Structure-reactivity correlations of the abnormal Beckmann reaction of dihydrolevoglucosenone oxime
Alhifthi, Amani; Harris, Benjamin L.; Goerigk, Lars; White, Jonathan; Williams, Spencer J.; Organic & Biomolecular Chemistry  (2017) –; doi:10.1039/C7OB02499A

data_7155984
_publ_section_title
;
 Structure-reactivity correlations of the abnormal Beckmann reaction of
 dihydrolevoglucosenone oxime
;
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_paper_doi               10.1039/C7OB02499A
_journal_year                    2017
_chemical_absolute_configuration rmad
_chemical_formula_sum            'C13 H14 Br N O3'
_chemical_formula_weight         312.16
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2017-10-06 deposited with the CCDC.
2017-11-14 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.680(4)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   19.6367(8)
_cell_length_b                   6.2680(2)
_cell_length_c                   20.8548(12)
_cell_measurement_reflns_used    3835
_cell_measurement_temperature    130.00(10)
_cell_measurement_theta_max      32.8200
_cell_measurement_theta_min      3.6320
_cell_volume                     2530.3(2)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    shelxt
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      130.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.2273
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.942
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0312
_diffrn_reflns_av_unetI/netI     0.0622
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.942
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            17227
_diffrn_reflns_point_group_measured_fraction_full 0.974
_diffrn_reflns_point_group_measured_fraction_max 0.866
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         36.611
_diffrn_reflns_theta_min         3.341
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    3.249
_exptl_absorpt_correction_T_max  0.853
_exptl_absorpt_correction_T_min  0.310
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
Numerical absorption correction based on gaussian integration over
            a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.639
_exptl_crystal_description       plate
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.533
_exptl_crystal_size_mid          0.279
_exptl_crystal_size_min          0.049
_refine_diff_density_max         0.858
_refine_diff_density_min         -1.120
_refine_diff_density_rms         0.119
_refine_ls_abs_structure_details
;
 Flack x determined using 2812 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.026(7)
_refine_ls_extinction_coef       0.0010(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     326
_refine_ls_number_reflns         10861
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0722
_refine_ls_R_factor_gt           0.0470
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0499P)^2^+0.2949P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1006
_refine_ls_wR_factor_ref         0.1216
_reflns_Friedel_coverage         0.718
_reflns_Friedel_fraction_full    0.947
_reflns_Friedel_fraction_max     0.780
_reflns_number_gt                8361
_reflns_number_total             10861
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ob02499a2.cif
_cod_data_source_block           cmpd2
_cod_database_code               7155984
_shelx_shelxl_version_number     2016/6
_chemical_oxdiff_usercomment     'Amani/SJW AM-1-31 bromobenzyl'
_oxdiff_exptl_absorpt_empirical_full_min 0.541
_oxdiff_exptl_absorpt_empirical_full_max 1.736
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              86125