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_4032786
_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_absolute_configuration rm
_chemical_formula_sum            'C12 H11 N3 O3'
_chemical_formula_weight         245.24
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.9557(3)
_cell_length_b                   26.4849(10)
_cell_length_c                   4.7920(2)
_cell_measurement_reflns_used    8127
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      66.3
_cell_measurement_theta_min      3.33
_cell_volume                     1136.62(7)
_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 0.967
_diffrn_measured_fraction_theta_max 0.967
_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         'I\mS microfocus tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0655
_diffrn_reflns_av_unetI/netI     0.0362
_diffrn_reflns_Laue_measured_fraction_full 0.967
_diffrn_reflns_Laue_measured_fraction_max 0.967
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            18053
_diffrn_reflns_point_group_measured_fraction_full 0.889
_diffrn_reflns_point_group_measured_fraction_max 0.889
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         66.698
_diffrn_reflns_theta_min         3.337
_exptl_absorpt_coefficient_mu    0.886
_exptl_absorpt_correction_T_max  0.8642
_exptl_absorpt_correction_T_min  0.7863
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.433
_exptl_crystal_description       plate
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.240
_exptl_crystal_size_mid          0.018
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.254
_refine_diff_density_min         -0.203
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details
;
 Flack x determined using 589 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.3(3)
_refine_ls_extinction_coef       0.0027(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         1790
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0496
_refine_ls_R_factor_gt           0.0445
_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^)+(0.0716P)^2^+0.1419P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1114
_reflns_Friedel_coverage         0.627
_reflns_Friedel_fraction_full    0.789
_reflns_Friedel_fraction_max     0.789
_reflns_number_gt                1625
_reflns_number_total             1790
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b01006_si_001.cif
_cod_data_source_block           Lab-33
_cod_database_code               4032786
_shelx_estimated_absorpt_t_min   0.816
_shelx_estimated_absorpt_t_max   0.991
_shelxl_version_number           2014/6
_shelx_res_checksum              1735
_shelx_hkl_checksum              83412