Structurally diverse copper(ii) complexes with pyridazine-integrated with pyrazine‒Schiff base ligand featuring an easily lost proton in the hydrazone backbone
Cao, Jing; Liu, Jia-Cheng; Deng, Wen-Ting; Jin, Neng-Zhi; CrystEngComm 15 (2013) 6359–; doi:10.1039/c3ce40605a

data_7210276
_publ_section_title
;
 Structurally diverse copper(ii) complexes with pyridazine-integrated with
 pyrazine--Schiff base ligand featuring an easily lost proton in the
 hydrazone backbone
;
_journal_issue                   32
_journal_name_full               CrystEngComm
_journal_page_first              6359
_journal_paper_doi               10.1039/c3ce40605a
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C20 H16 Cl4 Cu2 N12'
_chemical_formula_weight         693.33
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 106.423(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.870(6)
_cell_length_b                   19.709(8)
_cell_length_c                   8.759(3)
_cell_measurement_reflns_used    1711
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.61
_cell_measurement_theta_min      2.65
_cell_volume                     2462.3(16)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_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  0.0319
_diffrn_reflns_av_sigmaI/netI    0.0447
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5731
_diffrn_reflns_theta_full        25.48
_diffrn_reflns_theta_max         25.48
_diffrn_reflns_theta_min         2.65
_exptl_absorpt_coefficient_mu    2.201
_exptl_absorpt_correction_T_max  0.7337
_exptl_absorpt_correction_T_min  0.6550
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.870
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1384
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.653
_refine_diff_density_min         -0.449
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.580
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     173
_refine_ls_number_reflns         2268
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.580
_refine_ls_R_factor_all          0.0651
_refine_ls_R_factor_gt           0.0377
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0483
_refine_ls_wR_factor_ref         0.0513
_reflns_number_gt                1665
_reflns_number_total             2268
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce40605a.txt
_cod_data_source_block           cc
_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_sg_symbol_H-M      C2/c
_cod_database_code               7210276