Two-dimensional hydrogen-bonded networks in crystals of diboronic acids
Kenneth E. Maly; Thierry Maris; James D. Wuest; CrystEngComm  (2006) 33–35; doi:10.1039/b516402h

data_7203219
_publ_section_title
;
 Two-dimensional hydrogen-bonded networks in crystals of diboronic
 acids
;
_journal_name_full               CrystEngComm
_journal_page_first              33
_journal_page_last               35
_journal_paper_doi               10.1039/b516402h
_journal_year                    2006
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_moiety         'C14 H12 B2 O4'
_chemical_formula_sum            'C14 H12 B2 O4'
_chemical_formula_weight         265.86
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 103.737(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.3430(2)
_cell_length_b                   5.0685(1)
_cell_length_c                   11.5810(2)
_cell_measurement_reflns_used    5237
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      68.82
_cell_measurement_theta_min      4.91
_cell_volume                     646.77(2)
_computing_cell_refinement       'SMART (Bruker, 2003)'
_computing_data_collection       'SMART (Bruker, 2003)'
_computing_data_reduction        'SAINT (Bruker, 2004)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'UdMX (local program)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker Smart 6000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'Montel 200 optics'
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.026
_diffrn_reflns_av_sigmaI/netI    0.0134
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8809
_diffrn_reflns_theta_full        68.81
_diffrn_reflns_theta_max         68.81
_diffrn_reflns_theta_min         4.91
_diffrn_standards_decay_%        1.03
_diffrn_standards_number         51
_exptl_absorpt_coefficient_mu    0.793
_exptl_absorpt_correction_T_max  0.9600
_exptl_absorpt_correction_T_min  0.9300
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick,1996)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.365
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             276
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.232
_refine_diff_density_min         -0.153
_refine_diff_density_rms         0.044
_refine_ls_extinction_coef       0.0074(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   1.088
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     116
_refine_ls_number_reflns         1179
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0367
_refine_ls_R_factor_gt           0.0353
_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^)+(0.0747P)^2^+0.0720P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1030
_refine_ls_wR_factor_ref         0.1048
_reflns_number_gt                1090
_reflns_number_total             1179
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b516402h.txt
_cod_data_source_block           jiw973
_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.

'_geom_angle_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (14
times).

'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (11
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (14 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7203219