C2 symmetrical double chromophores: cooperativity effects in lanthanide ion complexation.
Pasini, Dario; Righetti, Pier Paolo; Zema, Michele; Organic & biomolecular chemistry 2 (2004) 1764–1769; doi:10.1039/b403494e

data_7150380
_publ_section_title
;
 C2 symmetrical double chromophores: cooperativity effects in
 lanthanide ion complexation.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1764
_journal_page_last               1769
_journal_paper_doi               10.1039/b403494e
_journal_volume                  2
_journal_year                    2004
_chemical_formula_sum            'C36 H46 N2 O12'
_chemical_formula_weight         698.75
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                96.7(2)
_cell_angle_beta                 106.03(11)
_cell_angle_gamma                80.81(8)
_cell_formula_units_Z            1
_cell_length_a                   8.186(5)
_cell_length_b                   18.852(16)
_cell_length_c                   6.057(15)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      11.01
_cell_measurement_theta_min      4.93
_cell_volume                     884(2)
_computing_cell_refinement       'local software'
_computing_data_collection       'local software'
_computing_data_reduction        'local software'
_computing_molecular_graphics    'Ortep-3 (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Philips PW1100'
_diffrn_measurement_method       \w/2\q
_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  0.0732
_diffrn_reflns_av_sigmaI/netI    0.2359
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2418
_diffrn_reflns_theta_full        22.00
_diffrn_reflns_theta_max         22.00
_diffrn_reflns_theta_min         2.20
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.312
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.406
_refine_diff_density_min         -0.406
_refine_diff_density_rms         0.121
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         2163
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.3122
_refine_ls_R_factor_gt           0.1514
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1860P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3324
_refine_ls_wR_factor_ref         0.4208
_reflns_number_gt                729
_reflns_number_total             2163
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b403494e.txt
_cod_data_source_block           rig1
_cod_database_code               7150380