Clathrates of TETROL: selective inclusion of methylcyclohexanones in their energetically unfavorable axial methyl conformations
B. Barton; M. R. Caira; E. C. Hosten; C. W. McCleland; S. Weitz; Chem.Commun. 50 (2014) 13353–; doi:10.1039/C4cc06826B

data_7115860
_publ_section_title
;
 Clathrates of TETROL: selective inclusion of methylcyclohexanones in
 their energetically unfavorable axial methyl conformations
;
_journal_name_full               Chem.Commun.
_journal_page_first              13353
_journal_paper_doi               10.1039/C4cc06826B
_journal_volume                  50
_journal_year                    2014
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C28 H26 O4, C7 H12 O1'
_chemical_formula_sum            'C35 H38 O5'
_chemical_formula_weight         538.65
_chemical_melting_point          421
_chemical_name_common            none
_chemical_name_systematic
; 
 (+)-(2R,3R)-1,1,4,4-tetraphenylbutane-1,2,3,4-tetraol/
4-methylcyclohexanone (1:1)
;
_space_group_IT_number           1
_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                79.296(6)
_cell_angle_beta                 68.813(5)
_cell_angle_gamma                65.825(5)
_cell_formula_units_Z            1
_cell_length_a                   8.181(2)
_cell_length_b                   9.952(3)
_cell_length_c                   10.163(3)
_cell_measurement_reflns_used    2417
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.0
_cell_measurement_theta_min      2.88
_cell_volume                     703.2(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker Apex2'
_computing_data_reduction        'Bruker SAINT, SADABS and XPREP'
_computing_molecular_graphics
;
Mercury (Macrae at al., 2006) and POV-RAY (Cason, 2003)
;
_computing_publication_material  'PLATON (Spek, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean n/a
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.952
_diffrn_measurement_device_type  'Bruker Apex Duo diffractometer'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0925
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            9415
_diffrn_reflns_theta_full        27.14
_diffrn_reflns_theta_max         27.14
_diffrn_reflns_theta_min         2.15
_diffrn_standards_decay_%        n/a
_diffrn_standards_interval_count n/a
_diffrn_standards_interval_time  n/a
_diffrn_standards_number         n/a
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6189
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.272
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             288
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.259
_refine_diff_density_min         -0.249
_refine_diff_density_rms         0.061
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -2.1(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.945
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     366
_refine_ls_number_reflns         9403
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.945
_refine_ls_R_factor_all          0.0791
_refine_ls_R_factor_gt           0.0515
_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^)+(0.0540P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1269
_refine_ls_wR_factor_ref         0.1338
_reflns_number_gt                5729
_reflns_number_total             9403
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc06826b2.cif
_cod_data_source_block           c:\ntwin5
_cod_original_cell_volume        703.1(3)
_cod_original_sg_symbol_H-M      P1
_cod_database_code               7115860