C20H20BrNO2Si
Butler, Ian R.; Horton, Peter N.; Hursthouse, Michael B.; Crystal Structure Report Archive  (2004) 923–; doi:

data_1519590
_publ_section_title
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 C20H20BrNO2Si
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_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              923
_journal_year                    2004
_chemical_formula_moiety         'C20 H20 Br N O2 Si'
_chemical_formula_sum            'C20 H20 Br N O2 Si'
_chemical_formula_weight         414.37
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                87.687(17)
_cell_angle_beta                 86.67(2)
_cell_angle_gamma                81.403(18)
_cell_formula_units_Z            2
_cell_length_a                   6.7406(14)
_cell_length_b                   11.7940(19)
_cell_length_c                   11.945(3)
_cell_measurement_reflns_used    4247
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     936.9(3)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'ORTEP3 for Windows (Farrugia, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997b)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0632
_diffrn_reflns_av_sigmaI/netI    0.0549
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            21063
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.06
_exptl_absorpt_coefficient_mu    2.271
_exptl_absorpt_correction_T_max  0.9560
_exptl_absorpt_correction_T_min  0.6595
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.469
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             424
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.561
_refine_diff_density_min         -0.486
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         4306
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0584
_refine_ls_R_factor_gt           0.0402
_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^)+(0.0149P)^2^+0.9398P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0718
_refine_ls_wR_factor_ref         0.0774
_reflns_number_gt                3511
_reflns_number_total             4306
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            eCrystal-923.cif
_cod_data_source_block           04src0845
_cod_depositor_comments
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Citation :
Butler, Ian R. and Horton, Peter N. and Hursthouse, Michael B. (2004) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/923)

More at:
http://ecrystals.chem.soton.ac.uk/923/
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_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1519590