Side Arm Twist on Zn-Catalyzed Hydrosilylative Reduction of CO2 to Formate and Methanol Equivalents with High Selectivity and Activity
Feng, Guoqin; Du, Chongyang; Xiang, Li; del Rosal, Iker; Li, Guangyu; Leng, Xuebing; Chen, Eugene Y.-X.; Maron, Laurent; Chen, Yaofeng; ACS Catalysis 8 (2018) 4710–; doi:10.1021/acscatal.8b01033

data_4515597
_publ_section_title
;
 Side Arm Twist on Zn-Catalyzed Hydrosilylative Reduction of CO2 to
 Formate and Methanol Equivalents with High Selectivity and Activity
;
_journal_issue                   5
_journal_name_full               'ACS Catalysis'
_journal_page_first              4710
_journal_paper_doi               10.1021/acscatal.8b01033
_journal_volume                  8
_journal_year                    2018
_chemical_formula_moiety         'C50 H86 N6 Zn2'
_chemical_formula_sum            'C50 H86 N6 Zn2'
_chemical_formula_weight         901.98
_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   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2016-10-21
_audit_creation_method
;
Olex2 1.2
(compiled 2016.09.09 svn.r3337 for OlexSys, GUI svn.r5227)
;
_cell_angle_alpha                90
_cell_angle_beta                 102.8100(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   21.7365(14)
_cell_length_b                   14.2049(10)
_cell_length_c                   20.3579(13)
_cell_measurement_reflns_used    8496
_cell_measurement_temperature    130
_cell_measurement_theta_max      28.727
_cell_measurement_theta_min      2.481
_cell_volume                     6129.4(7)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      130
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0311
_diffrn_reflns_av_unetI/netI     0.0346
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            31181
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         30.535
_diffrn_reflns_theta_min         1.726
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.814
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6449
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0486 before and 0.0386 after correction.
The Ratio of minimum to maximum transmission is 0.8644.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    0.977
_exptl_crystal_description       block
_exptl_crystal_F_000             1952
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.587
_refine_diff_density_min         -0.297
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         9345
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0581
_refine_ls_R_factor_gt           0.0434
_refine_ls_shift/su_max          0.023
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0781P)^2^+0.4308P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1203
_refine_ls_wR_factor_ref         0.1277
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7178
_reflns_number_total             9345
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cs8b01033_si_002.cif
_cod_data_source_block           L2ZnH
_cod_database_code               4515597
_shelx_estimated_absorpt_t_max   0.888
_shelx_estimated_absorpt_t_min   0.841
_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. Rigid bond restraints
 C17, C18
 with sigma for 1-2 distances of 0.005 and sigma for 1-3 distances of 0.005
3.a Ternary CH refined with riding coordinates:
 C8(H8), C11(H11), C20(H20), C23(H23)
3.b Secondary CH2 refined with riding coordinates:
 C6(H6A,H6B), C7(H7A,H7B)
3.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C16(H16), C17(H17), C18(H18)
3.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C5(H5A,H5B,H5C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C),
 C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C21(H21A,H21B,H21C), C22(H22A,H22B,
 H22C), C24(H24A,H24B,H24C), C25(H25A,H25B,H25C)
;
_shelx_res_checksum              57442
_shelx_hkl_checksum              53360
_shelx_fab_checksum              47983
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'