Large Second-Harmonic Generation Responses Achieved by the Dimeric [Ge2Se4(μ-Se2)]4‒ Functional Motif in Polar Polyselenides A4Ge4Se12 (A = Rb, Cs)
Liu, Bin-Wen; Zhang, Min-Yi; Jiang, Xiao-Ming; Li, Shu-Fang; Zeng, Hui-Yi; Wang, Guo-Qiang; Fan, Yu-Hang; Su, Yong-Fei; Li, Chunsen; Guo, Guo-Cong; Huang, Jin-Shun; Chemistry of Materials 29 (2017) 9200–; doi:10.1021/acs.chemmater.7b03046

data_4002867
_publ_section_title
;
 Large Second-Harmonic Generation Responses Achieved by the Dimeric
 [Ge2Se4(\m-Se2)]4-- Functional Motif in Polar Polyselenides A4Ge4Se12 (A
 = Rb, Cs)
;
_journal_issue                   21
_journal_name_full               'Chemistry of Materials'
_journal_page_first              9200
_journal_paper_doi               10.1021/acs.chemmater.7b03046
_journal_volume                  29
_journal_year                    2017
_chemical_formula_moiety         Rb4Ge4Se12
_chemical_formula_sum            'Ge4 Rb4 Se12'
_chemical_formula_weight         1579.76
_chemical_melting_point          ?
_chemical_name_common            Rb4Ge4Se12
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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            4
_cell_length_a                   14.870(8)
_cell_length_b                   13.800(8)
_cell_length_c                   12.445(6)
_cell_measurement_reflns_used    4963
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.5127
_cell_measurement_theta_min      2.1336
_cell_volume                     2554(2)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 14.6306
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku Mercury CCD'
_diffrn_measurement_method       CCD_Profile_fitting
_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  0.0651
_diffrn_reflns_av_sigmaI/netI    0.0588
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            16201
_diffrn_reflns_theta_full        25.48
_diffrn_reflns_theta_max         25.48
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    29.327
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.4977
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    4.109
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             2736
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.626
_refine_diff_density_min         -1.032
_refine_diff_density_rms         0.219
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         4646
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0680
_refine_ls_R_factor_gt           0.0473
_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^)+(0.0353P)^2^+8.3931P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0938
_refine_ls_wR_factor_ref         0.1038
_reflns_number_gt                3532
_reflns_number_total             4646
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm7b03046_si_002.cif
_cod_data_source_block           Rb4Ge4Se12
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/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 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 4002867--4002868.cif.
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               4002867