Mono-, di-, and oligonuclear complexes of Cu(II) ions and p-hydroquinone ligands: syntheses, electrochemical properties, and magnetic behavior.
Margraf, Günter; Kretz, Tonia; Fabrizi de Biani, Fabrizia; Laschi, Franco; Losi, Serena; Zanello, Piero; Bats, Jan W.; Wolf, Bernd; Remović-Langer, Katarina; Lang, Michael; Prokofiev, Andrei; Assmus, Wolf; Lerner, Hans-Wolfram; Wagner, Matthias; Inorganic chemistry 45 (2006) 1277–1288; doi:10.1021/ic051016z

data_4340192
_publ_section_title
;
 Mono-, di-, and oligonuclear complexes of Cu(II) ions and p-hydroquinone
 ligands: syntheses, electrochemical properties, and magnetic behavior.
;
_journal_issue                   3
_journal_name_full               'Inorganic chemistry'
_journal_page_first              1277
_journal_page_last               1288
_journal_paper_doi               10.1021/ic051016z
_journal_volume                  45
_journal_year                    2006
_chemical_formula_sum            'C42 H72 N2 O4 Si2'
_chemical_formula_weight         725.20
_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                104.456(11)
_cell_angle_beta                 100.467(10)
_cell_angle_gamma                99.696(16)
_cell_formula_units_Z            4
_cell_length_a                   11.954(2)
_cell_length_b                   18.217(4)
_cell_length_c                   21.847(3)
_cell_measurement_reflns_used    143
_cell_measurement_temperature    145(2)
_cell_measurement_theta_max      23
_cell_measurement_theta_min      3
_cell_volume                     4414.6(14)
_computing_cell_refinement       'SMART (Siemens, 1995)'
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-96 (Sheldrick, 1996)'
_diffrn_ambient_temperature      145(2)
_diffrn_measured_fraction_theta_full 0.850
_diffrn_measured_fraction_theta_max 0.850
_diffrn_measurement_device_type  SIEMENS_SMART_CCD
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0846
_diffrn_reflns_av_sigmaI/netI    0.0936
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            38047
_diffrn_reflns_theta_full        28.17
_diffrn_reflns_theta_max         28.17
_diffrn_reflns_theta_min         1.75
_diffrn_standards_decay_%        0.0
_diffrn_standards_interval_time  1200
_diffrn_standards_number         533
_exptl_absorpt_coefficient_mu    0.119
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.94
_exptl_absorpt_correction_type   'numerical, SHELXTL (Sheldrick, 1996)'
_exptl_crystal_colour            pale_yellow
_exptl_crystal_density_diffrn    1.091
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1592
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.147
_refine_diff_density_min         -0.699
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.177
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     902
_refine_ls_number_reflns         18405
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.177
_refine_ls_R_factor_all          0.1562
_refine_ls_R_factor_gt           0.0955
_refine_ls_shift/su_max          0.040
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.03P)^2^+10.0P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1820
_refine_ls_wR_factor_ref         0.2167
_reflns_number_gt                11825
_reflns_number_total             18405
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ic051016zsi20050622_041102.cif
_cod_data_source_block           margraf8,_2Si
_cod_original_cell_volume        4414.7(14)
_cod_database_code               4340192