Synthesis and Magnetic Properties of a Series of Octanuclear [Fe6Ln2] Nanoclusters
Han, Song-De; Liu, Sui-Jun; Wang, Qing-Lun; Miao, Xiao-Hong; Hu, Tong-Liang; Bu, Xian-He; Crystal Growth & Design 15 (2015) 2253–; doi:10.1021/acs.cgd.5b00024

data_4513132
_publ_section_title
;
 Synthesis and Magnetic Properties of a Series of Octanuclear [Fe6Ln2]
 Nanoclusters
;
_journal_issue                   5
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2253
_journal_paper_doi               10.1021/acs.cgd.5b00024
_journal_volume                  15
_journal_year                    2015
_chemical_formula_sum            'C82 H152 Fe6 Gd2 N4 O38'
_chemical_formula_weight         2451.67
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 92.11(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   16.827(3)
_cell_length_b                   19.675(4)
_cell_length_c                   17.994(4)
_cell_measurement_temperature    293(2)
_cell_volume                     5953(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0546
_diffrn_reflns_av_sigmaI/netI    0.0431
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            49182
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    1.878
_exptl_absorpt_correction_T_max  0.754
_exptl_absorpt_correction_T_min  0.656
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.368
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2520
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_platon_squeeze_details
;
The PLATON SQUEEZE procedure was used to treat 
regions of diffuse solvent which could not be modeled 
properly in terms of atomic sites. Their contribution to 
the diffraction pattern was removed and modified F^2^ was
written to a new HKL file. The number of located electrons in one void per unit cell 
is 140. There are two formula units in one unit cell. 
On base of charge balance considerations, volume/count_electrons 
analysis, TG analyses and elemental analyses, this residual electron density 
was assigned to half dimethylformamide molecule,one ethanol molecule and two and half water molecules. 
So SQUEEZE removed these disordered units per unit cell. 
See refs. (a) O. V. Dolomanov, D. B. Cordes, N. R. Champness, A. J. Blake,
L. R. Hanton, G. B. Jameson, M. Schroder and C. Wilson. Chem. Commun.
2004, 642; (b) Y. Du, A. L. Thompson and D. O. Hare. Chem. Commun. 2008, 5987;
(c) Y. F. Bi, X. T. Wang, W. P. Liao, X. F. Wang, X. W. Wang, H. J. Zhang,
and S. Gao, J. Am. Chem. Soc. 2009, 131, 11650.
;
_refine_diff_density_max         0.916
_refine_diff_density_min         -0.591
_refine_diff_density_rms         0.097
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     656
_refine_ls_number_reflns         10448
_refine_ls_number_restraints     1976
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0636
_refine_ls_R_factor_gt           0.0488
_refine_ls_shift/su_max          0.033
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0594P)^2^+17.1244P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1180
_refine_ls_wR_factor_ref         0.1253
_reflns_number_gt                8465
_reflns_number_total             10448
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg5b00024_si_002.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/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
/usr/data/users/saulius/crontab/automatic-downloads/current/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 3271 2015-04-21 07:52:19Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4513132