Enhancing luminescence properties of lanthanide(iii)/pyrimidine-4,6-dicarboxylato system by solvent-free approach.
Cepeda, Javier; Pérez-Yáñez, Sonia; Beobide, Garikoitz; Castillo, Oscar; García, José Ángel; Lanchas, Mónica; Luque, Antonio; Dalton transactions (Cambridge, England : 2003) 44 (2015) 6972–6986; doi:10.1039/c4dt03797a

data_7034314
_publ_section_title
;
 Enhancing luminescence properties of
 lanthanide(iii)/pyrimidine-4,6-dicarboxylato system by solvent-free
 approach.
;
_journal_issue                   15
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6972
_journal_page_last               6986
_journal_paper_doi               10.1039/c4dt03797a
_journal_volume                  44
_journal_year                    2015
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C6 H4 Eu N3 O8'
_chemical_formula_structural     'C6 H4 Eu N3 O8'
_chemical_formula_sum            'C6 H4 Eu N3 O8'
_chemical_formula_weight         398.08
_chemical_name_systematic
Poly[aqua(nitrato-k2O,O')(mu4-pyrimidine-4,6-dicarboxylato-k2N,O:k2N',O':k2O,O'':kO''')europium(III)]
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_audit_update_record
;
2015-02-06 deposited with the CCDC.
2015-03-06 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 97.127(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5841(2)
_cell_length_b                   12.0772(2)
_cell_length_c                   9.4047(2)
_cell_measurement_reflns_used    7007
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      73.14
_cell_measurement_theta_min      5.99
_cell_volume                     967.47(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET)
(compiled Aug  3 2011,13:03:54)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET)
(compiled Aug  3 2011,13:03:54)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET)
(compiled Aug  3 2011,13:03:54)
;
_computing_molecular_graphics    'Ortep-3 (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Sir92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'SuperNova, Single source at offset), Atlas'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54180
_diffrn_reflns_av_R_equivalents  0.0342
_diffrn_reflns_av_unetI/netI     0.0280
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            7007
_diffrn_reflns_theta_full        73.14
_diffrn_reflns_theta_max         73.14
_diffrn_reflns_theta_min         5.99
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    46.924
_exptl_absorpt_correction_T_max  0.304
_exptl_absorpt_correction_T_min  0.063
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.15 (release 03-08-2011 CrysAlis171 .NET)
(compiled Aug  3 2011,13:03:54)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.733
_exptl_crystal_density_meas      2.74(1)
_exptl_crystal_density_method    flotation
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             752
_exptl_crystal_preparation       'Magnetic properties, Luminescent'
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.698
_refine_diff_density_min         -0.691
_refine_diff_density_rms         0.100
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         1922
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0209
_refine_ls_R_factor_gt           0.0199
_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^)+(0.0256P)^2^+0.2786P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0481
_refine_ls_wR_factor_ref         0.0487
_reflns_number_gt                1841
_reflns_number_total             1922
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4dt03797a2.cif
_cod_data_source_block           1-Eu
_cod_depositor_comments
'Adding full bibliography for 7034314--7034317.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7034314