Hydrosilane-Assisted Synthesis of Urea Derivatives from CO<sub>2</sub> and Amines.
Zhao, Yulei; Guo, Xuqiang; Si, Zhiyao; Hu, Yanan; Sun, Ying; Liu, Yunlin; Ji, Zhongyin; You, Jinmao; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.0c02032

data_4038849
_publ_section_title
;
 Hydrosilane-Assisted Synthesis of Urea Derivatives from CO<sub>2</sub>
 and Amines.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.0c02032
_journal_year                    2020
_chemical_formula_moiety         'C13 H12 N2 O'
_chemical_formula_sum            'C13 H12 N2 O'
_chemical_formula_weight         212.25
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2020-07-20
_audit_creation_method
;
Olex2 1.3
(compiled 2020.07.16 svn.r6f6c53a7 for OlexSys, GUI svn.r6139)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.1100(8)
_cell_length_b                   10.5470(9)
_cell_length_c                   11.7739(11)
_cell_measurement_reflns_used    1202
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.589
_cell_measurement_theta_min      2.593
_cell_volume                     1131.27(17)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2017/1 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0667
_diffrn_reflns_av_unetI/netI     0.0840
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6770
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.986
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.421
_diffrn_reflns_theta_min         2.593
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9880
_exptl_absorpt_correction_T_min  0.9630
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.246
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.253
_refine_diff_density_min         -0.248
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   -1(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.926
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         2706
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.926
_refine_ls_R_factor_all          0.1211
_refine_ls_R_factor_gt           0.0506
_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^)+(0.0586P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1037
_refine_ls_wR_factor_ref         0.1346
_reflns_Friedel_coverage         0.911
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.987
_reflns_number_gt                1406
_reflns_number_total             2706
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c02032_si_002.cif
_cod_data_source_block           180907f
_cod_database_code               4038849
_shelx_shelxl_version_number     2017/1
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 2(4)
 -1(4)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
3.a Riding coordinates:
 N002(H002), N003(H003)
3.b Aromatic/amide H refined with riding coordinates:
 C007(H007), C008(H008), C009(H009), C00A(H00A), C00B(H00B), C00C(H00C),
 C00D(H00D), C00E(H00E), C00F(H00F), C00G(H00G)
;
_shelx_res_checksum              70101
_shelx_hkl_checksum              87730
_olex2_submission_special_instructions 'No special instructions were received'