Hydrogen bonded polymers and oligomers from metal salts and 18-crown-6
Steed, Jonathan W.; McCool, Brian J.; Junk, Peter C.; Journal of the Chemical Society, Dalton Transactions  (1998) 3417–; doi:10.1039/a805492d

data_7028020
_publ_section_title
;
 Hydrogen bonded polymers and oligomers from metal salts and 18-crown-6
;
_journal_issue                   20
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              3417
_journal_paper_doi               10.1039/a805492d
_journal_year                    1998
_chemical_formula_sum            'C18 H38 Eu F9 O19'
_chemical_formula_weight         881.44
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 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                 90.372(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.0790(2)
_cell_length_b                   22.3242(5)
_cell_length_c                   14.4355(2)
_cell_measurement_reflns_used    n/a
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      n/a
_cell_measurement_theta_min      n/a
_cell_volume                     3248.00(11)
_computing_cell_refinement       Denzo-smn
_computing_data_reduction        Denzo-smn
_computing_molecular_graphics    RES2INS
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       '2o phi frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.038
_diffrn_reflns_av_sigmaI/netI    0.0417
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            26806
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.36
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count n/a
_diffrn_standards_interval_time  n/a
_diffrn_standards_number         n/a
_exptl_absorpt_coefficient_mu    2.058
_exptl_absorpt_correction_type   Scalepack
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.803
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1768
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.810
_refine_diff_density_min         -1.638
_refine_diff_density_rms         0.107
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     442
_refine_ls_number_reflns         6023
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0314
_refine_ls_R_factor_gt           0.0287
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0325P)^2^+4.8646P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0747
_refine_ls_wR_factor_ref         0.0763
_reflns_number_gt                5631
_reflns_number_total             6023
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d805492sup1.cif
_cod_data_source_block           eu18trif
_cod_original_sg_symbol_H-M      P21/a
_cod_database_code               7028020