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_7234913
_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_formula_sum            'C8 H11 Cl N2 O6'
_chemical_formula_weight         266.64
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.3294(2)
_cell_length_b                   10.3097(5)
_cell_length_c                   19.2218(9)
_cell_measurement_reflns_used    2378
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.5994
_cell_measurement_theta_min      2.2333
_cell_volume                     1056.13(8)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.42 (release 29-05-2009 CrysAlis171 .NET)
(compiled May 29 2009,17:40:42)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.33.42 (release 29-05-2009 CrysAlis171 .NET)
(compiled May 29 2009,17:40:42)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.42 (release 29-05-2009 CrysAlis171 .NET)
(compiled May 29 2009,17:40:42)
;
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 8.4350
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
;
Xcalibur, Sapphire1, long nozzle
;
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0202
_diffrn_reflns_av_unetI/netI     0.0430
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       3
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            3851
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.677
_diffrn_reflns_theta_max         25.677
_diffrn_reflns_theta_min         2.898
_exptl_absorpt_coefficient_mu    0.383
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.77933
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.42 (release 29-05-2009 CrysAlis171 .NET)
(compiled May 29 2009,17:40:42)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourles
_exptl_crystal_density_diffrn    1.671
_exptl_crystal_description       prism
_exptl_crystal_F_000             548
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.246
_refine_diff_density_min         -0.250
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 578 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.02(3)
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   0.852
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         2004
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.852
_refine_ls_R_factor_all          0.0447
_refine_ls_R_factor_gt           0.0325
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0600P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0781
_refine_ls_wR_factor_ref         0.0832
_reflns_Friedel_coverage         0.671
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                1674
_reflns_number_total             2004
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            J-Mater-Chem-C-2016-4-7622.cif
_cod_data_source_block           1
_cod_database_code               7234913
_shelx_res_checksum              39247
_shelx_hkl_checksum              40075