Syntheses, structures, and reactivity of poly(pyrazolyl)silanes, -disilanes, and the ambidentate κ1Si/κ3N-coordinating tris(3,5-dimethylpyrazolyl)silanide ligand [Si(3,5-Me2pz)3]− (MeTpsd)
Armbruster, Felix; Fernández, Ignacio; Breher, Frank; Dalton Transactions  (2009) 5612–5626; doi:10.1039/b906333a

data_7001725
_publ_section_title
;
 Syntheses, structures, and reactivity of poly(pyrazolyl)silanes,
 -disilanes, and the ambidentate \k1Si/\k3N-coordinating
 tris(3,5-dimethylpyrazolyl)silanide ligand [Si(3,5-Me2pz)3]&#x2212; (MeTpsd)
;
_journal_coden_ASTM              DTARAF
_journal_issue                   29
_journal_name_full               'Dalton Transactions'
_journal_page_first              5612
_journal_page_last               5626
_journal_paper_doi               10.1039/b906333a
_journal_year                    2009
_chemical_formula_moiety         'C19 H29 Li N6 O Si'
_chemical_formula_sum            'C19 H29 Li N6 O Si'
_chemical_formula_weight         392.51
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 95.99(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.908(2)
_cell_length_b                   14.520(3)
_cell_length_c                   18.629(4)
_cell_measurement_reflns_used    14395
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      3.82
_cell_volume                     2127.4(8)
_computing_cell_refinement       'CrysAlis Red'
_computing_data_collection       'CrysAlis CCD'
_computing_data_reduction        'CrysAlis Red'
_computing_molecular_graphics    'Ortep 32'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Stoe Stadi 4 with CCD'
_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  0.1423
_diffrn_reflns_av_sigmaI/netI    0.1231
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            14395
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.82
_exptl_absorpt_coefficient_mu    0.131
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular shaped crystal'
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.315
_refine_diff_density_min         -0.245
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.306
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         3704
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.306
_refine_ls_R_factor_all          0.1748
_refine_ls_R_factor_gt           0.1338
_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^)+(0.0518P)^2^+1.6948P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2015
_refine_ls_wR_factor_ref         0.2197
_reflns_number_gt                2767
_reflns_number_total             3704
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            B906333A.txt
_cod_data_source_block           LiTpsd
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7001725