Supramolecular gels based on boronate esters and imidazolyl donors.
Luisier, N.; Scopelliti, R.; Severin, K.; Soft matter 12 (2016) 588–593; doi:10.1039/c5sm02298c

data_1540453
_publ_section_title
;
 Supramolecular gels based on boronate esters and imidazolyl donors.
;
_journal_issue                   2
_journal_name_full               'Soft matter'
_journal_page_first              588
_journal_page_last               593
_journal_paper_doi               10.1039/c5sm02298c
_journal_volume                  12
_journal_year                    2016
_chemical_formula_moiety         'C17 H14 B N3 O2'
_chemical_formula_sum            'C17 H14 B N3 O2'
_chemical_formula_weight         303.12
_chemical_name_systematic
'Adduct of N-methylimidazole and 4-(benzo[d][1,3,2]dioxaborol-2-yl)benzonitrile'
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-09-09 deposited with the CCDC.
2015-10-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.7880(17)
_cell_length_b                   6.0950(6)
_cell_length_c                   12.5928(8)
_cell_measurement_reflns_used    160
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      22
_cell_measurement_theta_min      3
_cell_volume                     1518.8(2)
_computing_cell_refinement       'Dirax/lsq (Duisenberg & Schreurs, 1989-2000)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction        'EvalCCD (Duisenberg & Schreurs, 1990-2000)'
_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      100(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX II CCD'
_diffrn_measurement_method       'phi and 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  0.0343
_diffrn_reflns_av_sigmaI/netI    0.0269
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            23705
_diffrn_reflns_theta_full        30.03
_diffrn_reflns_theta_max         30.03
_diffrn_reflns_theta_min         3.24
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.7460
_exptl_absorpt_correction_T_min  0.6349
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2008, Bruker AXS, 2008'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             632
_exptl_crystal_recrystallization_method 'Vapour Deposition'
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         4341
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0390
_refine_ls_R_factor_gt           0.0345
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0444P)^2^+0.2912P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0824
_refine_ls_wR_factor_ref         0.0861
_reflns_number_gt                4062
_reflns_number_total             4341
_reflns_threshold_expression     >2sigma(I)
_publcif_datablock.id            {670030e0-2226-4039-9562-cee8236b5de5}
_cod_data_source_file            c5sm02298c6.cif
_cod_data_source_block           nl043d
_cod_depositor_comments
'Adding full bibliography for 1540448--1540453.cif.'
_cod_database_code               1540453