One-dimensional mercury(II) halide coordination polymers of 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine ligand: Synthesis, crystal structure, spectroscopic and DFT studies
Saghatforoush, Lotfali; Khoshtarkib, Zeinab; Amani, Vahid; Bakhtiari, Akbar; Hakimi, Mohammad; Keypour, Hassan; Journal of Solid State Chemistry 233 (2016) 311–319; doi:10.1016/j.jssc.2015.11.002

data_1561625
_publ_section_title
;
 One-dimensional mercury(II) halide coordination polymers of
 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine ligand: Synthesis, crystal
 structure, spectroscopic and DFT studies
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              311
_journal_page_last               319
_journal_paper_doi               10.1016/j.jssc.2015.11.002
_journal_volume                  233
_journal_year                    2016
_chemical_formula_sum            'C12 H8 Br2 Hg N6'
_chemical_formula_weight         596.63
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_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                115.260(11)
_cell_angle_beta                 93.940(13)
_cell_angle_gamma                107.423(12)
_cell_formula_units_Z            1
_cell_length_a                   7.3660(11)
_cell_length_b                   7.6676(11)
_cell_length_c                   7.8964(13)
_cell_measurement_reflns_used    3419
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      2.93
_cell_volume                     374.73(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX II'
_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, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX II CCD area detector'
_diffrn_measurement_method       '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  0.0670
_diffrn_reflns_av_sigmaI/netI    0.0578
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3419
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    15.601
_exptl_absorpt_correction_T_max  0.2194
_exptl_absorpt_correction_T_min  0.0226
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            Violet
_exptl_crystal_density_diffrn    2.644
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             272
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.440
_refine_diff_density_min         -2.717
_refine_diff_density_rms         0.257
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     97
_refine_ls_number_reflns         1638
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0464
_refine_ls_R_factor_gt           0.0435
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0798P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1145
_refine_ls_wR_factor_ref         0.1159
_reflns_number_gt                1504
_reflns_number_total             1638
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            JSSC-2016-233-311.cif
_cod_data_source_block           hgbr2
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Numerical' was
changed to 'numerical' in accordance with the built-in table derived
from the CIF Core dictionary named 'cif_core.dic' version 2.4.5 last
updated on 2014-11-21.

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the built-in table derived from the
CIF Core dictionary named 'cif_core.dic' version 2.4.5 last updated
on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 8369 2020-08-20 11:38:08Z andrius 
;
_cod_original_cell_volume        374.73(10)
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C12 H8 Br2 Hg1 N6'
_cod_database_code               1561625