Poly[bis(μ~2~-2-aminopyrazine-κ^2^<i>N</i>^1^:<i>N</i>^4^)(μ~2~-nitrato-κ^2^<i>O</i>:<i>O</i>)(nitrato-κ^2^<i>O</i>,<i>O</i>')disilver(I)]: an achiral two-dimensional coordination polymer forming chiral crystals
Sun, Di; Luo, Geng-Geng; Zhang, Na; Huang, Rong-Bin; Zheng, Lan-Sun; Acta Crystallographica Section C 65 (2009) m478–m480; doi:10.1107/S0108270109045806

data_2017422
_publ_section_title
;Poly[bis(\m~2~-2-aminopyrazine-\k^2^<i>N</i>^1^:<i>N</i>^4^)(\m~2~-nitrato-\k^2^<i>O</i>:<i>O</i>)(nitrato-\k^2^<i>O</i>,<i>O</i>')disilver(I)]:
 an achiral two-dimensional coordination polymer forming chiral crystals
;
_journal_coeditor_code           DN3128
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              m478
_journal_page_last               m480
_journal_paper_doi               10.1107/S0108270109045806
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          '[Ag2 (N O3)2 (C4 H5 N3)2]'
_chemical_formula_moiety         'C8 H10 Ag2 N8 O6'
_chemical_formula_sum            'C8 H10 Ag2 N8 O6'
_chemical_formula_weight         529.98
_chemical_name_systematic
;
Poly[bis(\m~2~-2-aminopyrazine-\k^2^<i>N</i>^1^:<i>N</i>^4^)(\m~2~-nitrato-\
\k^2^<i>O</i>:<i>O</i>)(nitrato-\k^2^<i>O</i>,<i>O</i>')disilver(I)]
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 97.566(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   3.60870(10)
_cell_length_b                   15.4328(5)
_cell_length_c                   12.7326(3)
_cell_measurement_reflns_used    3225
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      30.7041
_cell_measurement_theta_min      2.6347
_cell_volume                     702.93(3)
_computing_cell_refinement       'CrysAlis RED (Oxford Diffraction, 2008)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2008)'
_computing_data_reduction        'CrysAlis RED (Oxford Diffraction, 2008)'
_computing_molecular_graphics    'DIAMOND  (Brandenburg, 2008)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 16.1903
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Oxford Diffraction Gemini S Ultra'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0361
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3805
_diffrn_reflns_theta_full        28.00
_diffrn_reflns_theta_max         28.00
_diffrn_reflns_theta_min         2.64
_exptl_absorpt_coefficient_mu    2.837
_exptl_absorpt_correction_T_max  0.7271
_exptl_absorpt_correction_T_min  0.6292
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis RED; Oxford Diffraction, 2008)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.504
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.614
_refine_diff_density_min         -0.722
_refine_ls_abs_structure_details 'Flack (1983), 812 Friedel pairs'
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.991
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2573
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.991
_refine_ls_R_factor_all          0.0247
_refine_ls_R_factor_gt           0.0227
_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^)+(0.0290P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0495
_refine_ls_wR_factor_ref         0.0498
_reflns_number_gt                2436
_reflns_number_total             2573
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            dn3128.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2017422
_cod_database_fobs_code          2017422