Strong spin frustration and negative magnetization in LnCu3(OH)6Cl3 (Ln = Nd and Sm) with triangular lattices: The effects of lanthanides
Sun, Wei; Huang, Ya-Xi; Pan, Yuanming; Mi, Jin-Xiao; Dalton Trans.  (2017) –; doi:10.1039/C7DT01798G

data_7043489
_publ_section_title
;
 Strong spin frustration and negative magnetization in LnCu3(OH)6Cl3 (Ln =
 Nd and Sm) with triangular lattices: The effects of lanthanides
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT01798G
_journal_year                    2017
_chemical_formula_sum            'Cl3 Cu3 Gd H6 O6'
_chemical_formula_weight         556.27
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      trigonal
_space_group_IT_number           164
_space_group_name_Hall           '-P 3 2"'
_space_group_name_H-M_alt        'P -3 m 1'
_symmetry_space_group_name_Hall  '-P 3 2"'
_symmetry_space_group_name_H-M   'P -3 m 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   6.7982(4)
_cell_length_b                   6.7982(4)
_cell_length_c                   5.6062(3)
_cell_measurement_reflns_used    3098
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.768
_cell_measurement_theta_min      3.460
_cell_volume                     224.38(2)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT (Bruker, 2001)'
_computing_molecular_graphics
'DIAMOND (Brandenburg, 2011) and ATOMS (Dowty, 2004)'
_computing_publication_material  'SHELXL-2013 (Sheldrick, 2015)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS-2013 (Sheldrick, 2015)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Diffraction CCD area-detector'
_diffrn_measurement_method
'1265 images,\f=0, 90, 180 degree, and \D\w=0.3 degree, \c= 54.74 degree'
_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  0.0217
_diffrn_reflns_av_unetI/netI     0.0089
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            3098
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.768
_diffrn_reflns_theta_min         3.460
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    15.185
_exptl_absorpt_correction_T_max  0.763
_exptl_absorpt_correction_T_min  0.536
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SMART (Bruker, 2001)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    4.117
_exptl_crystal_description       prism
_exptl_crystal_F_000             256
_exptl_crystal_size_max          0.130
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.872
_refine_diff_density_min         -0.370
_refine_diff_density_rms         0.083
_refine_ls_extinction_coef       0.0153(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     22
_refine_ls_number_reflns         244
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0091
_refine_ls_R_factor_gt           0.0091
_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^)+(0.0128P)^2^+0.3683P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0255
_refine_ls_wR_factor_ref         0.0255
_reflns_Friedel_coverage         0.000
_reflns_number_gt                244
_reflns_number_total             244
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt01798g2.cif
_cod_data_source_block           gdcu3
_cod_original_cell_volume        224.38(3)
_cod_database_code               7043489
_shelx_estimated_absorpt_t_min   0.243
_shelx_estimated_absorpt_t_max   0.263
_shelxl_version_number           2013-2
_shelx_res_checksum              29017
_shelx_hkl_checksum              61005