Horning-crown macrocycles: novel hybrids of calixarenes and crown ethers.
Higham, Luke T.; Kreher, Ulf P.; Raston, Colin L.; Scott, Janet L.; Strauss, Christopher R.; Organic letters 6 (2004) 3261–3264; doi:10.1021/ol048921s

data_1507042
_publ_section_title
;
 Horning-crown macrocycles: novel hybrids of calixarenes and crown ethers.
;
_journal_issue                   19
_journal_name_full               'Organic letters'
_journal_page_first              3261
_journal_page_last               3264
_journal_paper_doi               10.1021/ol048921s
_journal_volume                  6
_journal_year                    2004
_chemical_formula_moiety         'C26 H28 O5'
_chemical_formula_sum            'C26 H28 O5'
_chemical_formula_weight         420.48
_chemical_name_systematic
; 
 3,4:15,16-dibenzo-5,8,11,14-tetraoxa-bicyclo[16.3.1]docosa-1(21),3,15,18(22),19-pentaen-22-ol 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.7408(4)
_cell_length_b                   17.4668(7)
_cell_length_c                   25.7256(12)
_cell_measurement_temperature    123(2)
_cell_volume                     4377.0(3)
_computing_cell_refinement       'Nonius collect'
_computing_data_collection       'Nonius collect'
_computing_data_reduction        'Nonius collect'
_computing_molecular_graphics    X-Seed
_computing_publication_material  ciftab
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Enraf Nonius Kappa CCD'
_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  0.2403
_diffrn_reflns_av_sigmaI/netI    0.2809
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            15537
_diffrn_reflns_theta_full        28.19
_diffrn_reflns_theta_max         28.19
_diffrn_reflns_theta_min         3.93
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1792
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.295
_refine_diff_density_min         -0.281
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.936
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         5262
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.936
_refine_ls_R_factor_all          0.2851
_refine_ls_R_factor_gt           0.0670
_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^)+(0.0455P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0983
_refine_ls_wR_factor_ref         0.1496
_reflns_number_gt                1762
_reflns_number_total             5262
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol048921ssi20040809_091408.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               1507042