Synthesis, structure, photoluminescence and magnetic properties of new 3-D lanthanide-pyridine-2,4,6-tricarboxylate frameworks
Li, Cui-Jin; Peng, Meng-Xia; Leng, Ji-Dong; Yang, Ming-Mei; Lin, Zhuojia; Tong, Ming-Liang; CrystEngComm 10 (2008) 1645–; doi:10.1039/b811883n

data_7202421
_publ_section_title
;
 Synthesis, structure, photoluminescence and magnetic properties of new
 3-D lanthanide-pyridine-2,4,6-tricarboxylate frameworks
;
_journal_issue                   11
_journal_name_full               CrystEngComm
_journal_page_first              1645
_journal_paper_doi               10.1039/b811883n
_journal_volume                  10
_journal_year                    2008
_chemical_formula_sum            'C16 H12 Dy2 N2 O16'
_chemical_formula_weight         813.28
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 101.353(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.7769(15)
_cell_length_b                   9.2174(6)
_cell_length_c                   22.3883(15)
_cell_measurement_reflns_used    6858
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      1.86
_cell_volume                     4406.0(5)
_computing_cell_refinement       'SAINT-PLUS, Ver. 6.0, 1997'
_computing_data_collection       'SMART, 1998.'
_computing_data_reduction        'SAINT-PLUS, Ver. 6.0, 1997'
_computing_molecular_graphics    'XP, Ver. 6.10, Bruker AXS Inc., 2000'
_computing_publication_material  'SHELXTL-Bruker AXS Inc., 1998'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.919
_diffrn_measured_fraction_theta_max 0.919
_diffrn_measurement_device_type  'Bruker Apex CCD'
_diffrn_measurement_method       '\w scan'
_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  0.0224
_diffrn_reflns_av_sigmaI/netI    0.0367
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6858
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    6.818
_exptl_absorpt_correction_T_max  0.7817
_exptl_absorpt_correction_T_min  0.7014
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2002)'
_exptl_crystal_colour            pale-orange
_exptl_crystal_density_diffrn    2.452
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rhombus
_exptl_crystal_F_000             3056
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.479
_refine_diff_density_min         -0.853
_refine_diff_density_rms         0.151
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     333
_refine_ls_number_reflns         3556
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0321
_refine_ls_R_factor_gt           0.0280
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0305P)^2^+23.3687P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0650
_refine_ls_wR_factor_ref         0.0672
_reflns_number_gt                3225
_reflns_number_total             3556
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b811883n.txt
_cod_data_source_block           dym
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7202421