Metal complexes with a chiral N4 symmetrical Schiff base. Crystal structures of the ligand and its Cu(II) and Ni(II) “mono-helicates”
Miguel Vázquez; Manuel R. Bermejo; Jesús Sanmartín; Ana M. García-Deibe; Carlos Lodeiro; José Mahía; J. Chem. Soc., Dalton Trans.  (2002) 870–877; doi:10.1039/b107116p

data_7011065
_publ_section_title
;
 Metal complexes with a chiral N4 symmetrical Schiff base. Crystal
 structures of the ligand and its Cu(II) and Ni(II)
 &#x201C;mono-helicates&#x201D;
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_journal_issue                   6
_journal_name_full               'J. Chem. Soc., Dalton Trans.'
_journal_page_first              870
_journal_page_last               877
_journal_paper_doi               10.1039/b107116p
_journal_year                    2002
_chemical_formula_sum            'C34 H36 N4 O4 S2'
_chemical_formula_weight         628.79
_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                 92.9210(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.2798(3)
_cell_length_b                   15.2754(4)
_cell_length_c                   18.9152(3)
_cell_measurement_reflns_used    107
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27
_cell_measurement_theta_min      3
_cell_volume                     3254.92(13)
_computing_cell_refinement       'Siemens SMART'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       'Siemens CCD'
_diffrn_measurement_method       '\w 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  0.0662
_diffrn_reflns_av_sigmaI/netI    0.0857
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            13155
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.71
_diffrn_standards_interval_count 'end of measurement'
_diffrn_standards_number         '50 first frames'
_exptl_absorpt_coefficient_mu    0.207
_exptl_absorpt_correction_T_max  0.977511
_exptl_absorpt_correction_T_min  0.676211
_exptl_absorpt_correction_type   Sadabs
_exptl_crystal_colour            'Pale brown'
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_description       Needle
_exptl_crystal_F_000             1328
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.164
_refine_diff_density_min         -0.289
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     454
_refine_ls_number_reflns         5722
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.1532
_refine_ls_R_factor_gt           0.0623
_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^)+(0.0453P)^2^+0.9227P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1127
_refine_ls_wR_factor_ref         0.1456
_reflns_number_gt                2823
_reflns_number_total             5722
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b107116p.txt
_cod_data_source_block           H2cyts
_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 
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7011065