Refinement of the crystal structure of tetra(imidazole)copper(II) diperchlorate, Cu(C~3~N~2~H~4~)~4~(ClO~4~)~2~
Yao, Jing-Cai; Yao, Feng-Juan; Li, Yun-Chao; Wang, Jian-Ge; Zeitschrift für Kristallographie - New Crystal Structures 222 (2007) 211–212; doi:

data_8102119
_publ_section_title
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Refinement of the crystal structure of tetra(imidazole)copper(II) 
diperchlorate, Cu(C~3~N~2~H~4~)~4~(ClO~4~)~2~
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_journal_issue                   3
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              211
_journal_page_last               212
_journal_volume                  222
_journal_year                    2007
_chemical_formula_structural     Cu(C3N2H4)4(ClO4)2
_chemical_formula_sum            'C12 H16 Cl2 Cu N8 O8'
_chemical_formula_weight         534.77
_chemical_name_systematic
;
tetra(imidazole)copper(II) diperchlorate
;
_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                 109.772(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.2154(15)
_cell_length_b                   16.404(3)
_cell_length_c                   8.0937(14)
_cell_measurement_reflns_used    3474
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      28.17
_cell_measurement_theta_min      2.48
_cell_volume                     1026.4(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      291(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       phi/omega
_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  0.0184
_diffrn_reflns_av_sigmaI/netI    0.0226
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            6113
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.48
_exptl_absorpt_coefficient_mu    1.384
_exptl_absorpt_correction_T_max  0.6721
_exptl_absorpt_correction_T_min  0.5805
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.730
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             542
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.31
_refine_diff_density_max         0.605
_refine_diff_density_min         -0.366
_refine_diff_density_rms         0.062
_refine_ls_extinction_coef       0.031(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         2359
_refine_ls_number_restraints     92
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0396
_refine_ls_R_factor_gt           0.0352
_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^)+(0.0473P)^2^+0.9489P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0937
_refine_ls_wR_factor_ref         0.0971
_reflns_number_gt                2121
_reflns_number_total             2359
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1267-2001.cff
_cod_data_source_block           aaa
_cod_depositor_comments
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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.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN' changed
to 'multi-scan' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value 'CONSTR' changed to
'constr' 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 1555 2011-01-17 13:19:09Z saulius 
;
_cod_original_sg_symbol_H-M      P12(1)/c1
_cod_database_code               8102119