Solvent-induced assembly of two helical Eu(III) metal-organic frameworks and fluorescence sensing activities towards nitrobenzene and Cu 2+ ions
Ma, Ranran; Chen, Zhiwei; Wang, Suna; Yao, Qingxia; Li, Yunwu; Lu, Jing; Li, Dacheng; Dou, Jianmin; Journal of Solid State Chemistry 252 (2017) 142–151; doi:10.1016/j.jssc.2017.05.018

data_1560429
_publ_section_title
;
 Solvent-induced assembly of two helical Eu(III) metal-organic frameworks
 and fluorescence sensing activities towards nitrobenzene and Cu 2+ ions
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              142
_journal_page_last               151
_journal_paper_doi               10.1016/j.jssc.2017.05.018
_journal_volume                  252
_journal_year                    2017
_chemical_formula_sum            'C24 H18 Eu N O10'
_chemical_formula_weight         632.35
_space_group_IT_number           148
_space_group_name_Hall           '-R 3'
_space_group_name_H-M_alt        'R -3 :H'
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_H-M   'R -3 :H'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            18
_cell_length_a                   39.982(3)
_cell_length_b                   39.982(3)
_cell_length_c                   9.0356(8)
_cell_measurement_reflns_used    4361
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      23.496
_cell_measurement_theta_min      2.544
_cell_volume                     12508.8(17)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0562
_diffrn_reflns_av_sigmaI/netI    0.0583
_diffrn_reflns_limit_h_max       47
_diffrn_reflns_limit_h_min       -42
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -47
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            19065
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.33
_exptl_absorpt_coefficient_mu    2.307
_exptl_absorpt_correction_T_max  0.7693
_exptl_absorpt_correction_T_min  0.5256
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.511
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cluster
_exptl_crystal_F_000             5616
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         2.238
_refine_diff_density_min         -0.687
_refine_diff_density_rms         0.171
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     327
_refine_ls_number_reflns         4904
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0610
_refine_ls_R_factor_gt           0.0429
_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^)+(0.0861P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1309
_refine_ls_wR_factor_ref         0.1396
_reflns_number_gt                3638
_reflns_number_total             4904
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            JSSC-2017-252-142.cif
_cod_data_source_block           150621g
_cod_original_cell_volume        12508.9(18)
_cod_original_sg_symbol_H-M      'R-3   '
_cod_database_code               1560429