A novel synthesis of calix[4]thiophenes and calix[4]furans
Lee, Gon-Ann; Wang, Wen-Chieh; Shieh, Minghuey; Kuo, Ting-Shen; Chemical Communications 46 (2010) 5009–5011; doi:10.1039/c0cc00437e

data_7111705
_publ_section_title
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 A novel synthesis of calix[4]thiophenes and calix[4]furans
;
_journal_issue                   27
_journal_name_full               'Chemical Communications'
_journal_page_first              5009
_journal_page_last               5011
_journal_paper_doi               10.1039/c0cc00437e
_journal_volume                  46
_journal_year                    2010
_chemical_formula_moiety         'C52 H80 O4'
_chemical_formula_sum            'C52 H80 O4'
_chemical_formula_weight         769.16
_chemical_melting_point          272.0(5)
_chemical_name_common            octabutyl
_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                65.333(9)
_cell_angle_beta                 68.547(9)
_cell_angle_gamma                82.873(9)
_cell_formula_units_Z            2
_cell_length_a                   12.969(2)
_cell_length_b                   14.641(2)
_cell_length_c                   15.502(2)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     2488.2(7)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_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  0.0409
_diffrn_reflns_av_sigmaI/netI    0.0747
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            17381
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.54
_exptl_absorpt_coefficient_mu    0.063
_exptl_absorpt_correction_T_max  0.9907
_exptl_absorpt_correction_T_min  0.9718
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.027
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.529
_refine_diff_density_min         -0.365
_refine_diff_density_rms         0.087
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    fixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     493
_refine_ls_number_reflns         8630
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.1322
_refine_ls_R_factor_gt           0.0709
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1303P)^2^+0.1943P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1964
_refine_ls_wR_factor_ref         0.2457
_reflns_number_gt                4740
_reflns_number_total             8630
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0CC00437Esup1.cif
_cod_data_source_block           a9984a
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value '271.5-272.5' was changed to
'272.0(5)' - the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        2488.1(7)
_cod_database_code               7111705