Single, double and triple deprotonation of a beta-diketimine bearing pendant pyridyl group and the corresponding rare-earth metal complexes.
Xu, Xin; Chen, Yaofeng; Zou, Gang; Sun, Jie; Dalton transactions (Cambridge, England : 2003) 39 (2010) 3952–3958; doi:10.1039/b926898g

data_7025312
_publ_section_title
;
 Single, double and triple deprotonation of a beta-diketimine bearing
 pendant pyridyl group and the corresponding rare-earth metal complexes.
;
_journal_issue                   16
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3952
_journal_page_last               3958
_journal_paper_doi               10.1039/b926898g
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C35 H56 N3 O2 Si Y'
_chemical_formula_weight         667.83
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 100.217(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.6283(18)
_cell_length_b                   18.118(3)
_cell_length_c                   21.637(4)
_cell_measurement_reflns_used    2521
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      38.994
_cell_measurement_theta_min      4.438
_cell_volume                     3714.6(12)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.1445
_diffrn_reflns_av_sigmaI/netI    0.1873
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            18865
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    1.634
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.4434
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.194
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1424
_exptl_crystal_size_max          0.482
_exptl_crystal_size_mid          0.403
_exptl_crystal_size_min          0.170
_refine_diff_density_max         0.753
_refine_diff_density_min         -0.555
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.885
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     378
_refine_ls_number_reflns         6889
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.885
_refine_ls_R_factor_all          0.1444
_refine_ls_R_factor_gt           0.0583
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0520P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1308
_refine_ls_wR_factor_ref         0.1512
_reflns_number_gt                3109
_reflns_number_total             6889
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b926898g.txt
_cod_data_source_block           cd2989
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        3714.5(12)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7025312