrn_standards_decay_%        'no decay'
_exptl_absorpt_coefficient_mu    0.060
_exptl_absorpt_correction_T_max  0.9916
_exptl_absorpt_correction_T_min  0.9857
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   'HKL Scalepack (Otwinowski & Minor 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.050
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             524
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.304
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.937
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     327
_refine_ls_number_reflns         3514
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.937
_refine_ls_R_factor_all          0.0918
_refine_ls_R_factor_gt           0.0613
_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^)+(0.1300P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1587
_refine_ls_wR_factor_ref         0.1843
_reflns_number_gt                2542
_reflns_number_total             3514
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0352755si20040218_033734_6.cif
_cod_data_source_block           10a
_cod_database_code               4310846