A paraelectric-ferroelectric phase transition of an organically templated zinc oxalate coordination polymer.
Pasińska, K; Piecha-Bisiorek, A; Kinzhybalo, V.; Ciżman, A; Gągor, A; Pietraszko, A.; Dalton transactions (Cambridge, England : 2003) 47 (2018) 11308–11312; doi:10.1039/c8dt02859a

data_7047112
_publ_section_title
;
 A paraelectric-ferroelectric phase transition of an organically templated
 zinc oxalate coordination polymer.
;
_journal_issue                   33
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11308
_journal_page_last               11312
_journal_paper_doi               10.1039/c8dt02859a
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C8 O16 Zn2, 2(C6 H14 N2), 6(H2 O)'
_chemical_formula_sum            'C20 H40 N4 O22 Zn2'
_chemical_formula_weight         819.30
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2017-10-20
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2017-10-27 deposited with the CCDC.
2018-07-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.34(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.399(3)
_cell_length_b                   16.703(5)
_cell_length_c                   9.807(3)
_cell_measurement_reflns_used    5575
_cell_measurement_temperature    169.99(11)
_cell_measurement_theta_max      28.8080
_cell_measurement_theta_min      2.9640
_cell_volume                     1539.2(8)
_computing_cell_refinement       'CrysAlisPro 1.171.38.34a (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.34a (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.34a (Rigaku OD, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      169.99(11)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.6249
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -64.00  43.00   1.00    9.17    --   12.31 -57.00  90.00  107
  2  \w    -69.00  47.00   1.00    9.17    --   12.31 -77.00  30.00  116
  3  \w    -25.00  30.00   1.00    9.17    --  -13.41 -99.00 -90.00   55
  4  \w     35.00  76.00   1.00    9.17    --   12.31 178.00 -30.00   41
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0607795000
_diffrn_orient_matrix_UB_12      -0.0247624000
_diffrn_orient_matrix_UB_13      -0.0064722000
_diffrn_orient_matrix_UB_21      -0.0443826000
_diffrn_orient_matrix_UB_22      -0.0343509000
_diffrn_orient_matrix_UB_23      -0.0022924000
_diffrn_orient_matrix_UB_31      -0.0058063000
_diffrn_orient_matrix_UB_32      0.0033126000
_diffrn_orient_matrix_UB_33      -0.0720066000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0282
_diffrn_reflns_av_unetI/netI     0.0438
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11971
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.998
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         2.077
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    1.659
_exptl_absorpt_correction_T_max  0.838
_exptl_absorpt_correction_T_min  0.712
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.34a (Rigaku Oxford Diffraction, 2015)
Analytical numeric absorption correction using a multifaceted crystal
            model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.768
_exptl_crystal_description       block
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.281
_exptl_crystal_size_mid          0.179
_exptl_crystal_size_min          0.133
_refine_diff_density_max         0.409
_refine_diff_density_min         -0.468
_refine_diff_density_rms         0.102
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.50(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     422
_refine_ls_number_reflns         5310
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0424
_refine_ls_R_factor_gt           0.0326
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0230P)^2^+0.8030P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0645
_refine_ls_wR_factor_ref         0.0686
_reflns_Friedel_coverage         0.930
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                4663
_reflns_number_total             5310
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt02859a2.cif
_cod_data_source_block           DZnOH_170K
_cod_depositor_comments
'Adding full bibliography for 7047095--7047114.cif.'
_cod_database_code               7047112
_shelx_shelxl_version_number     2014/7
_chemical_oxdiff_formula         'C20 H40 N4 O22 Zn2'
_reflns_odcompleteness_completeness 99.97
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.50(2)
 0.50(2)
2. Fixed Uiso
 At 1.2 times of:
  All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All O(H,H) groups
3.a Free rotating group:
 O9A(H9AC,H9AD), O10A(H10E,H10F), O11A(H11A,H11B), O9B(H9BC,H9BD), O10B(H10G,
 H10H), O11B(H11C,H11D), O7B(O8B,O3B,O4B,C2B,C3B,O1B,O6B,C1B,O2B,O5B,C4B)
3.b Ternary CH refined with riding coordinates:
 N1A(H1A), N2A(H2A), N1B(H1B), N2B(H2B)
3.c Secondary CH2 refined with riding coordinates:
 C5A(H5AA,H5AB), C6A(H6AA,H6AB), C7A(H7AA,H7AB), C8A(H8AA,H8AB), C9A(H9AA,
 H9AB), C10A(H10A,H10B), C5B(H5BA,H5BB), C6B(H6BA,H6BB), C7B(H7BA,H7BB),
 C8B(H8BA,H8BB), C9B(H9BA,H9BB), C10B(H10C,H10D)
;
_shelx_res_checksum              74138
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.058
_oxdiff_exptl_absorpt_empirical_full_min 0.962