Multitopic third generation tris(pyrazolyl)methane ligands built on alkyne structural scaffolding: first preparation of mixed tris(pyrazolyl)methane/tris(pyrazolyl)borate ligands
Daniel L. Reger; James R. Gardinier; Selma Bakbak; Radu F. Semeniuc; Uwe H. F. Bunz; Mark D. Smith; New Journal of Chemistry 29 (2005) 1035–; doi:10.1039/b414770g

data_7050052
_publ_section_title
;
 Multitopic third generation tris(pyrazolyl)methane ligands built on
 alkyne structural scaffolding: first preparation of mixed
 tris(pyrazolyl)methane/tris(pyrazolyl)borate ligands
;
_journal_issue                   8
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              1035
_journal_paper_doi               10.1039/b414770g
_journal_volume                  29
_journal_year                    2005
_chemical_absolute_configuration unk
_chemical_formula_sum            'C14 H14 N6 O'
_chemical_formula_weight         282.31
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 97.9170(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.2954(8)
_cell_length_b                   12.4529(8)
_cell_length_c                   8.5445(5)
_cell_measurement_reflns_used    4515
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      25.010
_cell_measurement_theta_min      2.251
_cell_volume                     1401.20(15)
_computing_cell_refinement       'SAINT+ NT V6.02a (Bruker, 1998)'
_computing_data_collection       'SMART NT V5.625 (Bruker, 2000)'
_computing_data_reduction        'SAINT+ NT V6.02a'
_computing_molecular_graphics    'SHELXTL V5.1 (Sheldrick, 1997)'
_computing_publication_material  'SHELXTL V5.1'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(1)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       '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  0.0262
_diffrn_reflns_av_sigmaI/netI    0.0406
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4944
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.25
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.338
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.62
_exptl_crystal_size_mid          0.46
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.146
_refine_diff_density_min         -0.184
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_coef       0.0301(10)
_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   1.018
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     205
_refine_ls_number_reflns         2381
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0314
_refine_ls_R_factor_gt           0.0294
_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^)+(0.0251P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0625
_refine_ls_wR_factor_ref         0.0630
_reflns_number_gt                2185
_reflns_number_total             2381
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b414770g.txt
_cod_data_source_block           bkbk2s
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7050052