Cu(II)-mediated tautomerization for the pyrazole-nitrile coupling reaction.
Hsieh, Chang-Chih; Chen, Chia-Wei; Chiang, Ming-Hsi; Horng, Yih-Chern; Dalton transactions (Cambridge, England : 2003) 54 (2025) 1334–1342; doi:10.1039/d4dt02904f

data_7717689
_publ_section_title
;
 Cu(II)-mediated tautomerization for the pyrazole-nitrile coupling
 reaction.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1334
_journal_page_last               1342
_journal_paper_doi               10.1039/d4dt02904f
_journal_volume                  54
_journal_year                    2025
_chemical_formula_sum            'C10 H12 Cl4 Cu N6 O8'
_chemical_formula_weight         549.61
_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-2019/1
_audit_update_record
;
2024-12-04 deposited with the CCDC.	2024-12-17 downloaded from the CCDC.
;
_cell_angle_alpha                81.015(2)
_cell_angle_beta                 84.024(2)
_cell_angle_gamma                68.617(2)
_cell_formula_units_Z            1
_cell_length_a                   7.0595(2)
_cell_length_b                   7.7575(2)
_cell_length_c                   9.7194(3)
_cell_measurement_reflns_used    3333
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.54
_cell_measurement_theta_min      2.84
_cell_volume                     488.91(3)
_computing_cell_refinement       'SAINT (Bruker, 2012)'
_computing_data_collection       'APEX2 (Bruker AXS, 2012)'
_computing_data_reduction        'SAINT (Bruker, 2012)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 1999)'
_computing_publication_material  'SHELXL-2019/1 (Sheldrick, 2019)'
_computing_structure_refinement  'SHELXL-2019/1 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXL-2019/1 (Sheldrick, 2019)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0223
_diffrn_reflns_av_unetI/netI     0.0270
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            7716
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.705
_diffrn_reflns_theta_min         2.124
_exptl_absorpt_coefficient_mu    1.716
_exptl_absorpt_correction_T_max  0.837
_exptl_absorpt_correction_T_min  0.404
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2003)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.867
_exptl_crystal_description       block
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.827
_refine_diff_density_min         -0.567
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.880
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     134
_refine_ls_number_reflns         2501
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.880
_refine_ls_R_factor_all          0.0375
_refine_ls_R_factor_gt           0.0319
_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^)+(0.1000P)^2^+0.0800P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1073
_refine_ls_wR_factor_ref         0.1151
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2209
_reflns_number_total             2501
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4dt02904f2.cif
_cod_data_source_block           1a
_cod_depositor_comments
'Adding full bibliography for 7717689--7717702.cif.'
_cod_database_code               7717689
_shelx_shelxl_version_number     2019/1
_shelx_res_checksum              97849