C8H22O5Si2
Taylor, Peter. G.; Coles, Simon J.; Hursthouse, Michael B.; Crystal Structure Report Archive  (2000) 774–; doi:

data_1519254
_publ_section_title
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 C8H22O5Si2
;
_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              774
_journal_year                    2000
_chemical_formula_sum            'C8 H22 O5 Si2'
_chemical_formula_weight         254.44
_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                89.14(3)
_cell_angle_beta                 79.65(3)
_cell_angle_gamma                81.51(3)
_cell_formula_units_Z            2
_cell_length_a                   6.2157(12)
_cell_length_b                   9.6972(19)
_cell_length_c                   11.921(2)
_cell_measurement_reflns_used    14964
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.51
_cell_measurement_theta_min      2.91
_cell_volume                     699.1(2)
_computing_cell_refinement       'DENZO and COLLECT'
_computing_data_collection
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'DENZO (Otwinowski and Minor, 1997) & COLLECT (Hooft, 1998) '
;
_computing_data_reduction        'DENZO and COLLECT'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device_type  'Enraf Nonius KappaCCD area detector'
_diffrn_measurement_method       '\p and \q scans to fill Ewald sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enraf Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0513
_diffrn_reflns_av_sigmaI/netI    0.0510
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            9740
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.37
_exptl_absorpt_coefficient_mu    0.254
_exptl_absorpt_correction_T_max  0.9701
_exptl_absorpt_correction_T_min  0.9509
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SORTAV (R. H. Blessing, 1995, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.209
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.371
_refine_diff_density_min         -0.531
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         3090
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0602
_refine_ls_R_factor_gt           0.0443
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0583P)^2^+0.2797P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1168
_refine_ls_wR_factor_ref         0.1264
_reflns_number_gt                2401
_reflns_number_total             3090
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            eCrystal-774.cif
_cod_data_source_block           s92
_cod_depositor_comments
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Citation :
Taylor, Peter. G. and Coles, Simon J. and Hursthouse, Michael B. (2000) 
University of Southampton, Crystal Structure Report Archive. 

More at:
http://ecrystals.chem.soton.ac.uk/774/

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 3105 2015-03-04 15:46:00Z robertas 
;
_cod_original_cell_volume        699.0(2)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1519254