Poly[[aquabis(μ~3~-isonicotinato-κ^3^<i>O</i>:<i>O</i>':<i>N</i>)tris(μ~2~-isonicotinato-κ^3^<i>O</i>,<i>O</i>':<i>N</i>)(nitrato-κ<i>O</i>)bis(μ~4~-oxalato-κ^6^<i>O</i>^1^,<i>O</i>^2^:<i>O</i>^2^:<i>O</i>^1'^,<i>O</i>^2'^:<i>O</i>^1'^)dierbium(III)tetrasilver(I)] tetrahydrate]
Wen, Yan-Mei; Feng, Tian-Jun; He, Li-Xin; Acta Crystallographica Section E 65 (2009) m676–m677; doi:10.1107/S160053680901842X

data_2222068
_publ_section_title
;Poly[[aquabis(\m~3~-isonicotinato-\k^3^<i>O</i>:<i>O</i>':<i>N</i>)tris(\m~2~-isonicotinato-\k^3^<i>O</i>,<i>O</i>':<i>N</i>)(nitrato-\k<i>O</i>)bis(\m~4~-oxalato-\k^6^<i>O</i>^1^,<i>O</i>^2^:<i>O</i>^2^:<i>O</i>^1'^,<i>O</i>^2'^:<i>O</i>^1'^)dierbium(III)tetrasilver(I)]
 tetrahydrate]
;
_journal_coeditor_code           HY2195
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m676
_journal_page_last               m677
_journal_paper_doi               10.1107/S160053680901842X
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac
'[Ag4 Er2 (C6 H4 N O2)5 (C2 O4)2 (N O3) (H2 O)], 4H2 O'
_chemical_formula_moiety         'C34 H22 Ag4 Er2 N6 O22, 4H2 O'
_chemical_formula_sum            'C34 H30 Ag4 Er2 N6 O26'
_chemical_formula_weight         1704.64
_chemical_name_systematic
;Poly[[aquabis(\m~3~-isonicotinato-\k^3^<i>O</i>:<i>O</i>':<i>N</i>)tris(\m~2~-
isonicotinato-\k^3^<i>O</i>,<i>O</i>':<i>N</i>)(nitrato-\k<i>O</i>)bis(\m~4~-
oxalato-\k^6^<i>O</i>^1^,<i>O</i>^2^:<i>O</i>^2^:<i>O</i>^1'^,<i>O</i>^2'^:
<i>O</i>^1'^)dierbium(III)tetrasilver(I)]
 tetrahydrate]
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                76.9400(10)
_cell_angle_beta                 76.6120(10)
_cell_angle_gamma                76.0350(10)
_cell_formula_units_Z            1
_cell_length_a                   8.8561(8)
_cell_length_b                   11.6428(8)
_cell_length_c                   11.9597(9)
_cell_measurement_reflns_used    2895
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.89
_cell_measurement_theta_min      2.35
_cell_volume                     1145.14(16)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics
'SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Bruker APEXII CCD'
_diffrn_measurement_method       '\f and \w'
_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  0.0282
_diffrn_reflns_av_sigmaI/netI    0.0648
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            5823
_diffrn_reflns_theta_full        25.20
_diffrn_reflns_theta_max         25.20
_diffrn_reflns_theta_min         1.78
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    5.398
_exptl_absorpt_correction_T_max  0.336
_exptl_absorpt_correction_T_min  0.224
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.472
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.21
_refine_diff_density_max         1.568
_refine_diff_density_min         -1.316
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     377
_refine_ls_number_reflns         4043
_refine_ls_number_restraints     95
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0674
_refine_ls_R_factor_gt           0.0529
_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^)+(0.0536P)^2^+8.9026P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1216
_refine_ls_wR_factor_ref         0.1282
_reflns_number_gt                3265
_reflns_number_total             4043
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hy2195.cif
_cod_data_source_block           I
_cod_database_code               2222068
_cod_database_fobs_code          2222068