Facile access to novel 1,2,4-oxadiazinan-5-ones via [3 + 3] cycloaddition of in situ generated azaoxyallyl cations with nitrones
Zhao, Hong-Wu; Zhao, Yu-Di; Liu, Yue-Yang; Zhao, Li-Jiao; Feng, Ning-Ning; Pang, Hai-Liang; Chen, Xiao-Qin; Song, Xiu-Qing; Du, Juan; RSC Advances 7 (2017) 12916–; doi:10.1039/C6RA27440D

data_7236287
_publ_section_title
;
 Facile access to novel 1,2,4-oxadiazinan-5-ones via [3 + 3] cycloaddition
 of in situ generated azaoxyallyl cations with nitrones
;
_journal_issue                   21
_journal_name_full               'RSC Advances'
_journal_page_first              12916
_journal_paper_doi               10.1039/C6RA27440D
_journal_volume                  7
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C24 H23 Cl N2 O3'
_chemical_formula_sum            'C24 H23 Cl N2 O3'
_chemical_formula_weight         422.89
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-06-14
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_audit_update_record
;
2016-09-18 deposited with the CCDC.
2017-02-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   22.150(4)
_cell_length_b                   5.9700(10)
_cell_length_c                   15.611(3)
_cell_measurement_reflns_used    6330
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.2
_cell_volume                     2064.3(6)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b42 (Rigaku, 2015)'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b42 (Rigaku, 2015)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b42 (Rigaku, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector                 PILT
_diffrn_detector_area_resol_mean 5.8140
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_details
;
scan:
	Number of images: 360
	           Slice: -105.0000 - 75.0000
	     Image width: 0.5000
	        Exp time: 4.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 0.0000
	             XTD: 44.9397
	          2theta: -15.0895
scan:
	Number of images: 300
	           Slice: -105.0000 - 45.0000
	     Image width: 0.5000
	        Exp time: 4.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 90.0000
	             XTD: 44.9397
	          2theta: -15.0895
scan:
	Number of images: 200
	           Slice: -105.0000 - -5.0000
	     Image width: 0.5000
	        Exp time: 4.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 180.0000
	             XTD: 44.9397
	          2theta: -15.0895
;
_diffrn_measurement_device
;
AFC10: Fixed Chi 2 circle
;
_diffrn_measurement_device_type  'Rigaku Pilatus 200K'
_diffrn_measurement_method       '\w scans'
_diffrn_measurement_specimen_support Fiber
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      0.035254
_diffrn_orient_matrix_UB_12      -0.142217
_diffrn_orient_matrix_UB_13      -0.081174
_diffrn_orient_matrix_UB_21      0.061414
_diffrn_orient_matrix_UB_22      0.017696
_diffrn_orient_matrix_UB_23      -0.004331
_diffrn_orient_matrix_UB_31      0.008636
_diffrn_orient_matrix_UB_32      -0.020333
_diffrn_orient_matrix_UB_33      0.039374
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0245
_diffrn_reflns_av_unetI/netI     0.0182
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            19944
_diffrn_reflns_point_group_measured_fraction_full 0.978
_diffrn_reflns_point_group_measured_fraction_max 0.969
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.501
_diffrn_reflns_theta_min         3.193
_diffrn_source                   'Rotating Anode'
_diffrn_source_current           24.0
_diffrn_source_power             1.2
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.214
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.941
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.361
_exptl_crystal_description       Prism
_exptl_crystal_F_000             888
_exptl_crystal_preparation       Fiber
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.204
_refine_diff_density_min         -0.150
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details
;
 Flack x determined using 2043 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.009(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         4605
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0231
_refine_ls_R_factor_gt           0.0221
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0363P)^2^+0.2539P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0583
_refine_ls_wR_factor_ref         0.0588
_reflns_Friedel_coverage         0.877
_reflns_Friedel_fraction_full    0.956
_reflns_Friedel_fraction_max     0.941
_reflns_number_gt                4467
_reflns_number_total             4605
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ra27440d2.cif
_cod_data_source_block           m20160608e1
_cod_original_cell_volume        2064.2(6)
_cod_database_code               7236287
_shelx_estimated_absorpt_t_max   0.975
_shelx_estimated_absorpt_t_min   0.958
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C11(H11)
2.b Secondary CH2 refined with riding coordinates:
 C18(H18A,H18B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C6(H6), C13(H13), C14(H14), C16(H16),
 C17(H17), C20(H20), C21(H21), C22(H22), C23(H23), C24(H24)
2.d Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C), C9(H9A,H9B,H9C)
;
_shelx_res_checksum              31574
_shelx_shelxl_version_number     2014/8
_olex2_submission_special_instructions 'No special instructions were received'