Weak interactions induce asymmetry in the crystal structures of triaryl derivatives of group 14 elements
Prince, Paul D.; Sean McGrady, G.; Steed, Jonathan W.; New Journal of Chemistry 26 (2002) 457–; doi:10.1039/b105457k

data_7050689
_publ_section_title
;
 Weak interactions induce asymmetry in the crystal structures of
 triaryl derivatives of group 14 elements
;
_journal_issue                   4
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              457
_journal_paper_doi               10.1039/b105457k
_journal_volume                  26
_journal_year                    2002
_chemical_formula_sum            'C18 H15 Ge I'
_chemical_formula_weight         430.79
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                83.959(3)
_cell_angle_beta                 78.664(2)
_cell_angle_gamma                77.060(2)
_cell_formula_units_Z            4
_cell_length_a                   9.5925(4)
_cell_length_b                   9.6743(3)
_cell_length_c                   18.3085(8)
_cell_measurement_temperature    100(2)
_cell_volume                     1620.26(11)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'XSeed (Barbour, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '1.9o phi + omega scans 6s/o'
_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  0.0493
_diffrn_reflns_av_sigmaI/netI    0.0615
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9565
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.38
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    3.784
_exptl_absorpt_correction_T_max  0.6007
_exptl_absorpt_correction_T_min  0.4514
_exptl_absorpt_correction_type   Scalepack
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.766
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.647
_refine_diff_density_min         -1.219
_refine_diff_density_rms         0.155
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         5696
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0450
_refine_ls_R_factor_gt           0.0333
_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^)+(0.0279P)^2^+2.2505P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0770
_refine_ls_wR_factor_ref         0.0818
_reflns_number_gt                4829
_reflns_number_total             5696
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b105457k.txt
_cod_data_source_block           ppgei
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7050689