Organic-inorganic hybrid materials constructed from inorganic lanthanide sulfate skeletons and organic 4,5-imidazoledicarboxylic acid.
Sun, Yan-Qiong; Yang, Guo-Yu; Dalton transactions (Cambridge, England : 2003)  (2007) 3771–3781; doi:10.1039/b706072f

data_7005854
_publ_section_title
;
 Organic-inorganic hybrid materials constructed from inorganic
 lanthanide sulfate skeletons and organic 4,5-imidazoledicarboxylic
 acid.
;
_journal_issue                   34
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3771
_journal_page_last               3781
_journal_paper_doi               10.1039/b706072f
_journal_year                    2007
_chemical_formula_sum            'C4 H5 Er N2 O7 S'
_chemical_formula_weight         392.42
_chemical_name_systematic
;
?
;
_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                 107.7710(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.1469(3)
_cell_length_b                   6.447
_cell_length_c                   12.0387(2)
_cell_measurement_reflns_used    47
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.64
_cell_measurement_theta_min      1.92
_cell_volume                     823.87(3)
_computing_cell_refinement       'Siemens SMART'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens XPREP'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0322
_diffrn_reflns_av_sigmaI/netI    0.0278
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4196
_diffrn_reflns_theta_full        25.64
_diffrn_reflns_theta_max         25.64
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    10.462
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  .5525
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    3.164
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             732
_exptl_crystal_size_max          .30
_exptl_crystal_size_mid          .15
_exptl_crystal_size_min          .10
_refine_diff_density_max         2.124
_refine_diff_density_min         -1.141
_refine_diff_density_rms         0.222
_refine_ls_extinction_coef       0.0023(4)
_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   1.208
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         1559
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.208
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0314
_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^)+(0.0358P)^2^+8.7029P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0777
_refine_ls_wR_factor_ref         0.0808
_reflns_number_gt                1456
_reflns_number_total             1559
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b706072f.txt
_cod_data_source_block           173
_cod_original_cell_volume        823.88(3)
_cod_original_sg_symbol_H-M      P_1_21/c_1
_cod_database_code               7005854