High temperature molecular-based phase transition compounds with tunable and switchable dielectric properties
Wan, Min; Wang, Yan-Ning; Liu, Jing-Yuan; Tong, Liang; Ye, Si-Yu; Li, Jun-Yi; Chen, Li-Zhuang; CrystEngComm 24 (2022) 782–787; doi:10.1039/D1CE01488A

data_7244201
_publ_section_title
;
 High temperature molecular-based phase transition compounds with tunable
 and switchable dielectric properties
;
_journal_issue                   4
_journal_name_full               CrystEngComm
_journal_page_first              782
_journal_page_last               787
_journal_paper_doi               10.1039/D1CE01488A
_journal_volume                  24
_journal_year                    2022
_chemical_formula_moiety         'C8 H18 N2, 2(O4 Re)'
_chemical_formula_sum            'C8 H17 N2 O8 Re2'
_chemical_formula_weight         641.64
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_date             2021-08-24
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-08-29 deposited with the CCDC.	2021-12-28 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.2360(13)
_cell_length_b                   14.7742(19)
_cell_length_c                   19.084(2)
_cell_measurement_reflns_used    5355
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.454
_cell_measurement_theta_min      2.643
_cell_volume                     2886.0(6)
_computing_cell_refinement       'SAINT V8.18C (?, 2016)'
_computing_data_reduction        'SAINT V8.18C (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'olex2.solve (Bourhis et al., 2015)'
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0815
_diffrn_reflns_av_unetI/netI     0.0450
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            20684
_diffrn_reflns_theta_full        26.39
_diffrn_reflns_theta_max         26.39
_diffrn_reflns_theta_min         2.65
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    16.799
_exptl_absorpt_correction_T_max  0.158
_exptl_absorpt_correction_T_min  0.129
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'clear light white'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    white
_exptl_crystal_density_diffrn    2.953
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2344
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.13
_refine_diff_density_max         1.291
_refine_diff_density_min         -5.382
_refine_diff_density_rms         0.479
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         2957
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0500
_refine_ls_R_factor_gt           0.0399
_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^)+(0.0587P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0940
_refine_ls_wR_factor_ref         0.1002
_reflns_number_gt                2422
_reflns_number_total             2957
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d1ce01488a2.cif
_cod_data_source_block           EtdabcoReO4
_cod_depositor_comments
'Adding full bibliography for 7244198--7244201.cif.'
_cod_database_code               7244201
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 N4(H4)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C3(H3A,H3B), C4(H4A,H4B), C5(H5A,H5B), C6(H6A,H6B),
 C7(H7A,H7B)
2.c Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C)
;
_olex2_submission_special_instructions 'No special instructions were received'