Regioselective Synthesis, NMR, and Crystallographic Analysis of N1-Substituted Pyrazoles.
Huang, Adrian; Wo, Kellie; Lee, So Yeun Christine; Kneitschel, Nika; Chang, Jennifer; Zhu, Kathleen; Mello, Tatsiana; Bancroft, Laura; Norman, Natalie J.; Zheng, Shao-Liang; The Journal of organic chemistry 82 (2017) 8864–8872; doi:10.1021/acs.joc.7b01006

data_4032801
_publ_section_title
;
 Regioselective Synthesis, NMR, and Crystallographic Analysis of
 N1-Substituted Pyrazoles.
;
_journal_issue                   17
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8864
_journal_page_last               8872
_journal_paper_doi               10.1021/acs.joc.7b01006
_journal_volume                  82
_journal_year                    2017
_chemical_formula_sum            'C8 H5 Br N4 O2'
_chemical_formula_weight         269.07
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 97.1767(16)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   3.77840(10)
_cell_length_b                   24.5524(6)
_cell_length_c                   9.8852(3)
_cell_measurement_reflns_used    7386
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.1
_cell_measurement_theta_min      2.65
_cell_volume                     909.85(4)
_computing_cell_refinement       'SAINT 8.34C (Bruker-AXS, 2014)'
_computing_data_collection       'APEX2 v2014.3.0 (Bruker-AXS, 2014)'
_computing_data_reduction        'SAINT 8.34C (Bruker-AXS, 2014)'
_computing_molecular_graphics    'Bruker SHELXTL (Sheldrick, 2015)'
_computing_publication_material  'Bruker SHELXTL (Sheldrick, 2015)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT-2014 (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type
;
Bruker D8 goniometer with CCD area detector  
;
_diffrn_measurement_method       'omega and phi scans'
_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  0.0269
_diffrn_reflns_av_unetI/netI     0.0190
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11382
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.199
_diffrn_reflns_theta_min         1.659
_exptl_absorpt_coefficient_mu    4.501
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.5819
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.964
_exptl_crystal_description       plate
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.407
_refine_diff_density_min         -0.303
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.152
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2009
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.152
_refine_ls_R_factor_all          0.0245
_refine_ls_R_factor_gt           0.0213
_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^)+(0.0163P)^2^+0.6199P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0451
_refine_ls_wR_factor_ref         0.0461
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1867
_reflns_number_total             2009
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b01006_si_001.cif
_cod_data_source_block           Lab-29-23
_cod_database_code               4032801
_shelx_estimated_absorpt_t_min   0.438
_shelx_estimated_absorpt_t_max   0.715
_shelxl_version_number           2014/6
_shelx_res_checksum              29245
_shelx_hkl_checksum              89413