I<i>t</i>Oct (I<i>t</i>Octyl) - pushing the limits of I<i>t</i>Bu: highly hindered electron-rich N-aliphatic N-heterocyclic carbenes.
Rahman, Md Mahbubur; Meng, Guangrong; Bisz, Elwira; Dziuk, Błażej; Lalancette, Roger; Szostak, Roman; Szostak, Michal; Chemical science 14 (2023) 5141–5147; doi:10.1039/d3sc01006f

data_1568898
_publ_section_title
;
 I<i>t</i>Oct (I<i>t</i>Octyl) - pushing the limits of I<i>t</i>Bu: highly
 hindered electron-rich N-aliphatic N-heterocyclic carbenes.
;
_journal_issue                   19
_journal_name_full               'Chemical science'
_journal_page_first              5141
_journal_page_last               5147
_journal_paper_doi               10.1039/d3sc01006f
_journal_volume                  14
_journal_year                    2023
_chemical_formula_sum            'C19 H36 Cl Cu N2'
_chemical_formula_weight         391.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2023-02-01 deposited with the CCDC.	2023-04-17 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.351(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6916(6)
_cell_length_b                   13.5030(7)
_cell_length_c                   13.0909(6)
_cell_measurement_reflns_used    14984
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.994
_cell_measurement_theta_min      2.616
_cell_volume                     2233.67(19)
_computing_cell_refinement       'CrysAlisCCD (Oxford Diffraction Ltd., 2008)'
_computing_data_collection       'CrysAlisCCD (Oxford Diffraction Ltd., 2008)'
_computing_data_reduction        'CrysAlisCCD (Oxford Diffraction Ltd., 2008)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean '1024 x 1024 with blocks 2 x 2'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  Xcalibur
_diffrn_measurement_method       \w--scan
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0691
_diffrn_reflns_av_unetI/netI     0.1108
_diffrn_reflns_Laue_measured_fraction_full 0.999
_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       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            14984
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.994
_diffrn_reflns_theta_min         2.616
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.099
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.97394
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.164
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.352
_refine_diff_density_min         -0.223
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.824
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         4387
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.824
_refine_ls_R_factor_all          0.1333
_refine_ls_R_factor_gt           0.0458
_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^)+(0.0465P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0884
_refine_ls_wR_factor_ref         0.1057
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1951
_reflns_number_total             4387
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc01006f2.cif
_cod_data_source_block           BD315_a
_cod_depositor_comments
'Adding full bibliography for 1568897--1568901.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1568898
_shelx_shelxl_version_number     2014/7
_exptl_absorpt_special_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.57 (release 26-01-2010 CrysAlis171 .NET)
(compiled Jan 26 2010,14:36:55)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_shelx_res_checksum              53699
_shelx_hkl_checksum              38712