Complexes of mixed silicon halides with 4-picoline
Hensen, Karl; Mayr-Stein, Ralf; Spangenberg, Björn; Bolte, Michael; Acta Crystallographica Section C 56 (2000) 610–613; doi:10.1107/S010827010000278X

data_2010923
_publ_section_title
;
 Complexes of mixed silicon halides with 4-picoline
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              610
_journal_page_last               613
_journal_paper_doi               10.1107/S010827010000278X
_journal_volume                  56
_journal_year                    2000
_chemical_formula_sum            'C12 H14 Br4 N2 Si'
_chemical_formula_weight         533.98
_space_group_IT_number           53
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2'
_symmetry_space_group_name_H-M   'P m n a'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.3298(2)
_cell_length_b                   8.2819(3)
_cell_length_c                   13.4126(3)
_cell_measurement_reflns_used    7725
_cell_measurement_temperature    143(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      1
_cell_volume                     814.21(4)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT  (Siemens, 1995)'
_computing_molecular_graphics    'XP (in SHELXTL-Plus, 1991)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      143(2)
_diffrn_measured_fraction_theta_full .997
_diffrn_measured_fraction_theta_max .997
_diffrn_measurement_device_type  'Siemens CCD three-circle diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .0446
_diffrn_reflns_av_sigmaI/netI    .0251
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7079
_diffrn_reflns_theta_full        26.38
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         2.89
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  1200
_diffrn_standards_number         183
_exptl_absorpt_coefficient_mu    9.947
_exptl_absorpt_correction_T_max  .609
_exptl_absorpt_correction_T_min  .105
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.178
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             508
_exptl_crystal_size_max          .30
_exptl_crystal_size_mid          .20
_exptl_crystal_size_min          .05
_refine_diff_density_max         .634
_refine_diff_density_min         -.478
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     56
_refine_ls_number_reflns         907
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          .0405
_refine_ls_R_factor_gt           .0277
_refine_ls_shift/su_max          .001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0342P)^2^+0.9192P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .0653
_reflns_number_gt                728
_reflns_number_total             907
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ln1098.cif
_cod_data_source_block           V
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Empirical'
changed to 'empirical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P m n a '
_cod_database_code               2010923
_cod_database_fobs_code          2010923