Mechanistic insights into the potassium tert-butoxide-mediated synthesis of N-heterobiaryls.
Stephens, David E.; Lakey-Beitia, Johant; Burch, Jessica E.; Arman, Hadi D.; Larionov, Oleg V.; Chemical communications (Cambridge, England) 52 (2016) 9945–9948; doi:10.1039/c6cc04816a

data_7124815
_publ_section_title
;
 Mechanistic insights into the potassium tert-butoxide-mediated synthesis
 of N-heterobiaryls.
;
_journal_issue                   64
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              9945
_journal_page_last               9948
_journal_paper_doi               10.1039/c6cc04816a
_journal_volume                  52
_journal_year                    2016
_chemical_formula_moiety         'C24 H24 N2'
_chemical_formula_sum            'C24 H24 N2'
_chemical_formula_weight         340.45
_chemical_name_systematic        6,6'-Diisopropyl-2,2'-biquinoline
_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     direct
_audit_creation_date             2015-07-10
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_audit_update_record
;
2016-04-14 deposited with the CCDC.
2016-07-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 94.02(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   12.648(15)
_cell_length_b                   5.914(7)
_cell_length_c                   13.125(17)
_cell_measurement_reflns_used    1998
_cell_measurement_temperature    293
_cell_measurement_theta_max      39.7
_cell_measurement_theta_min      3.2
_cell_volume                     979(2)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      293
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_details
;
scan:
	Number of images: 182
	           Slice: -125.0000 - -34.0000
	     Image width: 0.5000
	        Exp time: 45.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 0.0000
	             Phi: 180.0000
	             XTD: 35.1329
	          2theta: -34.5652
scan:
	Number of images: 138
	           Slice: -51.0000 - 18.0000
	     Image width: 0.5000
	        Exp time: 45.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 70.0000
	             Phi: 0.0000
	             XTD: 35.1329
	          2theta: -34.5652
scan:
	Number of images: 72
	           Slice: -125.0000 - -89.0000
	     Image width: 0.5000
	        Exp time: 45.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 0.0000
	             Phi: 90.0000
	             XTD: 35.1329
	          2theta: -34.5652
;
_diffrn_measurement_device
;
AFC12 (Right): Kappa 3 circle
;
_diffrn_measurement_device_type
;
Rigaku Saturn724 (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support Fiber
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      -0.012006
_diffrn_orient_matrix_UB_12      -0.000408
_diffrn_orient_matrix_UB_13      -0.078346
_diffrn_orient_matrix_UB_21      0.154929
_diffrn_orient_matrix_UB_22      -0.063556
_diffrn_orient_matrix_UB_23      -0.023410
_diffrn_orient_matrix_UB_31      -0.029067
_diffrn_orient_matrix_UB_32      -0.070633
_diffrn_orient_matrix_UB_33      -0.000602
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0561
_diffrn_reflns_av_unetI/netI     0.0475
_diffrn_reflns_Laue_measured_fraction_full 0.985
_diffrn_reflns_Laue_measured_fraction_max 0.985
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3070
_diffrn_reflns_point_group_measured_fraction_full 0.985
_diffrn_reflns_point_group_measured_fraction_max 0.985
_diffrn_reflns_theta_full        25.045
_diffrn_reflns_theta_max         25.045
_diffrn_reflns_theta_min         3.112
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           40.0
_diffrn_source_power             2.0
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.383
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR (Higashi, 1995)'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.155
_exptl_crystal_description       plate
_exptl_crystal_F_000             364
_exptl_crystal_recrystallization_method
'Vapor diffusion of pentane into ethylacetate/chloroform mixture'
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.189
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.040
_refine_ls_extinction_coef       0.067(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         1699
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.1243
_refine_ls_R_factor_gt           0.0710
_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^)+(0.0100P)^2^+0.8000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1248
_refine_ls_wR_factor_ref         0.1519
_reflns_Friedel_coverage         0.000
_reflns_number_gt                859
_reflns_number_total             1699
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc04816a2.cif
_cod_data_source_block           cd1345a
_cod_database_code               7124815
_shelx_estimated_absorpt_t_max   0.987
_shelx_estimated_absorpt_t_min   0.987
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C10(H10)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C8(H8), C7(H7)
2.c Idealised Me refined as rotating group:
 C11(H11A,H11B,H11C), C12(H12A,H12B,H12C)
;
_shelx_res_checksum              62672
_shelx_shelxl_version_number     2014/7
_olex2_exptl_crystal_mounting_method 'glass fiber'
_olex2_submission_special_instructions 'No special instructions were received'