Dinuclear dialkoxo-bridged cyclopentadienylsiloxo titanium complexes
Postigo, Lorena; Sánchez-Nieves, Javier; Royo, Pascual; Mosquera, Marta E. G.; Dalton Transactions  (2009) 3756–3765; doi:10.1039/b820092k

data_7001231
_publ_section_title
;
 Dinuclear dialkoxo-bridged cyclopentadienylsiloxo titanium complexes
;
_journal_issue                   19
_journal_name_full               'Dalton Transactions'
_journal_page_first              3756
_journal_page_last               3765
_journal_paper_doi               10.1039/b820092k
_journal_year                    2009
_chemical_formula_sum            'C25 H41 Cl2 O5 Si2 Ti2'
_chemical_formula_weight         644.46
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 116.591(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.207(5)
_cell_length_b                   11.438(3)
_cell_length_c                   17.691(3)
_cell_measurement_reflns_used    124
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      19.356
_cell_measurement_theta_min      3.025
_cell_volume                     3113.5(14)
_computing_cell_refinement
'Dirax/lsq (Duisenberg & Schreurs, 1989-2000)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction        'EvalCCD (Duisenberg & Schreurs 1990-2000)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       X=UH
_diffrn_orient_matrix_UB_11      0.01
_diffrn_orient_matrix_UB_12      0
_diffrn_orient_matrix_UB_13      0
_diffrn_orient_matrix_UB_21      0
_diffrn_orient_matrix_UB_22      0.01
_diffrn_orient_matrix_UB_23      0
_diffrn_orient_matrix_UB_31      0
_diffrn_orient_matrix_UB_32      0
_diffrn_orient_matrix_UB_33      0.01
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0667
_diffrn_reflns_av_sigmaI/netI    0.0511
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            67211
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         3.56
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.793
_exptl_absorpt_correction_T_max  0.748
_exptl_absorpt_correction_T_min  0.489
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
R.H. Blessing, Acta Cryst. (1995), A51, 33-38
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.375
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1348
_exptl_crystal_size_max          0.484
_exptl_crystal_size_mid          0.431
_exptl_crystal_size_min          0.362
_platon_squeeze_details
;Half a molecule of hexane crystallize with every molecule of this compound
but presented severe disorder and it was not possible to get a chemical
sensible model for it, so Squeeze procedure was used to remove its
contribution to the structure factors.
;
_refine_diff_density_max         0.664
_refine_diff_density_min         -0.617
_refine_diff_density_rms         0.128
_refine_ls_extinction_coef       0.058(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         7118
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0799
_refine_ls_R_factor_gt           0.0646
_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^)+(0.0737P)^2^+10.2233P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1616
_refine_ls_wR_factor_ref         0.1711
_reflns_number_gt                5687
_reflns_number_total             7118
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b820092k.txt
_cod_data_source_block           1a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 21/c'
_cod_database_code               7001231