Heterocalixarenes. Part 4. Synthesis of oxocalix[1]heterocycle[2]arenes: a unique H-bonding network in calix[1]benzimidazol-2-one[2]arene· 1/2 H2O †
Kumar, Subodh; Hundal, Geeta; Paul, Dharam; Hundal, Maninder Singh; Singh, Harjit; Journal of the Chemical Society, Perkin Transactions 1  (2000) 2295–; doi:10.1039/b000832j

data_7213270
_publ_section_title
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 Heterocalixarenes. Part 4. Synthesis of oxocalix[1]heterocycle[2]arenes:
 a unique H-bonding network in
 calix[1]benzimidazol-2-one[2]arene&#x00B7;&#x200A;1/2 H2O&#x200A;&#x2020;
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_journal_issue                   14
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 1'
_journal_page_first              2295
_journal_paper_doi               10.1039/b000832j
_journal_year                    2000
_chemical_formula_sum            'C20 H16 N2 O4'
_chemical_formula_weight         348.35
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 110.460(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.259(2)
_cell_length_b                   8.8650(10)
_cell_length_c                   15.943(2)
_cell_measurement_temperature    293(2)
_cell_volume                     1623.3(4)
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_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  0.0153
_diffrn_reflns_av_sigmaI/netI    0.0394
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2178
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.59
_exptl_absorpt_coefficient_mu    0.101
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_F_000             728
_refine_diff_density_max         0.116
_refine_diff_density_min         -0.126
_refine_diff_density_rms         0.030
_refine_ls_extinction_coef       0.0195(29)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_all   1.026
_refine_ls_goodness_of_fit_obs   1.084
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         1876
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_restrained_S_obs      1.084
_refine_ls_R_factor_all          0.0639
_refine_ls_R_factor_obs          0.0423
_refine_ls_shift/esd_max         0.034
_refine_ls_shift/esd_mean        0.005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0665P)^2^+0.3333P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1308
_refine_ls_wR_factor_obs         0.1137
_reflns_number_observed          1513
_reflns_number_total             2036
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            b000832jsup1.cif
_cod_data_source_block           cpd8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0665P)^2^+0.3333P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0665P)^2^+0.3333P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_database_code               7213270