(1-Naphthyl)(trifluoromethyl) O-carboxy anhydride as a chiral derivatizing agent: eclipsed conformation enforced by hydrogen bonding.
Thillaye du Boullay, Olivier; Alba, Aurélie; Oukhatar, Fatima; Martin-Vaca, Blanca; Bourissou, Didier; Organic letters 10 (2008) 4669–4672; doi:10.1021/ol801930m

data_1504920
_publ_section_title
;
 (1-Naphthyl)(trifluoromethyl) O-carboxy anhydride as a chiral
 derivatizing agent: eclipsed conformation enforced by hydrogen bonding.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              4669
_journal_page_last               4672
_journal_paper_doi               10.1021/ol801930m
_journal_volume                  10
_journal_year                    2008
_chemical_absolute_configuration syn
_chemical_formula_sum            'C21 H18 F3 N O2'
_chemical_formula_weight         373.36
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 90.428(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.5521(11)
_cell_length_b                   11.1926(15)
_cell_length_c                   9.6514(13)
_cell_measurement_reflns_used    3521
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.391
_cell_measurement_theta_min      2.382
_cell_volume                     923.8(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker CCD detector'
_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  0.0142
_diffrn_reflns_av_sigmaI/netI    0.0222
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            5396
_diffrn_reflns_theta_full        26.42
_diffrn_reflns_theta_max         26.42
_diffrn_reflns_theta_min         2.11
_exptl_absorpt_coefficient_mu    0.106
_exptl_absorpt_correction_T_max  0.9580
_exptl_absorpt_correction_T_min  0.9081
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker-AXS)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.342
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             388
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.4
_refine_diff_density_max         0.183
_refine_diff_density_min         -0.140
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     250
_refine_ls_number_reflns         3067
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0346
_refine_ls_R_factor_gt           0.0299
_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^)+(0.0384P)^2^+0.1073P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0719
_refine_ls_wR_factor_ref         0.0747
_reflns_number_gt                2788
_reflns_number_total             3067
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol801930m_si_003.cif
_cod_data_source_block           od04m
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1504920