[(C2H5)4N][U2O4(HCOO)5], an Ammonium Uranyl Formate Framework Showing Para- to Ferro-Electric Transition: Synthesis, Structures, and Properties.
Zhu, Qianqian; Shang, Ran; Chen, Sa; Liu, Chunli; Wang, Zheming; Gao, Song; Inorganic chemistry 53 (2014) 8708–8716; doi:10.1021/ic501336x

data_4340536
_publ_section_title
;
 [(C2H5)4N][U2O4(HCOO)5], an Ammonium Uranyl Formate Framework Showing
 Para- to Ferro-Electric Transition: Synthesis, Structures, and
 Properties.
;
_journal_issue                   16
_journal_name_full               'Inorganic chemistry'
_journal_page_first              8708
_journal_page_last               8716
_journal_paper_doi               10.1021/ic501336x
_journal_volume                  53
_journal_year                    2014
_chemical_formula_sum            'C13 H25 N O14 U2'
_chemical_formula_weight         895.40
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           113
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P -4 2ab'
_symmetry_space_group_name_H-M   'P -4 21 m'
_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            2
_cell_length_a                   12.3262(2)
_cell_length_b                   12.3262(2)
_cell_length_c                   8.0856(5)
_cell_measurement_reflns_used    7113
_cell_measurement_temperature    250
_cell_measurement_theta_max      28.94
_cell_measurement_theta_min      4.13
_cell_volume                     1228.49(8)
_computing_cell_refinement       'CrysAlisPro (Agilent Technologies, 2012)'
_computing_data_collection       'CrysAlisPro (Agilent Technologies, 2012)'
_computing_data_reduction        'CrysAlisPro (Agilent Technologies, 2012)'
_computing_molecular_graphics    'Bruker SHELXTL V5.1 (Sheldrick, 1998)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      250
_diffrn_detector_area_resol_mean 10.3914
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, AtlasCCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0840
_diffrn_reflns_av_sigmaI/netI    0.0305
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            20709
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         3.44
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    13.226
_exptl_absorpt_correction_T_max  0.220
_exptl_absorpt_correction_T_min  0.086
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
Gaussian integration (Coppens, 1970)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.421
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             812
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.24
_refine_diff_density_max         1.762
_refine_diff_density_min         -2.594
_refine_diff_density_rms         0.154
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.06(3)
_refine_ls_extinction_coef       0.0002(3)
_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   1.081
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     85
_refine_ls_number_reflns         1623
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0417
_refine_ls_R_factor_gt           0.0342
_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^)+(0.0346P)^2^+5.5157P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0772
_refine_ls_wR_factor_ref         0.0824
_reflns_number_gt                1462
_reflns_number_total             1623
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic501336x_si_002.cif
_cod_data_source_block           1-250K
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 4340535--4340537.cif.
;
_cod_original_sg_symbol_H-M      'P -42(1)m'
_cod_database_code               4340536