Lanthanide-3d cyanometalate chains Ln(III)-M(III) (Ln=Pr, Nd, Sm, Eu, Gd, Tb; M=Fe) with the tridentate ligand 2,4,6-tri(2-pyridyl)-1,3,5-triazine (tptz): evidence of ferromagnetic interactions for the Sm(III)-M(III) compounds (M=Fe, Cr).
Zhao, Hanhua; Lopez, Nazario; Prosvirin, Andrey; Chifotides, Helen T.; Dunbar, Kim R.; Dalton transactions (Cambridge, England : 2003)  (2007) 878–888; doi:10.1039/b616016f

data_7005067
_publ_section_title
;
 Lanthanide-3d cyanometalate chains Ln(III)-M(III) (Ln=Pr, Nd, Sm, Eu,
 Gd, Tb; M=Fe) with the tridentate ligand
 2,4,6-tri(2-pyridyl)-1,3,5-triazine (tptz): evidence of ferromagnetic
 interactions for the Sm(III)-M(III) compounds (M=Fe, Cr).
;
_journal_issue                   8
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              878
_journal_page_last               888
_journal_paper_doi               10.1039/b616016f
_journal_year                    2007
_chemical_formula_moiety         '[Sm(tptz)(H2O)4Fe(CN)6]8H2O'
_chemical_formula_sum            'C24 H36 Fe N12 O12 Sm'
_chemical_formula_weight         890.85
_chemical_name_common
;
Catena-(trans-biscyano-tetra-agua-(2,4,6-tri(2-pyridyl)-1,3,5-
triazine)-tetracyano-iron(iii)-samarium(iii) octahydrate
;
_space_group_IT_number           15
_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                 103.19(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.897(3)
_cell_length_b                   14.130(3)
_cell_length_c                   31.522(6)
_cell_measurement_temperature    173(2)
_cell_volume                     6894(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.913
_diffrn_measured_fraction_theta_max 0.913
_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  0.0375
_diffrn_reflns_av_sigmaI/netI    0.0874
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            20560
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    2.183
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.717
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             3584
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         2.244
_refine_diff_density_min         -1.535
_refine_diff_density_rms         0.214
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     451
_refine_ls_number_reflns         7815
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0822
_refine_ls_R_factor_gt           0.0639
_refine_ls_shift/su_max          0.364
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0720P)^2^+75.6801P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1571
_refine_ls_wR_factor_ref         0.1711
_reflns_number_gt                6122
_reflns_number_total             7815
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b616016f.txt
_cod_data_source_block           compound3
_cod_original_cell_volume        6894(2)
_cod_database_code               7005067