Highly Rigid Crown Ether Fragments: Phenyl and Cyclohexyl Catechol Ethers
Bryan, Jeffrey C.; Lavis, Jérôme L.; Sachleben, Richard A.; Acta Crystallographica Section C 54 (1998) 1662–1666; doi:10.1107/S0108270198006490

data_2007823
_publ_section_title
;
 Highly Rigid Crown Ether Fragments: Phenyl and Cyclohexyl Catechol
 Ethers
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1662
_journal_page_last               1666
_journal_paper_doi               10.1107/S0108270198006490
_journal_volume                  54
_journal_year                    1998
_chemical_formula_moiety         'C18 H26 O4'
_chemical_formula_sum            'C18 H26 O4'
_chemical_formula_weight         306.40
_chemical_name_common
;
meso-bis-1,2-(2'-hydroxycyclohexyloxy)benzene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_type_scat_source
'International Tables for Crystallography  (Vol. C)'
_cell_angle_alpha                90
_cell_angle_beta                 97.548(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.6656(6)
_cell_length_b                   17.7913(14)
_cell_length_c                   10.7602(6)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    296
_cell_measurement_theta_max      14.2
_cell_measurement_theta_min      10.2
_cell_volume                     1644.6(2)
_computing_cell_refinement       'CAD4-PC (Enraf-Nonius, 1993)'
_computing_data_collection       'CAD4-PC (Enraf-Nonius, 1993)'
_computing_data_reduction        'XCAD4 (Harms, 1995)'
_computing_molecular_graphics    'SHELXTL (Siemens, 1990)'
_computing_publication_material  'PLATON (Spek, 1990)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measurement_device_type  'Nonius CAD4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.026
_diffrn_reflns_av_sigmaI/netI    0.032
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            6685
_diffrn_reflns_reduction_process
;
 ?
;
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         2
_diffrn_standards_decay_%        1
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.09
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.24
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prism
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.13
_refine_diff_density_min         -0.13
_refine_ls_extinction_coef       0.0402(2)
_refine_ls_extinction_method     'SHELXL-93 (Sheldrick, 1993)'
_refine_ls_goodness_of_fit_all   1.03
_refine_ls_goodness_of_fit_obs   1.09
_refine_ls_goodness_of_fit_ref   1.04
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     206
_refine_ls_number_reflns         2898
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.03
_refine_ls_R_factor_all          0.060
_refine_ls_R_factor_gt           0.033
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0321P)^2^+0.2944P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.090
_reflns_number_gt                2057
_reflns_number_total             2898
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fr1128.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' 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_H-M      'P 21/c'
_cod_database_code               2007823
_cod_database_fobs_code          2007823