Poly[di-μ-aqua-μ~4~-(pyrazine-2,5-dicarboxylato)-dilithium(I)]
Starosta, Wojciech; Leciejewicz, Janusz; Acta Crystallographica Section E 67 (2011) m50–m51; doi:10.1107/S1600536810050762

data_2228731
_publ_section_title
;
 Poly[di-\m-aqua-\m~4~-(pyrazine-2,5-dicarboxylato)-dilithium(I)]
;
_journal_coeditor_code           HB5759
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m50
_journal_page_last               m51
_journal_paper_doi               10.1107/S1600536810050762
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          '[Li2 (C6 H2 N2 O2) (H2 O)2 ]'
_chemical_formula_moiety         'C6 H6 Li2 N2 O6'
_chemical_formula_sum            'C6 H6 Li2 N2 O6'
_chemical_formula_weight         216.01
_chemical_name_systematic
;
Poly[di-\m-aqua-\m~4~-(pyrazine-2,5-dicarboxylato)-dilithium(I)]
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 99.71(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.2107(14)
_cell_length_b                   7.3646(15)
_cell_length_c                   15.327(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      6
_cell_volume                     802.3(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 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Kuma KM-4 four-circle'
_diffrn_measurement_method       'profile data from \w/2\q'
_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  0.0692
_diffrn_reflns_av_sigmaI/netI    0.0285
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            2520
_diffrn_reflns_theta_full        30.09
_diffrn_reflns_theta_max         30.09
_diffrn_reflns_theta_min         2.70
_diffrn_standards_decay_%        0.55
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.155
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.976
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details   '(CrysAlis RED; Oxford Diffraction, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.788
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.734
_refine_diff_density_min         -0.623
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.992
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     161
_refine_ls_number_reflns         2348
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.0786
_refine_ls_R_factor_gt           0.0537
_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^)+(0.1327P)^2^+0.0049P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1434
_refine_ls_wR_factor_ref         0.1610
_reflns_number_gt                1694
_reflns_number_total             2348
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb5759.cif
_cod_data_source_block           I
_cod_original_cell_volume        802.2(3)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2228731
_cod_database_fobs_code          2228731