Cerium(IV)-Lanthanide(III)-Pyridine-2,6-dicarboxylic Acid System: Coordination Salts, Chains, and Rings
T. K. Prasad; M. V. Rajasekharan; Inorganic Chemistry 48 (2009) 11543–11550; doi:10.1021/ic901066v

data_4303801
_publ_contact_author_address
;School of Chemistry,
University of Hyderabad,
Hyderabad-500046,
India.
;
_publ_contact_author_email       mvrsc@uohyd.ernet.in
_publ_contact_author_fax         +91-40-2301-2460
_publ_contact_author_name        'Rajasekharan, M. V.'
_publ_contact_author_phone       +91-40-2313-4857
_publ_section_title
;
Cerium(IV)-Lanthanide(III)-Pyridine-2,6-dicarboxylic Acid System:
Coordination Salts, Chains, and Rings
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              11543
_journal_page_last               11550
_journal_paper_doi               10.1021/ic901066v
_journal_volume                  48
_journal_year                    2009
_chemical_formula_moiety         'C28 H20 Ce2 N4 O20, 7(H2 O)'
_chemical_formula_sum            'C28 H35 Ce2 N4 O27'
_chemical_formula_weight         1138.83
_chemical_name_systematic
;
 ?
;
_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                97.751(3)
_cell_angle_beta                 119.078(2)
_cell_angle_gamma                91.028(2)
_cell_formula_units_Z            2
_cell_length_a                   12.8074(16)
_cell_length_b                   13.1348(16)
_cell_length_c                   13.143(2)
_cell_measurement_reflns_used    7340
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.76
_cell_measurement_theta_min      2.59
_cell_volume                     1905.7(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'ORTEP-III (Burnett & Johnson, 1996)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.924
_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  0.0604
_diffrn_reflns_av_sigmaI/netI    0.0476
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            22041
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         1.57
_exptl_absorpt_coefficient_mu    2.466
_exptl_absorpt_correction_T_max  0.527
_exptl_absorpt_correction_T_min  0.409
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            'pale orange'
_exptl_crystal_density_diffrn    1.985
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1124
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.26
_refine_diff_density_max         1.910
_refine_diff_density_min         -1.036
_refine_diff_density_rms         0.133
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.214
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     560
_refine_ls_number_reflns         8815
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.214
_refine_ls_R_factor_all          0.0528
_refine_ls_R_factor_gt           0.0500
_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^)+(0.0312P)^2^+6.9225P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1145
_refine_ls_wR_factor_ref         0.1160
_reflns_number_gt                8404
_reflns_number_total             8815
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic901066v_si_002_02.cif
_cod_data_source_block           2
_cod_original_cell_volume        1905.7(5)
_cod_database_code               4303801