ds-Block metal ions catalyzed decarboxylation of pyrazine-2,3,5,6-tetracarboxylic acid and the complexes obtained from hydrothermal reactions and novel water clusters
Yang, Ai-Hong; Quan, Ying-Ping; Gao, Hong-Ling; Fang, Su-Rong; Zhang, Yan-Ping; Zhao, Li-Hua; Cui, Jian-Zhong; Wang, Jian-Hui; Shi, Wei; Cheng, Peng; CrystEngComm 11 (2009) 2719–; doi:10.1039/b911939f

data_7201449
_publ_section_title
;
 ds-Block metal ions catalyzed decarboxylation of
 pyrazine-2,3,5,6-tetracarboxylic acid and the complexes obtained from
 hydrothermal reactions and novel water clusters
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              2719
_journal_paper_doi               10.1039/b911939f
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C28 H24 N6 O12 Zn2'
_chemical_formula_weight         767.27
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 100.057(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.2844(11)
_cell_length_b                   20.105(2)
_cell_length_c                   7.6606(9)
_cell_measurement_reflns_used    4564
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      26.30
_cell_measurement_theta_min      2.45
_cell_volume                     1408.0(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      294(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0328
_diffrn_reflns_av_sigmaI/netI    0.0334
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            7998
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    1.785
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.601895
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.810
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             780
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.580
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2861
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0351
_refine_ls_R_factor_gt           0.0285
_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^)+(0.0376P)^2^+0.6635P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0714
_refine_ls_wR_factor_ref         0.0747
_reflns_number_gt                2490
_reflns_number_total             2861
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b911939f.txt
_cod_data_source_block           70203a
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_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 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value 'CONSTR' changed to
'constr' 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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'NONE' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7201449