Aerobic Co-/ N-Hydroxysuccinimide-Catalyzed Oxidation of p-Tolylsiloxanes to p-Carboxyphenylsiloxanes: Synthesis of Functionalized Siloxanes as Promising Building Blocks for Siloxane-Based Materials.
Goncharova, Irina K.; Silaeva, Kseniia P.; Arzumanyan, Ashot V.; Anisimov, Anton A.; Milenin, Sergey A.; Novikov, Roman A.; Solyev, Pavel N.; Tkachev, Yaroslav V.; Volodin, Alexander D.; Korlyukov, Alexander A.; Muzafarov, Aziz M.; Journal of the American Chemical Society 141 (2019) 2143–2151; doi:10.1021/jacs.8b12600

data_4127912
_publ_section_title
;
 Aerobic Co-/ N-Hydroxysuccinimide-Catalyzed Oxidation of p-Tolylsiloxanes
 to p-Carboxyphenylsiloxanes: Synthesis of Functionalized Siloxanes as
 Promising Building Blocks for Siloxane-Based Materials.
;
_journal_issue                   5
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2143
_journal_page_last               2151
_journal_paper_doi               10.1021/jacs.8b12600
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C18 H22 O5 Si2'
_chemical_formula_sum            'C18 H22 O5 Si2'
_chemical_formula_weight         374.53
_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'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-11-07
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 103.2060(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   27.4926(9)
_cell_length_b                   9.3180(3)
_cell_length_c                   15.4357(5)
_cell_measurement_reflns_used    9801
_cell_measurement_temperature    120
_cell_measurement_theta_max      43.097
_cell_measurement_theta_min      2.314
_cell_volume                     3849.7(2)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_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  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      120
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0391
_diffrn_reflns_av_unetI/netI     0.0152
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       42
_diffrn_reflns_limit_h_min       -42
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            95575
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.138
_diffrn_reflns_theta_min         1.522
_diffrn_source                   'sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.208
_exptl_absorpt_correction_T_max  0.7505
_exptl_absorpt_correction_T_min  0.7143
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0736 before and 0.0576 after correction. The Ratio of minimum to maximum transmission is 0.9518. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.292
_exptl_crystal_description       plate
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.522
_refine_diff_density_min         -0.190
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     232
_refine_ls_number_reflns         7320
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0466
_refine_ls_R_factor_gt           0.0377
_refine_ls_shift/su_max          0.002
_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^+2.4062P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1016
_refine_ls_wR_factor_ref         0.1119
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6154
_reflns_number_total             7320
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b12600_si_004.cif
_cod_data_source_block           ai543
_cod_database_code               4127912
_shelxl_version_number           2014/6
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3A), C5(H5), C6(H6), C13(H13), C14(H14), C16(H16), C17(H17)
2.b Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C11(H11A,H11B,H11C)
2.c Idealised tetrahedral OH refined as rotating group:
 O3(H3), O4(H4)
;
_shelx_res_checksum              97677
_shelx_hkl_checksum              61024
_olex2_submission_special_instructions 'No special instructions were received'