Molecular Germanium Selenophosphate Salts: Phase-Change Properties and Strong Second Harmonic Generation
Collin D. Morris; In Chung; Sungoh Park; Connor M. Harrison; Daniel J. Clark; Joon I. Jang; Mercouri G. Kanatzidis; Journal of the American Chemical Society 134 (2012) 20733–20744; doi:10.1021/ja309386e

data_4119039
_publ_section_title
;
 Molecular Germanium Selenophosphate Salts: Phase-Change Properties and
 Strong Second Harmonic Generation
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              20733
_journal_page_last               20744
_journal_paper_doi               10.1021/ja309386e
_journal_volume                  134
_journal_year                    2012
_chemical_formula_moiety         'Ge P4 S12, 4(Rb)'
_chemical_formula_sum            'Ge P4 Rb4 S12'
_chemical_formula_weight         923.07
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.622(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.3217(6)
_cell_length_b                   8.0462(3)
_cell_length_c                   23.5743(11)
_cell_measurement_reflns_used    8495
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.51
_cell_measurement_theta_min      1.76
_cell_volume                     2297.17(18)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 6.67
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'STOE IPDS 2'
_diffrn_measurement_method       'rotation method'
_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  0.0453
_diffrn_reflns_av_sigmaI/netI    0.0398
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            10664
_diffrn_reflns_theta_full        29.22
_diffrn_reflns_theta_max         29.22
_diffrn_reflns_theta_min         1.76
_exptl_absorpt_coefficient_mu    11.110
_exptl_absorpt_correction_T_max  0.7314
_exptl_absorpt_correction_T_min  0.2855
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.669
_exptl_crystal_description       plate
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.1583
_exptl_crystal_size_mid          0.0988
_exptl_crystal_size_min          0.0428
_refine_diff_density_max         0.520
_refine_diff_density_min         -0.582
_refine_diff_density_rms         0.110
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.136
_refine_ls_matrix_type           full
_refine_ls_number_parameters     96
_refine_ls_number_reflns         3083
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.136
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0403
_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^)+(0.0184P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0507
_refine_ls_wR_factor_ref         0.0536
_reflns_number_gt                2425
_reflns_number_total             3083
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja309386e_si_002_2.cif
_cod_data_source_block           rb4gep4s12
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4119039