Preparation and characterization of [H3N(CH2)6NH3]PbI4 and similar compounds with a layered perovskite structure
Mousdis, G. A.; Papavassiliou, G. C.; Raptopoulou, C. P.; Terzis, A.; Journal of Materials Chemistry 10 (2000) 515–; doi:10.1039/a906161d

data_7203880
_publ_section_title
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 Preparation and characterization of [H3N(CH2)6NH3]PbI4 and similar
 compounds with a layered perovskite structure
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_journal_issue                   2
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              515
_journal_paper_doi               10.1039/a906161d
_journal_volume                  10
_journal_year                    2000
_chemical_formula_analytical     '[H3N-(CH2)6-NH3]PbBr4'
_chemical_formula_sum            'C6 H18 Br4 N2 Pb'
_chemical_formula_weight         645.06
_chemical_name_systematic
; 
 ? 
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_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
_cell_angle_alpha                90.00
_cell_angle_beta                 105.66(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.02(1)
_cell_length_b                   8.045(8)
_cell_length_c                   8.342(9)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298
_cell_measurement_theta_max      11.7
_cell_measurement_theta_min      5.3
_cell_volume                     776.7(13)
_computing_cell_refinement
'Program LEAST (UCLA Crystallographic package, C.E.Strouse, 1994)'
_computing_data_collection
'Program COLLECT (UCLA Crystallographic package, C.E.Strouse, 1994)'
_computing_data_reduction
'Program REDUCE (UCLA Crystallographic package, C.E.Strouse, 1994)'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298
_diffrn_measurement_device
'Crystal Logic Dual Goniometer diffractometer'
_diffrn_measurement_method       'theta-2theta scans'
_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  0.0402
_diffrn_reflns_av_sigmaI/netI    0.0441
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            702
_diffrn_reflns_theta_max         19.50
_diffrn_reflns_theta_min         3.08
_diffrn_standards_decay_%        0.3
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    21.122
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.31
_exptl_absorpt_correction_type   'psi-scan empirical'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.758
_exptl_crystal_description       parallelipiped
_exptl_crystal_F_000             580
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.531
_refine_diff_density_min         -1.389
_refine_diff_density_rms         0.130
_refine_ls_extinction_coef       0.012(1)
_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_all   1.093
_refine_ls_goodness_of_fit_obs   1.113
_refine_ls_matrix_type           full
_refine_ls_number_parameters     62
_refine_ls_number_reflns         651
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.093
_refine_ls_restrained_S_obs      1.113
_refine_ls_R_factor_all          0.0427
_refine_ls_R_factor_obs          0.0333
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0108P)^2^+7.8735P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0887
_refine_ls_wR_factor_obs         0.0828
_reflns_number_observed          556
_reflns_number_total             651
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            a906161d.txt
_cod_data_source_block           2
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0108P)^2^+7.8735P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0108P)^2^+7.8735P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_original_cell_volume        777(2)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7203880