Synthesis and Synthetic Application of Chloro- and Bromofuroxans.
Matsubara, Ryosuke; Ando, Akihiro; Hasebe, Hayu; Kim, Hojin; Tsuneda, Takao; Hayashi, Masahiko; The Journal of organic chemistry 85 (2020) 5959–5972; doi:10.1021/acs.joc.0c00326

data_4038250
_publ_section_title
;
 Synthesis and Synthetic Application of Chloro- and Bromofuroxans.
;
_journal_issue                   9
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              5959
_journal_page_last               5972
_journal_paper_doi               10.1021/acs.joc.0c00326
_journal_volume                  85
_journal_year                    2020
_chemical_formula_sum            'C8 H5 Cl N2 O3'
_chemical_formula_weight         212.59
_chemical_name_common            furoxan
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 92.046(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.5586(13)
_cell_length_b                   7.4628(14)
_cell_length_c                   8.5758(17)
_cell_measurement_reflns_used    1212
_cell_measurement_temperature    90.(2)
_cell_measurement_theta_max      27.4883
_cell_measurement_theta_min      2.3764
_cell_volume                     419.48(14)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_molecular_graphics    'shelXle (C.B. Huebschle, rev 833)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      90.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_source         'Bruker TXS fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_unetI/netI     0.0501
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2452
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         2.38
_diffrn_source                   'rotating-anode X-ray tube'
_diffrn_source_type              'Bruker Turbo X-ray Source'
_exptl_absorpt_coefficient_mu    0.434
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.683
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             216
_exptl_crystal_size_max          0.067
_exptl_crystal_size_mid          0.039
_exptl_crystal_size_min          0.019
_refine_diff_density_max         0.274
_refine_diff_density_min         -0.219
_refine_ls_abs_structure_details
;

Flack x determined using 564 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.03(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1663
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0345
_refine_ls_R_factor_gt           0.0312
_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^)+(0.0375P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0734
_refine_ls_wR_factor_ref         0.0760
_reflns_number_gt                1555
_reflns_number_total             1663
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c00326_si_004.cif
_cod_data_source_block           HH121_3a
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 4038245--4038253.cif.
;
_cod_database_code               4038250
_shelx_res_checksum              53234
_shelx_hkl_checksum              92882