An oxo-bridged centrosymmetric tetranuclear titanium compound
Kemmitt, Tim; Gainsford, Graeme J.; Al-Salim, Najeh I.; Acta Crystallographica Section C 60 (2004) m42–m43; doi:10.1107/S0108270103027902

data_2013894
_publ_section_title
;
 An oxo-bridged centrosymmetric tetranuclear titanium compound
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              m42
_journal_page_last               m43
_journal_paper_doi               10.1107/S0108270103027902
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          '[Ti4 O2 (C5 H11 N1 O2)2 (C4 H9 O1)8]'
_chemical_formula_moiety         'C42 H94 N2 O14 Ti4'
_chemical_formula_sum            'C42 H94 N2 O14 Ti4'
_chemical_formula_weight         1042.79
_chemical_name_systematic
;
octa-tert-butoxy-bis[\m~3~-2,2'-(N-methylimino)diethanolato]di-\m-oxo-
tetratitanium(IV)
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 102.436(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.2937(10)
_cell_length_b                   23.058(3)
_cell_length_c                   13.5360(16)
_cell_measurement_reflns_used    5496
_cell_measurement_temperature    163(2)
_cell_measurement_theta_max      23.76
_cell_measurement_theta_min      2.34
_cell_volume                     2832.6(6)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction
'SAINT (Siemens, 1996) and SADABS (Sheldrick, 1996)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      163(2)
_diffrn_detector_area_resol_mean 8.192
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.081
_diffrn_reflns_av_sigmaI/netI    0.068
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            33365
_diffrn_reflns_theta_full        26.41
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         1.77
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.598
_exptl_absorpt_correction_T_max  0.914
_exptl_absorpt_correction_T_min  0.678
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.223
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1120
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.28
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         5693
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.091
_refine_ls_R_factor_gt           0.043
_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^)+(0.0351P)^2^+1.5206P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.083
_refine_ls_wR_factor_ref         0.098
_reflns_number_gt                3634
_reflns_number_total             5693
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ta1427.cif
_cod_data_source_block           I
_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.

'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (11 times).

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 '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.

'_geom_bond_publ_flag' value 'Y' changed to 'y'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (11
times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        2832.7(6)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2013894
_cod_database_fobs_code          2013894