Framework isomers controlled by the speed of crystallization: different aggregation fashions of Zn(ii) and 1,2,4-triazol-3-amine, distinct (3,4)-connected self-penetrating nets, and various pore shapes.
Luo, Ming-Biao; Yuan, Zi-Zun; Xu, Wen-Yuan; Luo, Feng; Li, Jian-Qiang; Zhu, Yan; Feng, Xue-Feng; Liu, Shu-Juan; Dalton transactions (Cambridge, England : 2003) 42 (2013) 13802–13805; doi:10.1039/c3dt51454d

data_7021897
_publ_section_title
;
 Framework isomers controlled by the speed of crystallization: different
 aggregation fashions of Zn(ii) and 1,2,4-triazol-3-amine, distinct
 (3,4)-connected self-penetrating nets, and various pore shapes.
;
_journal_issue                   38
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13802
_journal_page_last               13805
_journal_paper_doi               10.1039/c3dt51454d
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C12 H10 N8 O4 Zn2'
_chemical_formula_weight         461.02
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           126
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4a 2bc'
_symmetry_space_group_name_H-M   'P 4/n n c :2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   12.6724(4)
_cell_length_b                   12.6724(4)
_cell_length_c                   25.2868(16)
_cell_measurement_reflns_used    5501
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.60
_cell_measurement_theta_min      2.90
_cell_volume                     4060.8(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0198
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            13894
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.61
_exptl_absorpt_coefficient_mu    2.394
_exptl_absorpt_correction_T_max  0.6725
_exptl_absorpt_correction_T_min  0.6460
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.508
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_platon_squeeze_details
;
;
_refine_diff_density_max         0.413
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.098
_refine_ls_extinction_coef       0.00079(11)
_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   1.121
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     119
_refine_ls_number_reflns         1802
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.121
_refine_ls_R_factor_all          0.0323
_refine_ls_R_factor_gt           0.0291
_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^)+(0.0454P)^2^+2.3721P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0847
_refine_ls_wR_factor_ref         0.0869
_reflns_number_gt                1632
_reflns_number_total             1802
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3dt51454d.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P4/nnc
_cod_database_code               7021897