Cu(I), Co(II) and Fe(II) coordination polymers with pyrazine and benzoate as ligands. Spin crossover, spin canting and metamagnetism phenomena.
Amo-Ochoa, Pilar; Castillo, Oscar; Zamora, Félix; Dalton transactions (Cambridge, England : 2003) 42 (2013) 13453–13460; doi:10.1039/c3dt50596k

data_7023047
_publ_section_title
;
 Cu(I), Co(II) and Fe(II) coordination polymers with pyrazine and benzoate
 as ligands. Spin crossover, spin canting and metamagnetism phenomena.
;
_journal_issue                   37
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13453
_journal_page_last               13460
_journal_paper_doi               10.1039/c3dt50596k
_journal_volume                  42
_journal_year                    2013
_chemical_formula_moiety         'C8 H8 Cu N4, Cl O4, 7(H2 O)'
_chemical_formula_sum            'C8 H22 Cl Cu N4 O11'
_chemical_formula_weight         493.03
_chemical_name_systematic
;
Poly[[(mu-pyrazine)copper(I)] perchlorate heptahydrate]
;
_space_group_IT_number           151
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 31 2 (0 0 4)'
_symmetry_space_group_name_H-M   'P 31 1 2'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   10.8055(15)
_cell_length_b                   10.8055(15)
_cell_length_c                   12.637(3)
_cell_measurement_reflns_used    1588
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.49
_cell_measurement_theta_min      2.18
_cell_volume                     1277.8(4)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.923
_diffrn_measured_fraction_theta_max 0.923
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0683
_diffrn_reflns_av_sigmaI/netI    0.1358
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1588
_diffrn_reflns_theta_full        26.49
_diffrn_reflns_theta_max         26.49
_diffrn_reflns_theta_min         2.18
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.502
_exptl_absorpt_correction_T_max  0.2018
_exptl_absorpt_correction_T_min  0.1568
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.752
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_platon_squeeze_details
;
;
_refine_diff_density_max         0.265
_refine_diff_density_min         -0.347
_refine_diff_density_rms         0.050
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.08(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.778
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     60
_refine_ls_number_reflns         1588
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.778
_refine_ls_R_factor_all          0.0993
_refine_ls_R_factor_gt           0.0461
_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^)+(0.0567P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1026
_refine_ls_wR_factor_ref         0.1110
_reflns_number_gt                750
_reflns_number_total             1588
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt50596k.txt
_cod_data_source_block           compound-1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
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      P3112
_cod_database_code               7023047