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_7124819
_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         'C26 H28 N2'
_chemical_formula_sum            'C26 H28 N2'
_chemical_formula_weight         368.50
_chemical_name_systematic        '6,6'-Di-tert-butyl-2,2'-biquinoline '
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-I 2ya'
_space_group_name_H-M_alt        'I 1 2/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-08-05
_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                 94.032(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.301(11)
_cell_length_b                   6.133(3)
_cell_length_c                   18.738(11)
_cell_measurement_reflns_used    2763
_cell_measurement_temperature    293
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.4
_cell_volume                     2098(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 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_details
;
scan:
	Number of images: 246
	           Slice: -68.0000 - 55.0000
	     Image width: 0.5000
	        Exp time: 50.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 70.0000
	             Phi: 180.0000
	             XTD: 34.9591
	          2theta: -35.0597
scan:
	Number of images: 188
	           Slice: -50.0000 - 44.0000
	     Image width: 0.5000
	        Exp time: 50.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 70.0000
	             Phi: 0.0000
	             XTD: 34.9591
	          2theta: -35.0597
scan:
	Number of images: 94
	           Slice: -70.0000 - -23.0000
	     Image width: 0.5000
	        Exp time: 50.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 0.0000
	             Phi: 0.0000
	             XTD: 34.9591
	          2theta: -35.0597
scan:
	Number of images: 88
	           Slice: -56.0000 - -12.0000
	     Image width: 0.5000
	        Exp time: 50.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 70.0000
	             Phi: 270.0000
	             XTD: 34.9591
	          2theta: -35.0597
scan:
	Number of images: 62
	           Slice: -115.0000 - -84.0000
	     Image width: 0.5000
	        Exp time: 50.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	           Kappa: 0.0000
	             Phi: 270.0000
	             XTD: 34.9591
	          2theta: -35.0597
;
_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      -0.050853
_diffrn_orient_matrix_UB_12      0.016597
_diffrn_orient_matrix_UB_13      -0.011794
_diffrn_orient_matrix_UB_21      0.059553
_diffrn_orient_matrix_UB_22      0.138756
_diffrn_orient_matrix_UB_23      -0.061512
_diffrn_orient_matrix_UB_31      0.000186
_diffrn_orient_matrix_UB_32      -0.021748
_diffrn_orient_matrix_UB_33      -0.048878
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0857
_diffrn_reflns_av_unetI/netI     0.0578
_diffrn_reflns_Laue_measured_fraction_full 0.986
_diffrn_reflns_Laue_measured_fraction_max 0.986
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            6151
_diffrn_reflns_point_group_measured_fraction_full 0.986
_diffrn_reflns_point_group_measured_fraction_max 0.986
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.493
_diffrn_reflns_theta_min         3.008
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           40.0
_diffrn_source_power             2.0
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.527
_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    1.167
_exptl_crystal_description       plate
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.51
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.176
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     130
_refine_ls_number_reflns         1924
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0760
_refine_ls_R_factor_gt           0.0634
_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^)+(0.0200P)^2^+2.7500P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1402
_refine_ls_wR_factor_ref         0.1458
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1474
_reflns_number_total             1924
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc04816a2.cif
_cod_data_source_block           cd1341f
_cod_database_code               7124819
_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 Aromatic/amide H refined with riding coordinates:
 C5(H5), C7(H7), C8(H8), C3(H3), C2(H2)
2.b Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C), C11(H11A,H11B,H11C), C13(H13A,H13B,H13C)
;
_shelx_res_checksum              75191
_shelx_shelxl_version_number     2014/7
_olex2_exptl_crystal_mounting_method 'glass fiber'
_olex2_submission_special_instructions 'No special instructions were received'