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_7202417
_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 H15 N2 O17.5 Sm2'
_chemical_formula_weight         816.00
_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                 103.0610(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   22.3162(11)
_cell_length_b                   9.3759(5)
_cell_length_c                   22.4546(12)
_cell_measurement_reflns_used    17304
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.00
_cell_measurement_theta_min      1.87
_cell_volume                     4576.7(4)
_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 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0281
_diffrn_reflns_av_sigmaI/netI    0.0264
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            17304
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    5.174
_exptl_absorpt_correction_T_max  0.7534
_exptl_absorpt_correction_T_min  0.6126
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2002)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.369
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cuboid
_exptl_crystal_F_000             3112
_exptl_crystal_size_max          0.11
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.06
_refine_diff_density_max         1.404
_refine_diff_density_min         -0.859
_refine_diff_density_rms         0.131
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.108
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     344
_refine_ls_number_reflns         4485
_refine_ls_number_restraints     33
_refine_ls_restrained_S_all      1.109
_refine_ls_R_factor_all          0.0288
_refine_ls_R_factor_gt           0.0269
_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^)+(0.0249P)^2^+31.6226P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0609
_refine_ls_wR_factor_ref         0.0618
_reflns_number_gt                4292
_reflns_number_total             4485
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b811883n.txt
_cod_data_source_block           smm
_cod_original_sg_symbol_H-M      C2/c
_cod_original_formula_sum        'C16 H15 N2 O17.50 Sm2'
_cod_database_code               7202417