An organic-inorganic hybrid perovskite material [Me<sub>3</sub>NCMe<sub>3</sub>]GaCl<sub>4</sub> exhibits a two-step off-on-off SHG response with a large temperature interval.
Yang, Zhao; Zeng, Yiyi; Chen, Guoyong; Sun, Xiao; Zhang, Haina; Cai, Hu; Wei, Zhenhong; Chemical communications (Cambridge, England) 60 (2024) 11992–11995; doi:10.1039/d4cc04031g

data_7133781
_publ_section_title
;
 An organic-inorganic hybrid perovskite material
 [Me<sub>3</sub>NCMe<sub>3</sub>]GaCl<sub>4</sub> exhibits a two-step
 off-on-off SHG response with a large temperature interval.
;
_journal_issue                   83
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              11992
_journal_page_last               11995
_journal_paper_doi               10.1039/d4cc04031g
_journal_volume                  60
_journal_year                    2024
_chemical_formula_moiety         'Cl4 Ga, C7 H18 N'
_chemical_formula_sum            'C7 H18 Cl4 Ga N'
_chemical_formula_weight         327.74
_space_group_crystal_system      orthorhombic
_space_group_IT_number           26
_space_group_name_Hall           'P 2c -2'
_space_group_name_H-M_alt        'P m c 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2024-09-02
_audit_creation_method
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Olex2 1.5
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2024-09-07 deposited with the CCDC.	2024-09-24 downloaded from the CCDC.
;
_cell_angle_alpha                90
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_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.3448(5)
_cell_length_b                   7.0749(6)
_cell_length_c                   14.0244(12)
_cell_measurement_reflns_used    2995
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.7460
_cell_measurement_theta_min      3.2170
_cell_volume                     728.76(10)
_computing_data_collection       CrysAlisPro
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.872
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0456
_diffrn_reflns_av_unetI/netI     0.0344
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.872
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7999
_diffrn_reflns_point_group_measured_fraction_full 0.984
_diffrn_reflns_point_group_measured_fraction_max 0.813
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.684
_diffrn_reflns_theta_min         2.879
_exptl_absorpt_coefficient_mu    2.583
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.40293
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
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CrysAlisPro 1.171.43.111a (Rigaku Oxford Diffraction, 2024)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.494
_exptl_crystal_description       block
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.190
_refine_diff_density_min         -0.595
_refine_diff_density_rms         0.119
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.05(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     135
_refine_ls_number_reflns         1973
_refine_ls_number_restraints     191
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.1088
_refine_ls_R_factor_gt           0.0792
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1707P)^2^+0.0396P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2302
_refine_ls_wR_factor_ref         0.2550
_reflns_Friedel_coverage         0.795
_reflns_Friedel_fraction_full    0.969
_reflns_Friedel_fraction_max     0.749
_reflns_number_gt                1293
_reflns_number_total             1973
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4cc04031g2.cif
_cod_data_source_block           t_CCDC3
_cod_depositor_comments
'Adding full bibliography for 7133779--7133781.cif.'
_cod_database_code               7133781
_shelx_shelxl_version_number     2018/3
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.46709
 0.53291
2. Restrained distances
 N1-C4 = N1-C2 = N1-C1 = N1-C3 = C7-C4 = C5-C4 = C6-C4
 1.55 with sigma of 0.02
 C1-C2 \\sim C1-C3 \\sim C1-C4 \\sim C2-C3 \\sim C2-C4 \\sim C3-C4
 with sigma of 0.01
 N1-C5 \\sim N1-C6 \\sim N1-C7 \\sim C5-C6 \\sim C5-C7 \\sim C6-C7
 with sigma of 0.01
 Ga1-Cl1A \\sim Ga1-Cl1
 with sigma of 0.02
 Ga1-Cl2 \\sim Ga1-Cl2A
 with sigma of 0.02
 Ga1-Cl3A \\sim Ga1-Cl3
 with sigma of 0.02
3. Uiso/Uaniso restraints and constraints
C5 \\sim C3 \\sim N1 \\sim C6 \\sim C1 \\sim C2 \\sim C4 \\sim C7: within 2A
with sigma of 0.01 and sigma for terminal atoms of 0.02 within 2A
Ga1 \\sim Cl1A \\sim Cl1 \\sim Cl3 \\sim Cl3A \\sim Cl2A \\sim Cl2: within 2A
with sigma of 0.02 and sigma for terminal atoms of 0.04 within 2A
Uanis(C5) \\sim Ueq, Uanis(C3) \\sim Ueq, Uanis(N1) \\sim Ueq, Uanis(C6) \\sim
Ueq, Uanis(C1) \\sim Ueq, Uanis(C2) \\sim Ueq, Uanis(C4) \\sim Ueq, Uanis(C7)
\\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
Uanis(Ga1) \\sim Ueq, Uanis(Cl1A) \\sim Ueq, Uanis(Cl1) \\sim Ueq, Uanis(Cl3)
\\sim Ueq, Uanis(Cl3A) \\sim Ueq, Uanis(Cl2A) \\sim Ueq, Uanis(Cl2) \\sim Ueq:
with sigma of 0.02 and sigma for terminal atoms of 0.04
4. Others
 Sof(Cl1A)=1-FVAR(1)
 Sof(Cl3A)=Sof(Cl2A)=0.5*(1-FVAR(2))
 Sof(Cl2)=Sof(Cl3)=0.5*FVAR(2)
 Sof(Cl1)=FVAR(1)
 Fixed Sof: N1(0.5) C1(0.5) H1A(0.5) H1B(0.5) H1C(0.5) C2(0.5) H2A(0.5)
 H2B(0.5) H2C(0.5) C3(0.5) H3A(0.5) H3B(0.5) H3C(0.5) C5(0.5) H5A(0.5) H5B(0.5)
 H5C(0.5) C4(0.5) C6(0.5) H6A(0.5) H6B(0.5) H6C(0.5) C7(0.5) H7A(0.5) H7B(0.5)
 H7C(0.5)
5.a Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C2(H2A,H2B,H2C), C3(H3A,H3B,H3C), C5(H5A,H5B,H5C), C6(H6A,
 H6B,H6C), C7(H7A,H7B,H7C)
;
_olex2_submission_special_instructions 'No special instructions were received'