Magnetic refrigeration and slow magnetic relaxation in tetranuclear lanthanide cages (Ln = Gd, Dy) with in situ ligand transformation
Sheikh, Javeed Ahmad; Adhikary, Amit; Konar, Sanjit; New Journal of Chemistry 38 (2014) 3006–; doi:10.1039/c4nj00349g

data_7054299
_publ_section_title
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 Magnetic refrigeration and slow magnetic relaxation in tetranuclear
 lanthanide cages (Ln = Gd, Dy) with in situ ligand transformation
;
_journal_issue                   7
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              3006
_journal_paper_doi               10.1039/c4nj00349g
_journal_volume                  38
_journal_year                    2014
_chemical_formula_moiety         'C86 H64 Gd4 N20 O20'
_chemical_formula_sum            'C86 H64 Gd4 N20 O20'
_chemical_formula_weight         2326.58
_chemical_name_systematic
; 
 ? 
;
_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                 92.249(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.799(2)
_cell_length_b                   21.032(3)
_cell_length_c                   32.997(5)
_cell_measurement_reflns_used    18994
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      17.27
_cell_measurement_theta_min      2.44
_cell_volume                     10262(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.00
_diffrn_measured_fraction_theta_max 1.00
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.1323
_diffrn_reflns_av_sigmaI/netI    0.1206
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            64459
_diffrn_reflns_theta_full        25.45
_diffrn_reflns_theta_max         25.45
_diffrn_reflns_theta_min         2.38
_exptl_absorpt_coefficient_mu    2.622
_exptl_absorpt_correction_T_max  0.480
_exptl_absorpt_correction_T_min  0.346
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   multi-scan
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.506
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             4544
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.28
_refine_diff_density_max         1.305
_refine_diff_density_min         -1.318
_refine_diff_density_rms         0.145
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1184
_refine_ls_number_reflns         18994
_refine_ls_number_restraints     602
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.1276
_refine_ls_R_factor_gt           0.0741
_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^)+(0.1000P)^2^+0.6634P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1763
_refine_ls_wR_factor_ref         0.1960
_reflns_number_gt                14843
_reflns_number_total             18994
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4nj00349g2.cif
_cod_data_source_block           complex1
_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/RSC/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               7054299