Coordination polymers with pyridine-2,4,6-tricarboxylic acid and alkaline-earth/lanthanide/transition metals: synthesis and X-ray structures
Das, Madhab C.; Ghosh, Sujit K.; Sañudo, E. Carolina; Bharadwaj, Parimal K.; Dalton Transactions  (2009) 1644–1658; doi:10.1039/b814066a

data_7000630
_publ_section_title
;
 Coordination polymers with pyridine-2,4,6-tricarboxylic acid and
 alkaline-earth/lanthanide/transition metals: synthesis and X-ray
 structures
;
_journal_issue                   9
_journal_name_full               'Dalton Transactions'
_journal_page_first              1644
_journal_page_last               1658
_journal_paper_doi               10.1039/b814066a
_journal_year                    2009
_chemical_formula_sum            'C16 H28 Mg3 N2 O24'
_chemical_formula_weight         705.33
_chemical_name_systematic
;
?
;
_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                74.722(6)
_cell_angle_beta                 74.713(6)
_cell_angle_gamma                79.032(7)
_cell_formula_units_Z            1
_cell_length_a                   7.274(5)
_cell_length_b                   8.955(4)
_cell_length_c                   11.032(5)
_cell_measurement_temperature    100(1)
_cell_measurement_theta_max      28.3
_cell_measurement_theta_min      2.4
_cell_volume                     663.0(6)
_computing_cell_refinement       'SAINT 6.45 ( Bruker, 2003)'
_computing_data_collection       'SMART 5.628 (Bruker, 2003)'
_computing_data_reduction        'SAINT 6.45 (Bruker, 2003)'
_computing_molecular_graphics    'Diamond 2.1e'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      100(1)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker SMART APEX'
_diffrn_measurement_method       /w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0203
_diffrn_reflns_av_sigmaI/netI    0.0429
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4259
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.38
_exptl_absorpt_coefficient_mu    0.229
_exptl_absorpt_correction_T_max  0.9731
_exptl_absorpt_correction_T_min  0.9643
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS 2.10 (Bruker 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.766
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       hexagonal
_exptl_crystal_F_000             366
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.678
_refine_diff_density_min         -0.435
_refine_diff_density_rms         0.174
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.109
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         3076
_refine_ls_number_restraints     13
_refine_ls_restrained_S_all      1.113
_refine_ls_R_factor_all          0.0905
_refine_ls_R_factor_gt           0.0677
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1718P)^2^+1.2720P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1758
_refine_ls_wR_factor_ref         0.2473
_reflns_number_gt                2463
_reflns_number_total             3290
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b814066a.txt
_cod_data_source_block           complex6
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_sg_symbol_H-M      P-1
_cod_database_code               7000630