Synthesis and structure of two new (guanidinate)boron dichlorides and their attempted conversion to boron(i) derivatives
Findlater, Michael; Hill, Nicholas J.; Cowley, Alan H.; Dalton Transactions  (2008) 4419–4423; doi:10.1039/b800625c

data_7003858
_publ_section_title
;
 Synthesis and structure of two new (guanidinate)boron dichlorides and
 their attempted conversion to boron(i) derivatives
;
_journal_issue                   33
_journal_name_full               'Dalton Transactions'
_journal_page_first              4419
_journal_page_last               4423
_journal_paper_doi               10.1039/b800625c
_journal_year                    2008
_chemical_formula_moiety         'C31 H32 B Cl2 N3'
_chemical_formula_sum            'C31 H32 B Cl2 N3'
_chemical_formula_weight         528.31
_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
_cell_angle_alpha                90
_cell_angle_beta                 104.074(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.925(5)
_cell_length_b                   12.612(5)
_cell_length_c                   16.354(5)
_cell_measurement_reflns_used    13089
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      2.56
_cell_volume                     3386(2)
_computing_cell_refinement       Denzo
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        Scalepack
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0441
_diffrn_reflns_av_sigmaI/netI    0.0803
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            13089
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.56
_exptl_absorpt_coefficient_mu    0.212
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.036
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.378
_refine_diff_density_min         -0.295
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.943
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     340
_refine_ls_number_reflns         7728
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.943
_refine_ls_R_factor_all          0.0975
_refine_ls_R_factor_gt           0.0562
_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^)+(0.0940P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1426
_refine_ls_wR_factor_ref         0.1577
_reflns_number_gt                4479
_reflns_number_total             7728
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b800625c.txt
_cod_data_source_block           mfnh086
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7003858