Large second harmonic generation and birefringence from extended octupolar π-conjugated structures.
Dou, Danyang; Zhang, Bingbing; Yang, Daqing; Wang, Ying; Chemical science 15 (2024) 19496–19503; doi:10.1039/d4sc05756b

data_1572993
_publ_section_title
;
 Large second harmonic generation and birefringence from extended
 octupolar &#x3c0;-conjugated structures.
;
_journal_issue                   46
_journal_name_full               'Chemical science'
_journal_page_first              19496
_journal_page_last               19503
_journal_paper_doi               10.1039/d4sc05756b
_journal_volume                  15
_journal_year                    2024
_chemical_formula_sum            'C9 H6 N13 O3 Rb3'
_chemical_formula_weight         600.68
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_method
;FinalCif V121 by Daniel Kratzert, Freiburg 2024, 
https://dkratzert.de/finalcif.html
;
_audit_update_record
;
2024-08-02 deposited with the CCDC.	2024-11-01 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.8905(17)
_cell_length_b                   21.852(5)
_cell_length_c                   12.298(3)
_cell_measurement_reflns_used    9642
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      27.509
_cell_measurement_theta_min      3.2505
_cell_volume                     1851.7(8)
_computing_cell_refinement       'SAINT V8.40B'
_computing_data_collection
'Bruker BIS 8.5.0.27 Release/2023-03-20 && APEX5 2023.9-2'
_computing_data_reduction        'SAINT V8.40B'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      273(2)
_diffrn_detector                 CPAD
_diffrn_detector_area_resol_mean 7.41
_diffrn_detector_type            'Bruker PHOTON III'
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 VENTURE dual wavelength Mo/Cu'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_measurement_specimen_support 'MiTeGen micromount'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0341
_diffrn_reflns_av_unetI/netI     0.0237
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            24051
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.535
_diffrn_reflns_theta_min         3.100
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.4
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    7.941
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5889
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction: 
Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D., J. Appl. Cryst. 48 
(2015) 3-10
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.155
_exptl_crystal_description       block
_exptl_crystal_F_000             1144
_refine_diff_density_max         1.302
_refine_diff_density_min         -0.737
_refine_diff_density_rms         0.141
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.449(18)
_refine_ls_extinction_coef       0.0031(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.129
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         4248
_refine_ls_number_restraints     22
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.0388
_refine_ls_R_factor_gt           0.0357
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0609P)^2^+1.1938P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0964
_refine_ls_wR_factor_ref         0.0992
_reflns_Friedel_coverage         0.912
_reflns_Friedel_fraction_full    0.997
_reflns_Friedel_fraction_max     0.997
_reflns_number_gt                4004
_reflns_number_total             4248
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc05756b2.cif
_cod_data_source_block           mo_0307DDYK
_cod_depositor_comments
'Adding full bibliography for 1572993--1572994.cif.'
_cod_database_code               1572993
_shelx_shelxl_version_number     2018/3
_olex2_diffrn_ambient_temperature_device 'Oxford Cryostream 800'
_shelx_res_checksum              57927
_shelx_hkl_checksum              98792