Imidazo[1,5-a]pyridine-1-ylalkylalcohols: synthesis via intramolecular cyclization of N-thioacyl 1,2-aminoalcohols and their silyl ethers and molecular structures.
Murai, Toshiaki; Nagaya, Eri; Shibahara, Fumitoshi; Maruyama, Toshifumi; Organic & biomolecular chemistry 10 (2012) 4943–4953; doi:10.1039/c2ob25438g

data_7152389
_publ_section_title
;
 Imidazo[1,5-a]pyridine-1-ylalkylalcohols: synthesis via intramolecular
 cyclization of N-thioacyl 1,2-aminoalcohols and their silyl ethers and
 molecular structures.
;
_journal_issue                   25
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4943
_journal_page_last               4953
_journal_paper_doi               10.1039/c2ob25438g
_journal_volume                  10
_journal_year                    2012
_chemical_formula_moiety         'C18 H14 N4 O'
_chemical_formula_sum            'C18 H14 N4 O'
_chemical_formula_weight         302.33
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      33
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.97(2)
_cell_length_b                   4.887(4)
_cell_length_c                   11.168(9)
_cell_measurement_reflns_used    4439
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.7
_cell_volume                     1417(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      203(2)
_diffrn_detector_area_resol_mean 14.62
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'Rigaku/MSC Mercury CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0755
_diffrn_reflns_av_sigmaI/netI    0.0396
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            10824
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         4.24
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.989
_exptl_absorpt_correction_T_min  0.975
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   '(Higashi, 1999)'
_exptl_crystal_colour            Orange
_exptl_crystal_density_diffrn    1.417
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.372
_refine_diff_density_min         -0.214
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         1684
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0532
_refine_ls_R_factor_gt           0.0522
_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^)+(0.0250P)^2^+1.5000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1140
_refine_ls_wR_factor_ref         0.1145
_reflns_number_gt                1665
_reflns_number_total             1684
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ob25438g.txt
_cod_data_source_block           en091
_cod_original_cell_volume        1417.7(19)
_cod_original_sg_symbol_H-M      'P n a 21 '
_cod_database_code               7152389