Rhodium-catalyzed annulation between 2-arylimidazo[1,2-a]pyridines and alkynes leading to pyrido[1,2-a]benzimidazole derivatives.
Peng, Haibo; Yu, Jin-Tao; Jiang, Yan; Wang, Lei; Cheng, Jiang; Organic & biomolecular chemistry 13 (2015) 5354–5357; doi:10.1039/c5ob00450k

data_7154414
_publ_section_title
;
 Rhodium-catalyzed annulation between 2-arylimidazo[1,2-a]pyridines and
 alkynes leading to pyrido[1,2-a]benzimidazole derivatives.
;
_journal_issue                   19
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5354
_journal_page_last               5357
_journal_paper_doi               10.1039/c5ob00450k
_journal_volume                  13
_journal_year                    2015
_chemical_formula_sum            'C28 H19 Cl3 N2'
_chemical_formula_weight         489.80
_space_group_IT_number           2
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_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
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_atom_sites_solution_primary     direct
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_audit_update_record
;
2015-04-03 deposited with the CCDC.
2015-04-08 downloaded from the CCDC.
;
_cell_angle_alpha                106.641(5)
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_cell_angle_gamma                107.250(5)
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_cell_length_b                   10.807(2)
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_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 2008)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker Apex II'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
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_diffrn_reflns_limit_k_min       -12
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_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6438
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_diffrn_reflns_theta_max         25.00
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_exptl_absorpt_coefficient_mu    0.408
_exptl_absorpt_correction_T_max  0.8875
_exptl_absorpt_correction_T_min  0.8671
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS: Bruker, 2000'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
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_refine_ls_hydrogen_treatment    constr
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_refine_ls_number_reflns         4059
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_refine_ls_restrained_S_all      1.135
_refine_ls_R_factor_all          0.0962
_refine_ls_R_factor_gt           0.0743
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2302
_refine_ls_wR_factor_ref         0.2795
_reflns_number_gt                3061
_reflns_number_total             4059
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ob00450k2.cif
_cod_data_source_block           3aa
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-Scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 

 Adding full bibliography for 7154414.cif.
;
_cod_original_sg_symbol_H-M      'P-1   '
_cod_database_code               7154414