On the Nature of the Structural and Magnetic Phase Transitions in the Layered Perovskite-Like (CH3NH3)2[Fe(II)Cl4].
Han, Jing; Nishihara, Sadafumi; Inoue, Katsuya; Kurmoo, Mohamedally; Inorganic chemistry 53 (2014) 2068–2075; doi:10.1021/ic402535u

data_4337221
_publ_section_title
;
 On the Nature of the Structural and Magnetic Phase Transitions in the
 Layered Perovskite-Like (CH3NH3)2[Fe(II)Cl4].
;
_journal_issue                   4
_journal_name_full               'Inorganic chemistry'
_journal_page_first              2068
_journal_page_last               2075
_journal_paper_doi               10.1021/ic402535u
_journal_volume                  53
_journal_year                    2014
_chemical_formula_sum            'C H6 Cl2 Fe0.5 N'
_chemical_formula_weight         130.89
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           56
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_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            8
_cell_length_a                   7.1798(7)
_cell_length_b                   7.1798(7)
_cell_length_c                   19.090(3)
_cell_measurement_temperature    200(2)
_cell_volume                     984.1(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0195
_diffrn_reflns_av_sigmaI/netI    0.0165
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            4385
_diffrn_reflns_theta_full        25.48
_diffrn_reflns_theta_max         25.48
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    2.549
_exptl_absorpt_correction_T_max  0.9508
_exptl_absorpt_correction_T_min  0.3100
_exptl_crystal_density_diffrn    1.767
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.226
_refine_diff_density_min         -0.341
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.300
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     46
_refine_ls_number_reflns         924
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.300
_refine_ls_R_factor_all          0.0219
_refine_ls_R_factor_gt           0.0211
_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^)+(0.0164P)^2^+0.9212P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0595
_refine_ls_wR_factor_ref         0.0613
_reflns_number_gt                910
_reflns_number_total             924
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            E-200k_Pccn.cif
_cod_data_source_block           E-200K-Pccn
_cod_original_cell_volume        984.05(19)
_cod_original_sg_symbol_H-M      '? P ccn'
_cod_original_formula_sum        'C H6 Cl2 Fe0.50 N'
_cod_database_code               4337221