Alane-Centered Ring Expansion of N-Heterocyclic Carbenes
Anker, Mathew D.; Colebatch, Annie L.; Iversen, Kalon J.; Wilson, David J. D.; Dutton, Jason L.; García, Lucía; Hill, Michael S.; Liptrot, David J.; Mahon, Mary F.; Organometallics 36 (2017) 1173–; doi:10.1021/acs.organomet.7b00056

data_4087164
_publ_section_title
;
 Alane-Centered Ring Expansion of N-Heterocyclic Carbenes
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1173
_journal_paper_doi               10.1021/acs.organomet.7b00056
_journal_volume                  36
_journal_year                    2017
_chemical_formula_moiety         'C44 H55 Al N4'
_chemical_formula_sum            'C44 H55 Al N4'
_chemical_formula_weight         666.90
_chemical_name_systematic
;
 ?
;
_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
_atom_sites_solution_primary     direct
_audit_creation_date             2017-01-23
_audit_creation_method
;
Olex2 1.2
(compiled 2017.01.04 svn.r3372 for OlexSys, GUI svn.r5292)
;
_cell_angle_alpha                90
_cell_angle_beta                 103.9254(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.11890(9)
_cell_length_b                   21.49866(17)
_cell_length_c                   18.65685(19)
_cell_measurement_reflns_used    15932
_cell_measurement_temperature    150.00(10)
_cell_measurement_theta_max      71.7720
_cell_measurement_theta_min      4.7720
_cell_volume                     3939.38(6)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_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    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      150.00(10)
_diffrn_detector_area_resol_mean 8.1150
_diffrn_detector_type            EosS2
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, EosS2'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0358
_diffrn_reflns_av_unetI/netI     0.0268
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            26825
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         71.917
_diffrn_reflns_theta_min         4.113
_exptl_absorpt_coefficient_mu    0.701
_exptl_absorpt_correction_T_max  0.977
_exptl_absorpt_correction_T_min  0.946
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Numerical absorption correction based on gaussian integration over
            a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_colour_primary    red
_exptl_crystal_density_diffrn    1.124
_exptl_crystal_description       block
_exptl_crystal_F_000             1440
_exptl_crystal_size_max          0.4349
_exptl_crystal_size_mid          0.1849
_exptl_crystal_size_min          0.1571
_refine_diff_density_max         0.311
_refine_diff_density_min         -0.323
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     452
_refine_ls_number_reflns         7666
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0524
_refine_ls_R_factor_gt           0.0478
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0897P)^2^+0.7348P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1300
_refine_ls_wR_factor_ref         0.1354
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6838
_reflns_number_total             7666
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            om7b00056_si_003.cif
_cod_data_source_block           s14msh21
_cod_depositor_comments
'Adding full bibliography for 4087164--4087165.cif.'
_cod_database_code               4087164
_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:
 C12(H12), C15(H15), C24(H24), C27(H27)
2.b Secondary CH2 refined with riding coordinates:
 C30(H30A,H30B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C8(H8), C9(H9), C10(H10), C20(H20), C21(H21), C22(H22), C31(H31),
 C32(H32), C34(H34), C35(H35), C36(H36), C37(H37), C38(H38), C40(H40), C41(H41),
  C42(H42), C43(H43), C44(H44)
2.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C5(H5A,H5B,H5C), C13(H13A,H13B,H13C), C14(H14A,H14B,H14C),
 C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C25(H25A,H25B,H25C), C26(H26A,H26B,
 H26C), C28(H28A,H28B,H28C), C29(H29A,H29B,H29C)
;
_olex2_submission_special_instructions 'No special instructions were received'