Heptafluoroisopropyl diazomethane (i-C3F7CHN2): in situ generation and synthesis of pyrazoles
Mykhailiuk, Pavel K.; Org. Biomol. Chem.  (2017) –; doi:10.1039/C7OB01579H

data_7155764
_publ_section_title
;
 Heptafluoroisopropyl diazomethane (i-C3F7CHN2): in situ generation and
 synthesis of pyrazoles
;
_journal_name_full               'Org. Biomol. Chem.'
_journal_paper_doi               10.1039/C7OB01579H
_journal_year                    2017
_chemical_formula_sum            'C13 H5 Br F8 N2 O'
_chemical_formula_weight         437.10
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-06-23 deposited with the CCDC.
2017-07-14 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 110.362(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.2793(12)
_cell_length_b                   8.0744(4)
_cell_length_c                   12.2026(6)
_cell_measurement_temperature    100(2)
_cell_volume                     1503.75(17)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.1043
_diffrn_reflns_av_sigmaI/netI    0.0949
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            16423
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    2.829
_exptl_absorpt_correction_T_max  0.8715
_exptl_absorpt_correction_T_min  0.4840
_exptl_crystal_density_diffrn    1.931
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.493
_refine_diff_density_min         -1.216
_refine_diff_density_rms         0.133
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.986
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     230
_refine_ls_number_reflns         4357
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.986
_refine_ls_R_factor_all          0.1062
_refine_ls_R_factor_gt           0.0626
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0636P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1388
_refine_ls_wR_factor_ref         0.1628
_reflns_number_gt                2683
_reflns_number_total             4357
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ob01579h2.cif
_cod_data_source_block           t328
_cod_original_cell_volume        1503.75(15)
_cod_database_code               7155764