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_4117284
_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            'C112 H224 Co8 N4 O74 P8 Y8'
_chemical_formula_weight         4241.43
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 101.427(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   35.477(7)
_cell_length_b                   20.541(5)
_cell_length_c                   25.020(6)
_cell_measurement_temperature    100(2)
_cell_volume                     17871(7)
_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 0.977
_diffrn_measured_fraction_theta_max 0.977
_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  0.0602
_diffrn_reflns_av_sigmaI/netI    0.0741
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -42
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            61490
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.83
_exptl_absorpt_coefficient_mu    3.440
_exptl_absorpt_correction_T_max  0.6445
_exptl_absorpt_correction_T_min  0.1770
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            block
_exptl_crystal_density_diffrn    1.576
_exptl_crystal_description       needle
_exptl_crystal_F_000             8656
_exptl_crystal_size_max          0.77
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.14
_refine_diff_density_max         2.356
_refine_diff_density_min         -2.419
_refine_diff_density_rms         0.159
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.104
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1343
_refine_ls_number_reflns         15399
_refine_ls_number_restraints     2068
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.1790
_refine_ls_R_factor_gt           0.1116
_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^)+(0.0493P)^2^+843.2839P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2271
_refine_ls_wR_factor_ref         0.2824
_reflns_number_gt                9372
_reflns_number_total             15399
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja208367k_si_017.cif
_cod_data_source_block           com
_cod_database_code               4117284