A series of compounds forming polar crystals and showing single-crystal-to-single-crystal transitions between polar phases
Centore, Roberto; Jazbinsek, Mojca; Tuzi, Angela; Roviello, Antonio; Capobianco, Amedeo; Peluso, Andrea; CrystEngComm 14 (2012) 2645–; doi:10.1039/c2ce06352b

data_7207559
_publ_section_title
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 A series of compounds forming polar crystals and showing
 single-crystal-to-single-crystal transitions between polar phases
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_journal_issue                   8
_journal_name_full               CrystEngComm
_journal_page_first              2645
_journal_paper_doi               10.1039/c2ce06352b
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C10 H12 N2 O2'
_chemical_formula_sum            'C10 H12 N2 O2'
_chemical_formula_weight         192.22
_chemical_name_systematic
;
N'-2-propylidene-4-hydroxybenzohydrazide
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0080(10)
_cell_length_b                   7.0640(10)
_cell_length_c                   15.833(2)
_cell_measurement_reflns_used    560
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      23.196
_cell_measurement_theta_min      3.757
_cell_volume                     1007.5(2)
_computing_cell_refinement
;
Dirax/lsq (Duisenberg et al., 2000)
;
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
;
EvalCCD (Duisenberg & Schreurs 1990-2000)
;
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare at al, 1999)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_detector_type
;
Bruker-Nonius 95mm CCD camera on \k-goniostat
;
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Bruker-Nonius KappaCCD'
_diffrn_measurement_method
;
CCD rotation images, thick slices
;
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0352
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            6407
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         3.16
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9780
_exptl_absorpt_correction_T_min  0.9611
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS (Bruker, 2000)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             408
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.190
_refine_diff_density_min         -0.156
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.6(11)
_refine_ls_extinction_coef       0.042(5)
_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   0.910
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2231
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.910
_refine_ls_R_factor_all          0.0382
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0737P)^2^+0.1006P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0890
_refine_ls_wR_factor_ref         0.0967
_reflns_number_gt                2021
_reflns_number_total             2231
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce06352b.txt
_cod_data_source_block           imaceti-100
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 
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_cod_database_code               7207559