Structural Variation from Heterometallic Heptanuclear, Heptanuclear to Cubane Clusters Based on 2-hydroxy-3-ethoxy-benzaldehyde: Effects of pH and Temperature
zhang, shu hua; Zhao, Ru-Xiao; li, gui; ZHANG, hai yang; Zhang, Chun Lian; Muller, Gilles; RSC Adv.  (2014) –; doi:10.1039/C4RA09687H

data_7218418
_publ_section_title
;
 Structural Variation from Heterometallic Heptanuclear, Heptanuclear to
 Cubane Clusters Based on 2-hydroxy-3-ethoxy-benzaldehyde: Effects of pH
 and Temperature
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA09687H
_journal_year                    2014
_chemical_formula_moiety         'C44 H64 Co4 O20, 2(H2 O) '
_chemical_formula_sum            'C44 H68 Co4 O22'
_chemical_formula_weight         1184.70
_space_group_IT_number           130
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4a 2ac'
_symmetry_space_group_name_H-M   'P 4/n c c :2'
_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                   17.0166(4)
_cell_length_b                   17.0166(4)
_cell_length_c                   18.7995(8)
_cell_measurement_reflns_used    3915
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.51
_cell_measurement_theta_min      3.935
_cell_volume                     5443.7(3)
_computing_cell_refinement       'Bruker FRAMBO'
_computing_data_collection       'Bruker FRAMBO'
_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      293(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Eos'
_diffrn_measurement_method       '\w 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  0.0296
_diffrn_reflns_av_unetI/netI     0.0238
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12303
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         2.89
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.271
_exptl_absorpt_correction_T_max  0.902
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.446
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2464
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.340
_refine_diff_density_min         -0.601
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     159
_refine_ls_number_reflns         2432
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      1.009
_refine_ls_R_factor_all          0.0714
_refine_ls_R_factor_gt           0.0543
_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^)+(0.1260P)^2^+10.4802P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1788
_refine_ls_wR_factor_ref         0.2013
_reflns_number_gt                1872
_reflns_number_total             2432
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra09687h2.cif
_cod_data_source_block           co
_cod_original_sg_symbol_Hall     ' -P 4a 2ac '
_cod_original_sg_symbol_H-M      'P 4/n c c'
_cod_database_code               7218418