Multicomponent Pyrazole Synthesis from Alkynes, Nitriles, and Ti Imidos via Oxidatively Induced N-N Bond Coupling.
Pearce, Adam J.; Harkins, Robin P.; Reiner, Benjamin R.; Wotal, Alexander C.; Dunscomb, Rachel J.; Tonks, Ian A.; Journal of the American Chemical Society  (2020) –; doi:10.1021/jacs.9b13173

data_4134210
_publ_section_title
;
 Multicomponent Pyrazole Synthesis from Alkynes, Nitriles, and Ti Imidos
 via Oxidatively Induced N-N Bond Coupling.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.9b13173
_journal_year                    2020
_chemical_formula_moiety         'C23H20N2Ti1Cl2 C3H3'
_chemical_formula_sum            'C26 H23 Cl2 N2 Ti'
_chemical_formula_weight         482.26
_chemical_name_common            19002
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                100.435(3)
_cell_angle_beta                 100.308(4)
_cell_angle_gamma                93.958(4)
_cell_formula_units_Z            2
_cell_length_a                   9.2324(8)
_cell_length_b                   9.9661(8)
_cell_length_c                   13.0708(11)
_cell_measurement_reflns_used    9077
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.506
_cell_measurement_theta_min      2.878
_cell_volume                     1157.27(17)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'APEX3, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'Shelxle-(Rev. 825) (Huebschle, C. B., 2011)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker Photon-II CMOS'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0771
_diffrn_reflns_av_unetI/netI     0.0802
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            24638
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.573
_diffrn_reflns_theta_min         2.255
_diffrn_source                   micro
_exptl_absorpt_coefficient_mu    0.617
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing, 1995'
_exptl_crystal_colour            Black
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_description       Block
_exptl_crystal_F_000             498
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.025
_exptl_transmission_factor_max   0.7461
_exptl_transmission_factor_min   0.4759
_refine_diff_density_max         0.911
_refine_diff_density_min         -0.807
_refine_diff_density_rms         0.112
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     282
_refine_ls_number_reflns         7083
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0976
_refine_ls_R_factor_gt           0.0570
_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^)+(0.0593P)^2^+1.5969P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1363
_refine_ls_wR_factor_ref         0.1679
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4902
_reflns_number_total             7083
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            19002_a.cif
_cod_data_source_block           19002_a
_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 
;
_cod_original_cell_volume        1157.26(17)
_cod_database_code               4134210
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.861
_shelx_estimated_absorpt_t_max   0.985
_shelx_res_checksum              75834
_shelx_hkl_checksum              92608