Controlled self-assembly of bis(crown)stilbenes into unusual bis-sandwich complexes: structure and stereoselective [2+2] photocycloaddition
Gromov, Sergey P.; Vedernikov, Artem I.; Lobova, Natalia A.; Kuz'mina, Lyudmila G.; Basok, Stepan S.; Strelenko, Yuri A.; Alfimov, Michael V.; Howard, Judith A. K.; New Journal of Chemistry 35 (2011) 724–; doi:10.1039/c0nj00780c

data_7052593
_publ_section_title
;
 Controlled self-assembly of bis(crown)stilbenes into unusual
 bis-sandwich complexes: structure and stereoselective [2+2]
 photocycloaddition
;
_journal_issue                   3
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              724
_journal_paper_doi               10.1039/c0nj00780c
_journal_volume                  35
_journal_year                    2011
_chemical_formula_sum            'C53 H76 Cl2 N2 O20'
_chemical_formula_weight         1132.06
_chemical_name_systematic
;
?
;
_space_group_IT_number           155
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'R 3 2"'
_symmetry_space_group_name_H-M   'R 3 2 :H'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            9
_cell_length_a                   21.0741(3)
_cell_length_b                   21.0741(3)
_cell_length_c                   33.4590(6)
_cell_measurement_temperature    100(2)
_cell_volume                     12868.9(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  Microstar
_diffrn_measurement_method       /W
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0421
_diffrn_reflns_av_sigmaI/netI    0.0338
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            14469
_diffrn_reflns_theta_full        68.34
_diffrn_reflns_theta_max         68.34
_diffrn_reflns_theta_min         3.58
_exptl_absorpt_coefficient_mu    1.659
_exptl_absorpt_correction_T_max  0.7544
_exptl_absorpt_correction_T_min  0.6538
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             5418
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.434
_refine_diff_density_min         -0.525
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.52(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     580
_refine_ls_number_reflns         4708
_refine_ls_number_restraints     400
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0647
_refine_ls_R_factor_gt           0.0628
_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^)+(0.1273P)^2^+12.5238P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1753
_refine_ls_wR_factor_ref         0.1790
_reflns_number_gt                4541
_reflns_number_total             4708
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0NJ00780C.TXT
_cod_data_source_block           1c+C3
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal' according
to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius 
;
_cod_original_sg_symbol_H-M      R32
_cod_database_code               7052593