Inhibition studies of Helicobacter pylori urease with Schiff base copper(II) complexes
You, Zhonglu; Liu, Mingyang; Wang, Cunfang; Sheng, Gui-Hua; Zhao, Xinlu; Qu, Dan; Niu, Fang; RSC Adv.  (2016) –; doi:10.1039/C6RA00500D

data_7224145
_publ_section_title
;
 Inhibition studies of Helicobacter pylori urease with Schiff base
 copper(II) complexes
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C6RA00500D
_journal_year                    2016
_chemical_formula_sum            'C22 H28 Br4 Cl2 Cu N4 O4'
_chemical_formula_weight         866.56
_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
_audit_update_record
;
2015-08-15 deposited with the CCDC.
2016-02-04 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 94.353(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.7486(8)
_cell_length_b                   23.271(3)
_cell_length_c                   8.1150(10)
_cell_measurement_reflns_used    2235
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.9
_cell_measurement_theta_min      3.6
_cell_volume                     1459.1(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.974
_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  0.0810
_diffrn_reflns_av_sigmaI/netI    0.0972
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            6417
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    6.445
_exptl_absorpt_correction_T_max  0.3900
_exptl_absorpt_correction_T_min  0.3740
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.972
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             846
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.18
_refine_diff_density_max         2.163
_refine_diff_density_min         -1.333
_refine_diff_density_rms         0.244
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     170
_refine_ls_number_reflns         2642
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1221
_refine_ls_R_factor_gt           0.0905
_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^)+(0.1224P)^2^+7.9781P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2155
_refine_ls_wR_factor_ref         0.2417
_reflns_number_gt                1832
_reflns_number_total             2642
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra00500d2.cif
_cod_data_source_block           7
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7224145