Blind crystal structure prediction of a novel second polymorph of 1-hydroxy-7-azabenzotriazole
Harriott Nowell; Christopher S. Frampton; Julie Waite; Sarah L. Price; Acta Crystallographica Section B 62 (2006) 642–650; doi:10.1107/S0108768106012584

data_2100524
_publ_section_title
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 Blind crystal structure prediction of a novel second polymorph of
 1-hydroxy-7-azabenzotriazole
;
_journal_coeditor_code           BK5029
_journal_date_accepted           2006-04-06
_journal_date_recd_electronic    2006-01-23
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              642
_journal_page_last               650
_journal_paper_category          FA
_journal_paper_doi               10.1107/S0108768106012584
_journal_volume                  62
_journal_year                    2006
_chemical_formula_sum            'C5 H4 N4 O'
_chemical_formula_weight         136.12
_chemical_name_common
;
HOAt Form I
;
_chemical_name_systematic
;
1-hydroxy-7-azabenzotriazole
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 114.8850(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   22.0427(6)
_cell_length_b                   3.93110(10)
_cell_length_c                   14.2340(4)
_cell_measurement_reflns_used    3604
_cell_measurement_temperature    123.0(10)
_cell_measurement_theta_max      29.10
_cell_measurement_theta_min      2.95
_cell_volume                     1118.89(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL, Bruker SADABS'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123.0(10)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'SMART 1K CCD area detector'
_diffrn_measurement_method       'Narrow frame omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0171
_diffrn_reflns_av_sigmaI/netI    0.0113
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4460
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    0.122
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.616
_exptl_crystal_description       Prism
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.282
_refine_diff_density_min         -0.160
_refine_ls_extinction_coef       0.0104(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     108
_refine_ls_number_reflns         1140
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0326
_refine_ls_R_factor_gt           0.0296
_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^)+(0.0628P)^2^+0.6435P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0878
_refine_ls_wR_factor_ref         0.0903
_reflns_number_gt                1038
_reflns_number_total             1140
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bk5029.cif
_cod_data_source_block           0442s
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               2100524