Grignard-mediated reduction of 2,2,2-trichloro-1-arylethanones.
Essa, Ali H.; Lerrick, Reinner I.; Çiftçi, Eçe; Harrington, Ross W.; Waddell, Paul G.; Clegg, William; Hall, Michael J.; Organic & biomolecular chemistry 13 (2015) 5793–5803; doi:10.1039/c5ob00541h

data_7154456
_publ_section_title
;
 Grignard-mediated reduction of 2,2,2-trichloro-1-arylethanones.
;
_journal_issue                   20
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5793
_journal_page_last               5803
_journal_paper_doi               10.1039/c5ob00541h
_journal_volume                  13
_journal_year                    2015
_chemical_formula_moiety         'C16 H12 Cl N O4'
_chemical_formula_sum            'C16 H12 Cl N O4'
_chemical_formula_weight         317.72
_chemical_name_systematic
'((2R*,3R*)-2-chloro-3-(4-nitrophenyl)oxiran-2-yl)(p-tolyl)methanone '
_space_group_crystal_system      monoclinic
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_space_group_name_H-M_alt        'C 1 c 1'
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2013-08-06
_audit_creation_method
;
Olex2 1.2-alpha
(compiled 2013.07.19 svn.r2750, GUI svn.r4539)
;
_audit_update_record
;
2014-08-20 deposited with the CCDC.
2015-04-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 113.366(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.660(2)
_cell_length_b                   7.1579(10)
_cell_length_c                   14.548(2)
_cell_measurement_reflns_used    8225
_cell_measurement_temperature    120.0
_cell_measurement_theta_max      27.59
_cell_measurement_theta_min      2.83
_cell_volume                     1497.0(4)
_computing_cell_refinement       'Apex2 - SAINT (Bruker 2013)'
_computing_data_collection       'Apex2 (Bruker 2013)'
_computing_data_reduction        'Apex2 - SAINT (Bruker 2013)'
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
SHELX, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution
;
SHELX, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_diffrn_ambient_temperature      120.0
_diffrn_detector                 'Bruker Photon 100 Area Detector'
_diffrn_detector_area_resol_mean 10.24
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'multilayer optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0244
_diffrn_reflns_av_unetI/netI     0.0262
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9693
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.587
_diffrn_reflns_theta_min         2.834
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.272
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6594
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2012/1 (Bruker,2012) was used for absorption correction.
wR2(int) was 0.1048 before and 0.0487 after correction.
The Ratio of minimum to maximum transmission is 0.8844.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.410
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.49
_exptl_crystal_size_mid          0.44
_exptl_crystal_size_min          0.41
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details
;
 Classical Flack method preferred over Parsons because s.u. lower.
;
_refine_ls_abs_structure_Flack   0.00(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         3415
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0321
_refine_ls_R_factor_gt           0.0302
_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^)+(0.0377P)^2^+0.6003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0752
_refine_ls_wR_factor_ref         0.0770
_reflns_Friedel_coverage         0.971
_reflns_Friedel_fraction_full    0.986
_reflns_Friedel_fraction_max     0.968
_reflns_number_gt                3274
_reflns_number_total             3415
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ob00541h2.cif
_cod_data_source_block           mjh130018
_cod_depositor_comments
'Adding full bibliography for 7154444--7154457.cif.'
_cod_database_code               7154456
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C10(H10)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C6(H6), C7(H7), C12(H12), C13(H13), C15(H15), C16(H16)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C)
;
_shelx_res_checksum              53785
_shelxl_version_number           2013-3