Robust hydrogen-bonded self-assemblies from biimidazole complexes. Synthesis and structural characterization of [M(biimidazole)2(OH2)2]2+ (M = Co2+, Ni2+) complexes and carboxylate modules.
Atencio, Reinaldo; Chacón, Mirbel; González, Teresa; Briceño, Alexander; Agrifoglio, Giuseppe; Sierraalta, Anibal; Dalton transactions (Cambridge, England : 2003)  (2004) 505–513; doi:10.1039/b312541f

data_7013701
_publ_section_title
;
 Robust hydrogen-bonded self-assemblies from biimidazole complexes.
 Synthesis and structural characterization of [M(biimidazole)2(OH2)2]2+
 (M = Co2+, Ni2+) complexes and carboxylate modules.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              505
_journal_page_last               513
_journal_paper_doi               10.1039/b312541f
_journal_year                    2004
_chemical_compound_source        Synthesis
_chemical_formula_moiety         'C20 H28 Co N8 O10'
_chemical_formula_sum            'C20 H28 Co N8 O10'
_chemical_formula_weight         599.43
_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_date             '3 September 2003'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.40(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.483(3)
_cell_length_b                   7.9700(16)
_cell_length_c                   22.541(5)
_cell_measurement_reflns_used    17
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      44.140
_cell_measurement_theta_min      31.760
_cell_volume                     2601.1(9)
_computing_cell_refinement
;
MSC/AFC, Diffractometer Control Software (Molecular
Structure Corporation, 1993a)
;
_computing_data_collection
;
MSC/AFC, Diffractometer Control Software (Molecular
Structure Corporation, 1993a)
;
_computing_data_reduction
;
TEXSAN, (Molecular Structure Corporation, 1993a)
;
_computing_molecular_graphics    'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_computing_publication_material  'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_computing_structure_refinement  'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_computing_structure_solution    'SHELXLTL-NT V5.1 (Bruker AXS, 1998)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku AFC7S'
_diffrn_measurement_method       '\w-2\q scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0112
_diffrn_reflns_av_sigmaI/netI    0.0188
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            2391
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.81
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.729
_exptl_absorpt_correction_T_max  0.7897
_exptl_absorpt_correction_T_min  0.7494
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al.,1968)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.531
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'Irregular block'
_exptl_crystal_F_000             1244
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.34
_refine_diff_density_max         0.223
_refine_diff_density_min         -0.301
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     179
_refine_ls_number_reflns         2294
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0434
_refine_ls_R_factor_gt           0.0305
_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^)+(0.0287P)^2^+4.5622P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0701
_refine_ls_wR_factor_ref         0.0788
_reflns_number_gt                1918
_reflns_number_total             2294
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b312541f.txt
_cod_data_source_block           c2c-p
_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.

'_exptl_absorpt_correction_type' value 'Psi-scan' changed to
'psi-scan' 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 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7013701