Solvent Control in the Synthesis of 3,6-Bis(pyridin-3-yl)-1,2,4,5-tetrazine-Bridged Cadmium(II) and Zinc(II) Coordination Polymers
Matthew A. Withersby; Alexander J. Blake; Neil R. Champness; Paul A. Cooke; Peter Hubberstey; Wan-Sheung Li; Martin Schröder; Inorganic Chemistry 38 (1999) 2259–2266; doi:10.1021/ic980898h

data_4321993
_publ_section_title
;
 Solvent Control in the Synthesis of
 3,6-Bis(pyridin-3-yl)-1,2,4,5-tetrazine-Bridged Cadmium(II) and Zinc(II)
 Coordination Polymers
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2259
_journal_page_last               2266
_journal_paper_doi               10.1021/ic980898h
_journal_volume                  38
_journal_year                    1999
_chemical_formula_sum            'C19 H14 Cl2 N11 O6 Zn'
_chemical_formula_weight         628.68
_chemical_name_common            {[Zn2(mu-3,3-pytz)3(NO3)4](CH2Cl2)}n
_chemical_name_systematic
; 
3,6-bis(Pyrid-3-yl)1,2,4,5-tetrazine Zinc Nitrate Dichloromethane adduct 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_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                117.79(3)
_cell_angle_beta                 102.39(3)
_cell_angle_gamma                101.13(3)
_cell_formula_units_Z            2
_cell_length_a                   9.1110(18)
_cell_length_b                   12.474(3)
_cell_length_c                   13.171(3)
_cell_measurement_reflns_used    250
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2.5
_cell_volume                     1216.7(8)
_computing_cell_refinement       STADI4
_computing_data_collection       'STADI4 (Stoe & Cie, 1997a)'
_computing_data_reduction        'X-RED (Stoe & Cie, 1997b)'
_computing_molecular_graphics    'SHELXTL/PC (version 5.03)(Sheldrick, 1994)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.785
_diffrn_measured_fraction_theta_max 0.785
_diffrn_measurement_device_type  'Enraf Nonius FAST'
_diffrn_measurement_method       'area detector 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  0.0803
_diffrn_reflns_av_sigmaI/netI    0.1111
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            5217
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.86
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    1.291
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'deep pink'
_exptl_crystal_density_diffrn    1.716
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             634
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.608
_refine_diff_density_min         -0.537
_refine_diff_density_rms         0.141
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.947
_refine_ls_hydrogen_treatment    'riding model'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         3355
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.947
_refine_ls_R_factor_all          0.0582
_refine_ls_R_factor_gt           0.0452
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0507P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1164
_refine_ls_wR_factor_ref         0.1190
_reflns_number_gt                2554
_reflns_number_total             3355
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic980898h_6.cif
_cod_data_source_block           znpzpra
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'None' changed to 'none'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1673 2011-04-08 12:14:43Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0507P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0507P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 

The following automatic conversions were performed:

'_atom_sites_solution_secondary' value 'difference Fourier map' was
changed to 'difmap'.

'_atom_sites_solution_hydrogens' value 'geometrically placed' was
changed to 'geom'.

Automatic conversion script
Id: cif_fix_values 6452 2018-10-05 10:23:21Z andrius 
;
_cod_original_cell_volume        1216.7(4)
_cod_database_code               4321993