Direct C-H magnesiation of thiophenes with a Mg-Mg-bonded compound
Yang, Li; Sun, Zhenzhou; Wang, Lin; Geng, Jianqi; Wu, Biao; Yang, Xiao-Juan; Chemical Communications  (2026) –; doi:10.1039/D6CC00381H

data_7135615
_publ_section_title
;
 Direct C-H magnesiation of thiophenes with an Mg-Mg-bonded compound.
;
_journal_issue                   27
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              7172
_journal_page_last               7175
_journal_paper_doi               10.1039/d6cc00381h
_journal_volume                  62
_journal_year                    2026
_chemical_formula_moiety         'C41 H61 K Mg N2 O3 S'
_chemical_formula_sum            'C41 H61 K Mg N2 O3 S'
_chemical_formula_weight         725.38
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2025-07-25
_audit_creation_method
;
Olex2 1.5
(compiled 2025.05.31 svn.r86d253d1 for OlexSys, GUI svn.r7254)
;
_audit_update_record
;
2026-01-16 deposited with the CCDC.	2026-03-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.887(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   17.3049(4)
_cell_length_b                   13.2052(3)
_cell_length_c                   36.1133(9)
_cell_measurement_reflns_used    29078
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      30.6090
_cell_measurement_theta_min      2.0530
_cell_volume                     8208.9(3)
_computing_cell_refinement       'CrysAlisPro 1.171.43.140a (Rigaku OD, 2024)'
_computing_data_collection       'CrysAlisPro 1.171.43.140a (Rigaku OD, 2024)'
_computing_data_reduction        'CrysAlisPro 1.171.43.140a (Rigaku OD, 2024)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.00(10)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.841
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w     12.00  56.00   0.50    0.30    --   -7.17  38.00 -90.00   88
  2  \w    -11.00  76.00   0.50    0.30    --    3.34  57.00  30.00  174
  3  \w    -34.00  -9.00   0.50    0.30    --   -7.17 -38.00  60.00   50
  4  \w     16.00  76.00   0.50    0.30    --    3.34  38.00 150.00  120
  5  \w    -17.00  33.00   0.50    0.30    --    3.34 -99.00  60.00  100
  6  \w     -9.00  31.00   0.50    0.30    --    3.34 -99.00-120.00   80
  7  \w    -11.00  76.00   0.50    0.30    --    3.34  57.00-120.00  174
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy R, DW system, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0169394500
_diffrn_orient_matrix_UB_12      0.0200636500
_diffrn_orient_matrix_UB_13      0.0171800000
_diffrn_orient_matrix_UB_21      0.0099741500
_diffrn_orient_matrix_UB_22      0.0448105500
_diffrn_orient_matrix_UB_23      -0.0092121000
_diffrn_orient_matrix_UB_31      -0.0362250000
_diffrn_orient_matrix_UB_32      0.0217131000
_diffrn_orient_matrix_UB_33      0.0031800000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0508
_diffrn_reflns_av_unetI/netI     0.0380
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.841
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       52
_diffrn_reflns_limit_l_min       -50
_diffrn_reflns_number            55837
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.841
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.891
_diffrn_reflns_theta_min         2.058
_diffrn_source                   'Rotating-anode X-ray tube'
_diffrn_source_type              'Rigaku (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.233
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.84573
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.140a (Rigaku Oxford Diffraction, 2024)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear light orange'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    orange
_exptl_crystal_density_diffrn    1.174
_exptl_crystal_description       block
_exptl_crystal_F_000             3136
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.440
_refine_diff_density_min         -0.419
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     453
_refine_ls_number_reflns         10910
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0643
_refine_ls_R_factor_gt           0.0485
_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^)+(0.0594P)^2^+9.8503P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1222
_refine_ls_wR_factor_ref         0.1299
_reflns_Friedel_coverage         0.000
_reflns_number_gt                8572
_reflns_number_total             10910
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d6cc00381h2.cif
_cod_data_source_block           yangli_20250328_1_auto
_cod_depositor_comments
'Adding full bibliography for 7135613--7135622.cif.'
_cod_database_code               7135615
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         'C H O N Mg K'
_chemical_oxdiff_usercomment     'C H O N Mg K'
_shelx_estimated_absorpt_t_max   0.977
_shelx_estimated_absorpt_t_min   0.973
_reflns_odcompleteness_completeness 99.94
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C11(H11), C14(H14), C23(H23), C26(H26), C30(H30)
2.b Secondary CH2 refined with riding coordinates:
 C34(H34A,H34B), C35(H35A,H35B), C36(H36A,H36B), C37(H37A,H37B), C38(H38A,
 H38B), C39(H39A,H39B), C40(H40A,H40B), C41(H41A,H41B)
2.c Aromatic/amide H refined with riding coordinates:
 C7(H7), C8(H8), C9(H9), C19(H19), C20(H20), C21(H21), C31(H31)
2.d Idealised Me refined as rotating group:
 C3(H3A,H3B,H3C), C4(H4A,H4B,H4C), C12(H12A,H12B,H12C), C13(H13A,H13B,H13C),
 C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C24(H24A,H24B,H24C), C25(H25A,H25B,
 H25C), C27(H27A,H27B,H27C), C28(H28A,H28B,H28C), C33(H33A,H33B,H33C)
;
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.334
_oxdiff_exptl_absorpt_empirical_full_min 0.719