4,6-Dihydroxypyrimidine: a selective bridging ligand for controlled Group IV metal alkoxide structures
Boyle, Timothy J.; Rodriguez, Mark A.; Alam, Todd M.; Dalton Transactions  (2003) 4598–; doi:10.1039/b310087a

data_7013562
_publ_section_title
;
 4,6-Dihydroxypyrimidine: a selective bridging ligand for controlled
 Group IV metal alkoxide structures
;
_journal_issue                   24
_journal_name_full               'Dalton Transactions'
_journal_page_first              4598
_journal_paper_doi               10.1039/b310087a
_journal_year                    2003
_chemical_formula_sum            'C44 H88 N4 O16 Ti4'
_chemical_formula_weight         1120.78
_chemical_name_common            Ti4(u-DHP)2(u-OPri)4(OPri)8
_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                96.204(6)
_cell_angle_beta                 98.401(6)
_cell_angle_gamma                103.870(6)
_cell_formula_units_Z            2
_cell_length_a                   11.732(5)
_cell_length_b                   15.003(6)
_cell_length_c                   17.776(7)
_cell_measurement_temperature    168(2)
_cell_volume                     2971(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      168(2)
_diffrn_measured_fraction_theta_full 0.887
_diffrn_measured_fraction_theta_max 0.887
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0198
_diffrn_reflns_av_sigmaI/netI    0.0370
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            24842
_diffrn_reflns_theta_full        28.18
_diffrn_reflns_theta_max         28.18
_diffrn_reflns_theta_min         1.17
_exptl_absorpt_coefficient_mu    0.579
_exptl_absorpt_correction_T_max  0.7783
_exptl_absorpt_correction_T_min  0.7391
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS ver 2.03, Sheldrick (1999).'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.253
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.556
_exptl_crystal_size_mid          0.460
_exptl_crystal_size_min          0.456
_refine_diff_density_max         0.816
_refine_diff_density_min         -0.584
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     637
_refine_ls_number_reflns         12945
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0769
_refine_ls_R_factor_gt           0.0594
_refine_ls_shift/su_max          0.124
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0708P)^2^+2.5172P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1449
_refine_ls_wR_factor_ref         0.1555
_reflns_number_gt                10049
_reflns_number_total             12945
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b310087a.txt
_cod_data_source_block           tjb219p
_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_cell_volume        2972(2)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7013562