Two Series of Novel Rare Earth Complexes with Dicyanamide [Ln(dca)2(phen)2(H2O)3][dca].(phen), (Ln = Pr, Gd, and Sm) and [Ln(dca)3(2,2'-bipy)2(H2O)]n, (Ln = Gd, Sm, and La): Syntheses, Crystal Structures, and Magnetic Properties
A-Qing Wu; Fa-Kun Zheng; Wen-Tong Chen; Li-Zhen Cai; Guo-Cong Guo; Jin-Shun Huang; Zhen-Chao Dong; Yoshihiko Takano; Inorganic Chemistry 43 (2004) 4839–4845; doi:10.1021/ic035470j

data_4311392
_publ_section_title
;
 Two Series of Novel Rare Earth Complexes with Dicyanamide
 [Ln(dca)2(phen)2(H2O)3][dca].(phen), (Ln = Pr, Gd, and Sm) and
 [Ln(dca)3(2,2'-bipy)2(H2O)]n, (Ln = Gd, Sm, and La): Syntheses, Crystal
 Structures, and Magnetic Properties
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4839
_journal_page_last               4845
_journal_paper_doi               10.1021/ic035470j
_journal_volume                  43
_journal_year                    2004
_chemical_formula_sum            'C26 H18 N13 O Sm'
_chemical_formula_weight         678.88
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           52
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2a 2bc'
_symmetry_space_group_name_H-M   'P n n a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.378(2)
_cell_length_b                   15.625(3)
_cell_length_c                   16.048(3)
_cell_measurement_temperature    293(2)
_cell_volume                     2853.0(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_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  0.0470
_diffrn_reflns_av_sigmaI/netI    0.0438
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            15342
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.37
_exptl_absorpt_coefficient_mu    2.103
_exptl_crystal_density_diffrn    1.581
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1340
_refine_diff_density_max         1.914
_refine_diff_density_min         -1.073
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     187
_refine_ls_number_reflns         2497
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0517
_refine_ls_R_factor_gt           0.0429
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0561P)^2^+12.4486P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1097
_refine_ls_wR_factor_ref         0.1218
_reflns_number_gt                2063
_reflns_number_total             2497
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic035470jsi20040331_103407.cif
_cod_data_source_block           52
_cod_original_cell_volume        2853.0(10)
_cod_database_code               4311392