Strong piezoelectricity in [H-beta-(2-pyridyl)-Ala-OH][BF4] and [H-beta-(2-pyridyl)-Ala-OH][ClO4] - new amino acid based hybrid crystals
Maciej Wojtas; Anna Gagor; Andrei L. Kholkin; Journal of Materials Chemistry C 4 (2016) 7622–7631; doi:10.1039/C6TC02206E

data_7234914
_publ_section_title
;
 Strong piezoelectricity in [H-beta-(2-pyridyl)-Ala-OH][BF4] and
 [H-beta-(2-pyridyl)-Ala-OH][ClO4] - new amino acid based hybrid crystals
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              7622
_journal_page_last               7631
_journal_paper_doi               10.1039/C6TC02206E
_journal_volume                  4
_journal_year                    2016
_chemical_absolute_configuration unk
_chemical_formula_sum            'C8 H11 B F4 N2 O2'
_chemical_formula_weight         254.00
_space_group_crystal_system      triclinic
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_atom_sites_solution_hydrogens   mixed
_cell_angle_alpha                87.637(4)
_cell_angle_beta                 80.166(3)
_cell_angle_gamma                89.255(3)
_cell_formula_units_Z            2
_cell_length_a                   5.0586(2)
_cell_length_b                   9.4971(4)
_cell_length_c                   11.2012(5)
_cell_measurement_reflns_used    2435
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.0240
_cell_measurement_theta_min      2.7650
_cell_volume                     529.76(4)
_computing_cell_refinement
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.35h (release 09-02-2015 CrysAlis171 .NET)
(compiled Feb  9 2015,16:26:32)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35h (release 09-02-2015 CrysAlis171 .NET)
(compiled Feb  9 2015,16:26:32)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35h (release 09-02-2015 CrysAlis171 .NET)
(compiled Feb  9 2015,16:26:32)
;
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_type            'Sapphire1, long nozzle'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Sapphire1, long nozzle'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0184
_diffrn_reflns_av_unetI/netI     0.0362
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5256
_diffrn_reflns_point_group_measured_fraction_max 0.867
_diffrn_reflns_theta_full        25.681
_diffrn_reflns_theta_max         25.681
_diffrn_reflns_theta_min         2.146
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.157
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.98870
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35h (release 09-02-2015 CrysAlis171 .NET)
(compiled Feb  9 2015,16:26:32)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.592
_exptl_crystal_description       prism
_exptl_crystal_F_000             260
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.308
_refine_diff_density_min         -0.270
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 1079 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.1(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.137
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     354
_refine_ls_number_reflns         3472
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.151
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_gt           0.0492
_refine_ls_shift/su_max          0.017
_refine_ls_shift/su_mean         0.004
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0470P)^2^+0.1700P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1102
_refine_ls_wR_factor_ref         0.1192
_reflns_Friedel_coverage         0.734
_reflns_Friedel_fraction_full    0.734
_reflns_Friedel_fraction_max     0.734
_reflns_number_gt                3004
_reflns_number_total             3472
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            J-Mater-Chem-C-2016-4-7622.cif
_cod_data_source_block           rt
_cod_database_code               7234914
_shelx_res_checksum              29206
_shelx_hkl_checksum              35574