Co-Ln Mixed-Metal Phosphonate Grids and Cages as Molecular Magnetic Refrigerants
Yan-Zhen Zheng; Marco Evangelisti; Floriana Tuna; Richard E. P. Winpenny; Journal of the American Chemical Society 134 (2012) 1057–1065; doi:10.1021/ja208367k

data_4117281
_publ_section_title
;
 Co-Ln Mixed-Metal Phosphonate Grids and Cages as Molecular Magnetic
 Refrigerants
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1057
_journal_page_last               1065
_journal_paper_doi               10.1021/ja208367k
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C116 H174 Co4 N2 O46 P6 Tb6'
_chemical_formula_weight         3707.63
_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                 97.5500(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.3959(11)
_cell_length_b                   29.130(3)
_cell_length_c                   18.0769(15)
_cell_measurement_reflns_used    9969
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.26
_cell_measurement_theta_min      2.60
_cell_volume                     6992.9(11)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0365
_diffrn_reflns_av_sigmaI/netI    0.0378
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            51704
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.80
_exptl_absorpt_coefficient_mu    3.600
_exptl_absorpt_correction_T_max  0.5329
_exptl_absorpt_correction_T_min  0.2942
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.761
_exptl_crystal_description       block
_exptl_crystal_F_000             3680
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         4.376
_refine_diff_density_min         -2.188
_refine_diff_density_rms         0.213
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.197
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1036
_refine_ls_number_reflns         15193
_refine_ls_number_restraints     1473
_refine_ls_restrained_S_all      1.167
_refine_ls_R_factor_all          0.0735
_refine_ls_R_factor_gt           0.0644
_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^)+(0.0416P)^2^+129.8853P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1536
_refine_ls_wR_factor_ref         0.1582
_reflns_number_gt                13276
_reflns_number_total             15193
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja208367k_si_014.cif
_cod_data_source_block           cotbm
_cod_original_cell_volume        6992.8(10)
_cod_database_code               4117281