Stabilization of Grignard reagents by a pillar[5]arene host - Schlenk equilibria and Grignard reactions.
Shen, Lingyi; Zhao, Yanxia; Dai, Dihua; Yang, Ying-Wei; Wu, Biao; Yang, Xiao-Juan; Chemical communications (Cambridge, England) 56 (2020) 1381–1384; doi:10.1039/c9cc08728a

data_7125913
_publ_section_title
;
 Stabilization of Grignard reagents by a pillar[5]arene host - Schlenk
 equilibria and Grignard reactions.
;
_journal_issue                   9
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              1381
_journal_page_last               1384
_journal_paper_doi               10.1039/c9cc08728a
_journal_volume                  56
_journal_year                    2020
_chemical_formula_moiety         'C24 H51 Mg2 O2, C45 H50 O10'
_chemical_formula_sum            'C69 H101 Mg2 O12'
_chemical_formula_weight         1171.11
_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'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2019-06-22
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-07-23 deposited with the CCDC.	2020-01-07 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 96.985(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.392(4)
_cell_length_b                   21.180(6)
_cell_length_c                   23.936(7)
_cell_measurement_reflns_used    9484
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      25.045
_cell_measurement_theta_min      2.156
_cell_volume                     6739(3)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      153.15
_diffrn_detector_area_resol_mean 'fine-focus sealed tube'
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0795
_diffrn_reflns_av_unetI/netI     0.0869
_diffrn_reflns_Laue_measured_fraction_full 0.987
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            41094
_diffrn_reflns_point_group_measured_fraction_full 0.987
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.320
_diffrn_reflns_theta_min         1.714
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.4591
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.1434 before and 0.0833 after correction.
The Ratio of minimum to maximum transmission is 0.6161.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.154
_exptl_crystal_density_meas      ?
_exptl_crystal_description       block
_exptl_crystal_F_000             2540
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.768
_refine_diff_density_min         -0.483
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     778
_refine_ls_number_reflns         12056
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.1677
_refine_ls_R_factor_gt           0.0976
_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^)+(0.1328P)^2^+17.2178P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2524
_refine_ls_wR_factor_ref         0.3098
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6623
_reflns_number_total             12056
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc08728a2.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               7125913
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.982
_shelx_estimated_absorpt_t_min   0.972
_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. Restrained distances
 C13-H13A = C13-H13B
 0.96 with sigma of 0.02
3. Uiso/Uaniso restraints and constraints
Uanis(C14) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
4. Others
 Fixed Sof: H3A(0.5) H3B(0.5)
5.a Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C3(H3A,H3B), C6(H6A,H6B), C7(H7A,H7B), C9(H9A,H9B),
 C10(H10A,H10B), C11(H11A,H11B), C14(H14A,H14B), C15(H15A,H15B), C17(H17A,H17B),
  C18(H18A,H18B), C19(H19A,H19B), C20(H20A,H20B), C21(H21A,H21B), C22(H22A,
 H22B), C23(H23A,H23B), C24(H24A,H24B), C33(H33A,H33B), C42(H42A,H42B),
 C51(H51A,H51B), C60(H60A,H60B), C69(H69A,H69B)
5.b Aromatic/amide H refined with riding coordinates:
 C28(H28), C31(H31), C37(H37), C40(H40), C46(H46), C49(H49), C55(H55),
 C58(H58), C64(H64), C67(H67)
5.c Idealised Me refined as rotating group:
 C4(H4A,H4B,H4C), C8(H8A,H8B,H8C), C12(H12A,H12B,H12C), C16(H16A,H16B,H16C),
 C25(H25A,H25B,H25C), C26(H26A,H26B,H26C), C34(H34A,H34B,H34C), C35(H35A,H35B,
 H35C), C43(H43A,H43B,H43C), C44(H44A,H44B,H44C), C52(H52A,H52B,H52C), C53(H53A,
 H53B,H53C), C61(H61A,H61B,H61C), C62(H62A,H62B,H62C)
;
_shelx_res_checksum              39032
_olex2_submission_special_instructions 'No special instructions were received'