Enhanced enantioselectivity of 3-methylcyclohexanone by mixed diol host compounds
L.R.Nassimbeni; Hong Su; Tanith-Lee Curtin; Chem.Commun. 48 (2012) 8526–; doi:10.1039/c2cc34118b

data_7108183
_publ_section_title
;
 Enhanced enantioselectivity of 3-methylcyclohexanone by mixed diol host
 compounds
;
_journal_name_full               Chem.Commun.
_journal_page_first              8526
_journal_paper_doi               10.1039/c2cc34118b
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C44 H46 O4'
_chemical_formula_weight         638.81
_chemical_name_common
;1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol 3-
methylcyclohexanone clathrate
;
_chemical_name_systematic
;
1,1,6,6-tetraphenylhexa-2,4-diyne-1,6-diol
3-methylcyclohexanone clathrate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 94.0470(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.2924(4)
_cell_length_b                   17.7601(11)
_cell_length_c                   16.1586(10)
_cell_measurement_reflns_used    19426
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.40
_cell_measurement_theta_min      1.71
_cell_volume                     1801.28(19)
_computing_cell_refinement
'SAINT (7.60a, Bruker AXS Inc., Madison, WI, USA, 2006)'
_computing_data_collection
'SAINT (7.60a, Bruker AXS Inc., Madison, WI, USA, 2006)'
_computing_data_reduction
'SAINT (7.60a, Bruker AXS Inc., Madison, WI, USA, 2006)'
_computing_molecular_graphics    'X-Seed (Barbour, 2001)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker Kappa Duo Apex II Diffractometer'
_diffrn_measurement_method       '0.5\% \f scans and \w 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  0.0438
_diffrn_reflns_av_sigmaI/netI    0.0324
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            19426
_diffrn_reflns_theta_full        28.40
_diffrn_reflns_theta_max         28.40
_diffrn_reflns_theta_min         1.71
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9868
_exptl_absorpt_correction_T_min  0.9847
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.178
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             684
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.408
_refine_diff_density_min         -0.452
_refine_diff_density_rms         0.041
_refine_ls_extinction_coef       none
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         4517
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0830
_refine_ls_R_factor_gt           0.0588
_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^)+(0.0548P)^2^+0.8376P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1379
_refine_ls_wR_factor_ref         0.1517
_reflns_number_gt                3260
_reflns_number_total             4517
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc34118b.txt
_cod_data_source_block           3
_cod_depositor_comments
;
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      P21/n
_cod_database_code               7108183