<i>trans</i>-Diaquabis(1<i>H</i> imidazolium-4,5-dicarboxylato-κ^2^<i>O</i>^4^,<i>O</i>^5^)magnesium
Łuczyńska-Szymczak, Katarzyna; Starosta, Wojciech; Leciejewicz, Janusz; Acta Crystallographica Section E 68 (2012) m688–; doi:10.1107/S1600536812017667

data_2234651
_publ_section_title
;
 <i>trans</i>-Diaquabis(1<i>H</i>
 imidazolium-4,5-dicarboxylato-\k^2^<i>O</i>^4^,<i>O</i>^5^)magnesium
;
_journal_coeditor_code           HB6745
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m688
_journal_paper_doi               10.1107/S1600536812017667
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          '[Mg (C5 H3 N2 O4)2 (H2 O)2]'
_chemical_formula_moiety         'C10 H10 Mg N4 O10'
_chemical_formula_sum            'C10 H10 Mg N4 O10'
_chemical_formula_weight         370.53
_chemical_name_systematic
;
<i>trans</i>-Diaquabis(1<i>H</i>-imidazol-3-ium-4,5-dicarboxylato-
\k^2^<i>O</i>^4^,<i>O</i>^5^)magnesium
;
_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                 115.46(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.2545(15)
_cell_length_b                   13.847(3)
_cell_length_c                   6.9975(14)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      6
_cell_volume                     634.7(3)
_computing_cell_refinement       'KM-4 Software (Kuma, 1996)'
_computing_data_collection       'KM-4 Software (Kuma, 1996)'
_computing_data_reduction        'DATAPROC (Kuma, 2001)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'Kuma KM-4 four-cricle'
_diffrn_measurement_method       'profile data from \w/2\q 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  0.0084
_diffrn_reflns_av_sigmaI/netI    0.0197
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            1955
_diffrn_reflns_theta_full        30.07
_diffrn_reflns_theta_max         30.07
_diffrn_reflns_theta_min         2.94
_diffrn_standards_decay_%        0.59
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.217
_exptl_absorpt_correction_T_max  0.97018
_exptl_absorpt_correction_T_min  0.95690
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
'(<i>CrysAlis RED</i>; Oxford Diffraction, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.939
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.222
_exptl_crystal_size_mid          0.206
_exptl_crystal_size_min          0.153
_refine_diff_density_max         0.419
_refine_diff_density_min         -0.281
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     131
_refine_ls_number_reflns         1821
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0508
_refine_ls_R_factor_gt           0.0328
_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^)+(0.0578P)^2^+0.2647P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0904
_refine_ls_wR_factor_ref         0.1007
_reflns_number_gt                1439
_reflns_number_total             1821
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb6745.cif
_cod_data_source_block           I
_cod_original_cell_volume        634.6(2)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2234651
_cod_database_fobs_code          2234651