S,S-1,2-Dicyclohexylethane-1,2-diol and its racemic compound: a striking exception to Wallach's rule
Patrick, Brian O.; Brock, Carolyn Pratt; Acta Crystallographica, Section B: Structural Science 62 (2006) 488–497; doi:10.1107/S0108768106000620

data_2105710
_publ_section_title
;
 S,S-1,2-Dicyclohexylethane-1,2-diol and its racemic compound:
 a striking exception to Wallach's rule
;
_journal_coden_ASTM              ASBSDK
_journal_coeditor_code           DE5024
_journal_issue                   3
_journal_name_full
;
 Acta Crystallographica, Section B: Structural Science
;
_journal_page_first              488
_journal_page_last               497
_journal_paper_doi               10.1107/S0108768106000620
_journal_volume                  62
_journal_year                    2006
_chemical_formula_moiety         'C14 H26 O2'
_chemical_formula_sum            'C14 H26 O2'
_chemical_formula_weight         226.35
_chemical_melting_point          420.15
_chemical_name_systematic        rac-1,2-dicyclohexylethane-1,2-diol
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method
;
SHELXL-97, macros written locally, and C. P. Brock
;
_cell_angle_alpha                90.
_cell_angle_beta                 104.64(2)
_cell_angle_gamma                90.
_cell_formula_units_Z            8
_cell_length_a                   23.153(5)
_cell_length_b                   11.852(3)
_cell_length_c                   10.926(2)
_cell_measurement_reflns_used    13065
_cell_measurement_temperature    295.0(10)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      1.7
_cell_volume                     2900.9(11)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT software (Nonius, 1998)'
_computing_data_reduction        'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'SHELXTL PC (Sheldrick, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
;
SIR92 (Altomare, Cascarano, Giacovazzo, Guagliardi, Burla,
Polidori & Camalli, 1994) in maXus (Mackay, Gilmore,
Edwards, Tremayne, Stewart & Shankland, 1998)
;
_diffrn_ambient_temperature      295.0(10)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Nonius Kappa-CCD diffractometer'
_diffrn_measurement_method       '\f and \w scans with 1.0\% steps'
_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  0.023
_diffrn_reflns_av_sigmaI/netI    0.042
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            4869
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         2.6
_diffrn_standards_decay_%        <1.
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.037
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description
;
Laths.  Largest faces are {100};  long direction is c.
;
_exptl_crystal_F_000             1008
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.14
_refine_diff_density_min         -0.12
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.13
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         2529
_refine_ls_number_restraints     64
_refine_ls_restrained_S_all      1.12
_refine_ls_R_factor_all          0.091
_refine_ls_R_factor_gt           0.068
_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^)+(0.11P)^2^+0.59P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.189
_refine_ls_wR_factor_ref         0.208
_reflns_number_gt                1942
_reflns_number_total             2529
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             2100481
_cod_data_source_file            de5024sup1.cif
_cod_data_source_block           k98064
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '147_C' was changed to '420.15' - it
was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'C1 2/c 1'
_cod_database_code               2105710