Cyclic Trinuclear and Chain of Cyclic Trinuclear Copper(II) Complexes Containing a Pyramidal Cu3O(H) Core. Crystal Structures and Magnetic Properties of [Cu3(μ3-OH)(aaat)3(H2O)3](NO3)2.H2O [aaat = 3-Acetylamino-5-amino-1,2,4-triazolate] and {[Cu3(μ3-OH)(aat)3(μ3-SO4)].6H2O}n [aat = 3-Acetylamino-1,2,4-triazolate]: New Cases of Spin-Frustrated Systems
Sacramento Ferrer; Francesc Lloret; Ignacio Bertomeu; Gloria Alzuet; Joaquín Borrás; Santiago García-Granda; Malva Liu-González; Jaap G. Haasnoot; Inorganic Chemistry 41 (2002) 5821–5830; doi:10.1021/ic020179+

data_4327530
_publ_contact_author
;     Santiago Garc\'ia-Granda
      Departamento de Qu\'imica F\'isica y Anal\'itica
      Facultad de Qu\'imica
      Universidad de Oviedo
      Avda. Juli\'an Claver\'ia, 8
      33071 Oviedo
      Spain
;
_publ_contact_author_email       sgg@sauron.quimica.uniovi.es
_publ_contact_author_fax         '0034 98 5103125'
_publ_contact_author_phone       '0034 98 5103477'
_publ_section_title
;
 Cyclic Trinuclear and Chain of Cyclic Trinuclear Copper(II) Complexes
 Containing a Pyramidal Cu3O(H) Core. Crystal Structures and Magnetic
 Properties of [Cu3(\m3-OH)(aaat)3(H2O)3](NO3)2.H2O [aaat =
 3-Acetylamino-5-amino-1,2,4-triazolate] and
 {[Cu3(\m3-OH)(aat)3(\m3-SO4)].6H2O}n [aat =
 3-Acetylamino-1,2,4-triazolate]: New Cases of Spin-Frustrated Systems
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5821
_journal_page_last               5830
_journal_paper_doi               10.1021/ic020179+
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C12 H27 Cu3 N17 O14'
_chemical_formula_weight         824.13
_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                70.43(3)
_cell_angle_beta                 75.105(15)
_cell_angle_gamma                88.425(15)
_cell_formula_units_Z            2
_cell_length_a                   8.8518(12)
_cell_length_b                   11.491(3)
_cell_length_c                   15.404(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      10.13
_cell_measurement_theta_min      1.6
_cell_volume                     1423.8(6)
_computing_cell_refinement       'CAD4 Software (Nonius,1996)'
_computing_data_collection       'CAD4 Software (Nonius,1996)'
_computing_data_reduction        'XCAD4(Harms & Wocadlo,1995)'
_computing_molecular_graphics    'ORTEP-III Burnett & Johnson,1996)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare & al. (1999) '
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  CAD4
_diffrn_measurement_method       'non-profiled omega/2theta 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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0532
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4989
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.45
_diffrn_standards_decay_%        5.3
_diffrn_standards_interval_count 1000
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.315
_exptl_absorpt_correction_T_max  0.700
_exptl_absorpt_correction_T_min  0.651
_exptl_absorpt_correction_type   psi-scans
_exptl_absorpt_process_details   '(North, Phillips and Mathews, 1968)'
_exptl_crystal_colour            'dark green'
_exptl_crystal_density_diffrn    1.922
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             834
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.672
_refine_diff_density_min         -1.542
_refine_diff_density_rms         0.281
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.112
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     452
_refine_ls_number_reflns         4989
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.113
_refine_ls_R_factor_all          0.1130
_refine_ls_R_factor_gt           0.0822
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2299
_refine_ls_wR_factor_ref         0.2872
_reflns_number_gt                3432
_reflns_number_total             4989
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0201792B_2.cif
_cod_data_source_block           1
_cod_original_cell_volume        1423.8(5)
_cod_database_code               4327530