An in situ high-temperature scanning electron microscopy study of acanthite-argentite phase transformation in nanocrystalline silver sulfide powder.
Sadovnikov, S. I.; Gusev, A. I.; Rempel, A. A.; Physical chemistry chemical physics : PCCP 17 (2015) 20495–20501; doi:10.1039/c5cp02499d

data_7221650
_publ_section_title
;
 An in situ high-temperature scanning electron microscopy study of
 acanthite-argentite phase transformation in nanocrystalline silver
 sulfide powder.
;
_journal_issue                   32
_journal_name_full               'Physical chemistry chemical physics : PCCP'
_journal_page_first              20495
_journal_page_last               20501
_journal_paper_doi               10.1039/c5cp02499d
_journal_volume                  17
_journal_year                    2015
_chemical_compound_source
;
Institute of Solid State Chemistry, Ekaterinburg (Russia)  
;
_chemical_formula_analytical     'Ag2 S'
_chemical_formula_moiety         'Ag2 S'
_chemical_formula_structural     'S2 Ag4'
_chemical_formula_sum            'Ag2 S'
_chemical_formula_weight         247.795
_chemical_name_common            Argentite
_chemical_name_mineral           Argentite
_chemical_name_systematic        'Silver sulfide'
_space_group_crystal_system      cubic
_space_group_IT_number           229
_space_group_name_H-M_alt        'I m -3 m'
_symmetry_cell_setting           cubic
_symmetry_Int_Tables_number      229
_symmetry_space_group_name_Hall  '-I 4 2 3'
_symmetry_space_group_name_H-M   'I m -3 m'
_audit_creation_date             '14.07.2015 12:16:14'
_audit_creation_method
;
Generated by PHILIPS XPert Plus 1.0. Program for Crystallography and 
Rietveld analysis Philips Analytical B. V. 
(C) 1999 Koninklijke Philips Electronics N. V.
;
_audit_update_record
;
2015-07-14 deposited with the CCDC.
2015-07-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   4.874100
_cell_length_b                   4.874100
_cell_length_c                   4.874100
_cell_measurement_temperature    503
_cell_volume                     115.793
_diffrn_ambient_temperature      503
_diffrn_measurement_device_type  'PHILIPS XPERT-PRO'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54188
_diffrn_reflns_av_R_equivalents  0.000754
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       4
_diffrn_reflns_limit_l_min       1
_diffrn_reflns_number            2384
_diffrn_reflns_theta_max         81.970
_diffrn_reflns_theta_min         20.012
_diffrn_source_target            Cu
_exptl_absorpt_coefficient_mu    140
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    7.11
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       powder
_exptl_crystal_F_000             220
_pd_calc_method                  'Rietveld Refinement'
_pd_char_colour                  black
_pd_meas_2theta_range_inc        0.026
_pd_meas_2theta_range_max        81.970
_pd_meas_2theta_range_min        20.012
_pd_meas_number_of_points        2384
_pd_proc_2theta_range_inc        0.026
_pd_proc_2theta_range_max        81.970
_pd_proc_2theta_range_min        20.012
_pd_proc_info_datetime           2015-04-21T14:40
_pd_proc_ls_prof_R_factor        0.01645
_pd_proc_ls_prof_wR_expected     0.01405
_pd_proc_ls_prof_wR_factor       0.02071
_pd_proc_number_of_points        2384
_pd_spec_mounting                powder
_pd_spec_mount_mode              reflection
_refine_ls_goodness_of_fit_all   1.872
_refine_ls_goodness_of_fit_ref   1.872
_refine_ls_number_parameters     28
_refine_ls_number_reflns         16
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.00986
_refine_ls_R_factor_gt           0.00754
_refine_ls_R_I_factor            0.00754
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_wR_factor_ref         0.02071
_reflns_d_resolution_high        1.217
_reflns_d_resolution_low         3.461
_reflns_limit_h_max              2
_reflns_limit_h_min              0
_reflns_limit_k_max              2
_reflns_limit_k_min              0
_reflns_limit_l_max              4
_reflns_limit_l_min              1
_reflns_number_observed          16
_reflns_number_total             8
_cod_data_source_file            c5cp02499d3.cif
_cod_data_source_block           Im-3m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Cubic' changed to 'cubic' according
to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 7221650.cif.
;
_cod_original_sg_symbol_H-M      Im-3m
_cod_database_code               7221650