Synthesis of tetrasubstituted 1-silyloxy-3-aminobutadienes and chemistry beyond Diels-Alder reactions
Xijian Li; Siyu Peng; Li Li; Yong Huang; Nature Communications 6 (2015) 6913–; doi:10.1038/ncomms7913

data_1548421
_publ_section_title
;
 Synthesis of tetrasubstituted 1-silyloxy-3-aminobutadienes and chemistry
 beyond Diels-Alder reactions
;
_journal_name_full               'Nature Communications'
_journal_page_first              6913
_journal_paper_doi               10.1038/ncomms7913
_journal_volume                  6
_journal_year                    2015
_chemical_formula_sum            'C26 H39 N O Si'
_chemical_formula_weight         409.67
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 111.769(8)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.2427(10)
_cell_length_b                   14.0437(5)
_cell_length_c                   13.5442(3)
_cell_measurement_reflns_used    9058
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      68.20
_cell_measurement_theta_min      6.60
_cell_volume                     2515.9(2)
_computing_cell_refinement       'CrystalClear-SM Auto 2.0 r4'
_computing_data_collection       'CrystalClear-SM 2.0 r4 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Auto 2.0 r4'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2009)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  'Rigaku Saturn944+ CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0588
_diffrn_reflns_av_unetI/netI     0.0586
_diffrn_reflns_Laue_measured_fraction_full 0.976
_diffrn_reflns_Laue_measured_fraction_max 0.972
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            15460
_diffrn_reflns_point_group_measured_fraction_full 0.976
_diffrn_reflns_point_group_measured_fraction_max 0.972
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.227
_diffrn_reflns_theta_min         6.578
_exptl_absorpt_coefficient_mu    0.924
_exptl_absorpt_correction_T_max  0.912
_exptl_absorpt_correction_T_min  0.667
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.082
_exptl_crystal_description       platelet
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.342
_refine_diff_density_min         -0.255
_refine_diff_density_rms         0.054
_refine_ls_extinction_coef       0.0068(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     269
_refine_ls_number_reflns         4482
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0797
_refine_ls_R_factor_gt           0.0575
_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^)+(0.0951P)^2^+0.5831P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1630
_refine_ls_wR_factor_ref         0.1852
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                3014
_reflns_number_total             4482
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ncomms7913-s3.cif
_cod_data_source_block           2
_cod_database_code               1548421
_shelxl_version_number           2013-2
_shelx_res_checksum              78024
_shelx_hkl_checksum              54373