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_7003855
_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         'C25 H34 N2'
_chemical_formula_sum            'C25 H34 N2'
_chemical_formula_weight         362.54
_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                 102.93(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.0454(18)
_cell_length_b                   13.424(3)
_cell_length_c                   18.684(4)
_cell_measurement_reflns_used    4989
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.43
_cell_measurement_theta_min      2.70
_cell_volume                     2211.2(9)
_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 0.991
_diffrn_measured_fraction_theta_max 0.991
_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     0.71073
_diffrn_reflns_av_R_equivalents  0.0592
_diffrn_reflns_av_sigmaI/netI    0.1127
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            8257
_diffrn_reflns_theta_full        27.43
_diffrn_reflns_theta_max         27.43
_diffrn_reflns_theta_min         2.70
_exptl_absorpt_coefficient_mu    0.063
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.089
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.181
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.042
_refine_ls_extinction_coef       0.009(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.934
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         4989
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.934
_refine_ls_R_factor_all          0.1488
_refine_ls_R_factor_gt           0.0566
_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^)+(0.0788P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1250
_refine_ls_wR_factor_ref         0.1615
_reflns_number_gt                2375
_reflns_number_total             4989
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b800625c.txt
_cod_data_source_block           mfnh090
_cod_original_cell_volume        2211.1(9)
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7003855