Mercury(ii) coordination polymers generated from 1,4-bis(2 or 3 or 4-pyridyl)-2,3-diaza-1,3-butadiene ligands
Mahmoudi, Ghodrat; Morsali, Ali; Hunter, Allen D.; Zeller, Matthias; CrystEngComm 9 (2007) 704–; doi:10.1039/b702569f

data_7202836
_publ_section_title
;
 Mercury(ii) coordination polymers generated from 1,4-bis(2 or 3 or
 4-pyridyl)-2,3-diaza-1,3-butadiene ligands
;
_journal_issue                   8
_journal_name_full               CrystEngComm
_journal_page_first              704
_journal_paper_doi               10.1039/b702569f
_journal_volume                  9
_journal_year                    2007
_chemical_formula_sum            'C12 H10 Br2 Hg N4'
_chemical_formula_weight         570.65
_chemical_name_systematic
;

?

;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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            4
_cell_length_a                   8.3698(11)
_cell_length_b                   14.932(2)
_cell_length_c                   11.9038(16)
_cell_measurement_reflns_used    8049
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.65
_cell_measurement_theta_min      2.19
_cell_volume                     1487.7(3)
_computing_cell_refinement       'SAINT+ 6.45 (Bruker, 2003)'
_computing_data_collection       'SMART 5.630 (Bruker, 1997-2002)'
_computing_data_reduction        'SAINT+ 6.45'
_computing_molecular_graphics    'SHELXTL 6.14'
_computing_publication_material  'SHELXTL 6.14'
_computing_structure_refinement  'SHELXTL 6.14'
_computing_structure_solution    'SHELXTL 6.14 (Bruker, 2000-2003)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker AXS SMART APEX CCD diffractometer'
_diffrn_measurement_method       '\w 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  0.0407
_diffrn_reflns_av_sigmaI/netI    0.0283
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            11759
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.19
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    15.708
_exptl_absorpt_correction_T_max  0.130
_exptl_absorpt_correction_T_min  0.024
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS in SAINT+ (Bruker, 2003)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.548
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1040
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.13
_refine_diff_density_max         3.197
_refine_diff_density_min         -2.345
_refine_diff_density_rms         0.234
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         1915
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0323
_refine_ls_R_factor_gt           0.0292
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0564P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0761
_refine_ls_wR_factor_ref         0.0777
_reflns_number_gt                1787
_reflns_number_total             1915
_reflns_threshold_expression     >I>2\s(I)
_cod_data_source_file            b702569f.txt
_cod_data_source_block           06mz278m
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        1487.8(3)
_cod_original_sg_symbol_H-M      Pnma
_cod_database_code               7202836