Synthesis and spectroscopy of an oligophenyl based cruciform with remarkable pi-pi assisted folding.
Nehls, Benjamin S.; Galbrecht, Frank; Bilge, Askin; Brauer, David J.; Lehmann, Christian W.; Scherf, Ullrich; Farrell, Tony; Organic & biomolecular chemistry 3 (2005) 3213–3219; doi:10.1039/b508125d

data_7150253
_publ_section_title
;
 Synthesis and spectroscopy of an oligophenyl based cruciform with
 remarkable pi-pi assisted folding.
;
_journal_issue                   17
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3213
_journal_page_last               3219
_journal_paper_doi               10.1039/b508125d
_journal_volume                  3
_journal_year                    2005
_chemical_compound_source        'deuterated THF'
_chemical_formula_moiety         'C52 H58'
_chemical_formula_sum            'C52 H58'
_chemical_formula_weight         682.98
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 103.7280(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   26.1849(6)
_cell_length_b                   15.8390(4)
_cell_length_c                   10.0760(2)
_cell_measurement_reflns_used    22661
_cell_measurement_temperature    100
_cell_measurement_theta_max      31.51
_cell_measurement_theta_min      2.91
_cell_volume                     4059.57(16)
_computing_cell_refinement       'Denzo / Scalepack (Otwinowski 1997)'
_computing_data_collection       'Collect software (Nonius, 1998)'
_computing_data_reduction        'Denzo / Scalepack (Otwinowski 1997)'
_computing_molecular_graphics    'DIAMOND (Crystal Impact GbR, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'CCD \w-scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         '0.3 mm rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0966
_diffrn_reflns_av_sigmaI/netI    0.0498
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_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            57798
_diffrn_reflns_theta_full        27.75
_diffrn_reflns_theta_max         31.66
_diffrn_reflns_theta_min         3.03
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  1
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.117
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    none
_exptl_crystal_description       block
_exptl_crystal_F_000             1480
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.455
_refine_diff_density_min         -0.260
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         6800
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0946
_refine_ls_R_factor_gt           0.0636
_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^)+(0.0616P)^2^+3.7659P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1381
_refine_ls_wR_factor_ref         0.1529
_reflns_number_gt                4994
_reflns_number_total             6800
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b508125d.txt
_cod_data_source_block           4945
_cod_depositor_comments
;
The following automatic conversions were performed:
'_geom_angle_publ_flag' value 'N' changed to 'n' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (58
times).

'_geom_bond_publ_flag' value 'N' changed to 'n' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (29 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_Hall     C2/c
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7150253