[(C(2)H(5))(3)NH](2)Cu(2)(C(2)O(4))(3): a three-dimensional metal-oxalato framework showing structurally related dielectric and magnetic transitions at around 165 K.
Zhang, Bin; Zhang, Yan; Zhu, Daoben; Dalton transactions (Cambridge, England : 2003) 41 (2012) 8509–8511; doi:10.1039/c2dt30818e

data_7019624
_publ_section_title
;
 [(C(2)H(5))(3)NH](2)Cu(2)(C(2)O(4))(3): a three-dimensional metal-oxalato
 framework showing structurally related dielectric and magnetic
 transitions at around 165 K.
;
_journal_issue                   28
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8509
_journal_page_last               8511
_journal_paper_doi               10.1039/c2dt30818e
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C18 H32 Cu2 N2 O12'
_chemical_formula_weight         595.54
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 107.5780(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.69870(10)
_cell_length_b                   34.1408(4)
_cell_length_c                   8.60810(10)
_cell_measurement_reflns_used    34980
_cell_measurement_temperature    135(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      3.395
_cell_volume                     2437.07(5)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      135(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0268
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       44
_diffrn_reflns_limit_k_min       -44
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            27882
_diffrn_reflns_theta_full        27.54
_diffrn_reflns_theta_max         27.54
_diffrn_reflns_theta_min         3.42
_exptl_absorpt_coefficient_mu    1.808
_exptl_absorpt_correction_T_max  0.680
_exptl_absorpt_correction_T_min  0.584
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements
Sortav (Blessing 1995)
;
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.623
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       diamondiod
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.815
_refine_diff_density_min         -0.373
_refine_diff_density_rms         0.065
_refine_ls_extinction_coef       0.0026(4)
_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   1.101
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     319
_refine_ls_number_reflns         5518
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0371
_refine_ls_R_factor_gt           0.0308
_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^)+(0.0329P)^2^+2.1556P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0802
_refine_ls_wR_factor_ref         0.0823
_reflns_number_gt                4832
_reflns_number_total             5518
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt30818e.txt
_cod_data_source_block           135K
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7019624