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_4117273
_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            'C123 H191 Co4 Dy6 N3 O50 P6'
_chemical_formula_weight         3908.33
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                100.140(2)
_cell_angle_beta                 102.999(2)
_cell_angle_gamma                96.596(2)
_cell_formula_units_Z            2
_cell_length_a                   15.2822(19)
_cell_length_b                   19.968(3)
_cell_length_c                   28.174(4)
_cell_measurement_temperature    100(2)
_cell_volume                     8139(2)
_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 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0827
_diffrn_reflns_av_sigmaI/netI    0.1311
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            49215
_diffrn_reflns_theta_full        23.25
_diffrn_reflns_theta_max         23.25
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    3.247
_exptl_absorpt_correction_T_max  0.8545
_exptl_absorpt_correction_T_min  0.3228
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.595
_exptl_crystal_description       needle
_exptl_crystal_F_000             3888
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.05
_refine_diff_density_max         6.440
_refine_diff_density_min         -2.810
_refine_diff_density_rms         0.326
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.147
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1675
_refine_ls_number_reflns         23231
_refine_ls_number_restraints     2636
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.1754
_refine_ls_R_factor_gt           0.1266
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1277P)^2^+343.9973P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2948
_refine_ls_wR_factor_ref         0.3222
_reflns_number_gt                15218
_reflns_number_total             23231
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja208367k_si_006.cif
_cod_data_source_block           codym
_cod_original_cell_volume        8138.7(18)
_cod_database_code               4117273