Bis[cyclic (alkyl)(amino)carbene] isomers: Stable trans-bis(CAAC) versus facile olefin formation for cis-bis(CAAC)
Puerta Lombardi, Braulio M.; Pezoulas, Ethan R.; Suvinen, Roope A.; Harrison, Alexander; Dubrawski, Zachary S.; Gelfand, Benjamin S.; Tuononen, Heikki M.; Roesler, Roland; Chemical Communications  (2022) –; doi:10.1039/D2CC01476A

data_7130118
_publ_section_title
;
 Bis[cyclic (alkyl)(amino)carbene] isomers: Stable trans-bis(CAAC) versus
 facile olefin formation for cis-bis(CAAC)
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D2CC01476A
_journal_year                    2022
_chemical_formula_moiety         'C40 H60 N2 O'
_chemical_formula_sum            'C40 H60 N2 O'
_chemical_formula_weight         584.90
_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   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2021-07-06
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-12-27 deposited with the CCDC.	2022-04-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.825(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.5644(14)
_cell_length_b                   18.697(2)
_cell_length_c                   16.3994(19)
_cell_measurement_reflns_used    9951
_cell_measurement_temperature    173.15
_cell_measurement_theta_max      27.17
_cell_measurement_theta_min      2.33
_cell_volume                     3527.6(7)
_computing_cell_refinement       'SAINT V8.40A (?, 2016)'
_computing_data_reduction        'SAINT V8.40A (?, 2016)'
_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      173.15
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_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  0.0683
_diffrn_reflns_av_unetI/netI     0.0518
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            45584
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.521
_diffrn_reflns_theta_min         1.657
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.065
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6941
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0613 before and 0.0540 after correction. The Ratio of minimum to maximum transmission is 0.9309. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.101
_exptl_crystal_description       block
_exptl_crystal_F_000             1288
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.196
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     400
_refine_ls_number_reflns         8120
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0923
_refine_ls_R_factor_gt           0.0490
_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^)+(0.0488P)^2^+0.7264P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1041
_refine_ls_wR_factor_ref         0.1233
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5137
_reflns_number_total             8120
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2cc01476a2.cif
_cod_data_source_block           mo_20201121_biscaaccuo_0m
_cod_original_cell_volume        3527.5(7)
_cod_database_code               7130118
_shelx_shelxl_version_number     2014/7
_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.a Ternary CH refined with riding coordinates:
 C7(H7), C12(H12), C24(H24), C27(H27), C36(H36), C39(H39)
2.b Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C3(H3A,H3B), C5(H5A,H5B), C6(H6A,H6B), C8(H8A,H8B), C13(H13A,H13B)
2.c Aromatic/amide H refined with riding coordinates:
 C19(H19), C20(H20), C21(H21), C31(H31), C32(H32), C33(H33)
2.d Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C15(H15A,H15B,H15C), C16(H16A,H16B,
 H16C), C23(H23C,H23A,H23B), C25(H25A,H25B,H25C), C26(H26A,H26B,H26C), C28(H28A,
 H28B,H28C), C35(H35A,H35B,H35C), C37(H37A,H37B,H37C), C38(H38A,H38B,H38C),
 C40(H40A,H40B,H40C)
;
_shelx_res_checksum              17365
_olex2_submission_original_sample_id BisCAACH2O
_olex2_submission_special_instructions 'No special instructions were received'