Silicon Compounds of 1,1-Bis(pyrrol-2-yl)ethenes: Molecular Structures and Chemical and Spectroscopic Properties
Kämpfe, Alexander; Kroke, Edwin; Wagler, Jörg; Organometallics 33 (2014) 112–; doi:10.1021/om400868w

data_4082592
_publ_section_title
;
 Silicon Compounds of 1,1-Bis(pyrrol-2-yl)ethenes: Molecular Structures
 and Chemical and Spectroscopic Properties
;
_journal_issue                   1
_journal_name_full               Organometallics
_journal_page_first              112
_journal_paper_doi               10.1021/om400868w
_journal_volume                  33
_journal_year                    2014
_chemical_formula_moiety         'C21 H30 N2 Si'
_chemical_formula_sum            'C21 H30 N2 Si'
_chemical_formula_weight         338.56
_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                 90.057(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9042(3)
_cell_length_b                   22.3350(11)
_cell_length_c                   9.5791(3)
_cell_measurement_reflns_used    26467
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.12
_cell_measurement_theta_min      2.46
_cell_volume                     1905.05(13)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_molecular_graphics    'ORTEP32 (Farugia)'
_computing_publication_material  'CIFTAB (Sheldrick)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'STOE IPDS-2T'
_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  0.0453
_diffrn_reflns_av_sigmaI/netI    0.0488
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            17701
_diffrn_reflns_theta_full        26.83
_diffrn_reflns_theta_max         26.83
_diffrn_reflns_theta_min         2.80
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.9929
_exptl_absorpt_correction_T_min  0.9714
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   XShape
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.180
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.244
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.30(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     446
_refine_ls_number_reflns         8085
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0474
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0325P)^2^+0.6051P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0807
_refine_ls_wR_factor_ref         0.0844
_reflns_number_gt                7486
_reflns_number_total             8085
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400868w_si_002.cif
_cod_data_source_block           compound4c_in_P21
_cod_original_sg_symbol_Hall     P2yb
_cod_original_sg_symbol_H-M      P21
_cod_database_code               4082592