The Boat Conformation in Pyrazaboles. A Theoretical and Experimental Study†
Cavero, Emma; Giménez, Raquel; Uriel, Santiago; Beltrán, Eduardo; Serrano, José Luis; Alkorta, Ibon; Elguero, José; Crystal Growth & Design 8 (2008) 838–; doi:10.1021/cg0702939

data_4503095
_publ_section_title
;
 The Boat Conformation in Pyrazaboles. A Theoretical and Experimental
 Study&#x2020;
;
_journal_issue                   3
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              838
_journal_paper_doi               10.1021/cg0702939
_journal_volume                  8
_journal_year                    2008
_chemical_formula_sum            'C10 H10 B2 N4'
_chemical_formula_weight         207.84
_chemical_name_systematic        2,6-bis(ethynyl)pyrazabole
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 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                 92.020(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.2370(10)
_cell_length_b                   15.905(3)
_cell_length_c                   8.4140(10)
_cell_measurement_reflns_used    86
_cell_measurement_temperature    295
_cell_measurement_theta_max      36.512
_cell_measurement_theta_min      9.626
_cell_volume                     566.66(18)
_computing_cell_refinement       'Siemens XSCANS'
_computing_data_collection       'Siemens XSCANS'
_computing_data_reduction        'Siemens XSCANS'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'Siemens SHELXTL'
_computing_structure_solution    'Siemens SHELXTL'
_diffrn_ambient_temperature      295
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       '2\q/\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0188
_diffrn_reflns_av_sigmaI/netI    0.0312
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            1314
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.42
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.995
_exptl_absorpt_correction_T_min  0.984
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 Siemens SADABS 
;
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.218
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             216
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.115
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     100
_refine_ls_number_reflns         1157
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0655
_refine_ls_R_factor_gt           0.0414
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0491P)^2^+0.0496P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0952
_refine_ls_wR_factor_ref         0.1091
_reflns_number_gt                822
_reflns_number_total             1157
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg0702939-file003.cif
_cod_data_source_block           compound_5
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/m
_cod_database_code               4503095